Table of Contents. AMO series quantitative pressured centralized lubricating system 1. Illustration of AMO motor driven lubricating system 1

Transcription

1 Table of Contents AMO series quantitative pressured centralized lubricating system 1 Illustration of AMO motor driven lubricating system 1 AMO motor driven thin oil lubricating pump MO type pressured thin oil quantitative distributor 1 4 System work principle 6 Oil delivery cycle time of the lubricating system 6 Installation of lubricating components 7 Notice to Operation and Debugging Settings and operation of control system of AMO lubricating pump System trouble shooting and diagnosis indication Method of troubleshooting Maintenance Appendix

2 AMO Series Quantitative Pressured Centralized Lubricating System This system consists of AMO motor driven gear pump and MO series thin oil quantitative distributor to form the quantitative pressured centralized lubricating system that the lubricating pump delivers pressure oil to drive piston in the distributor to quantitatively force oil onto each lubricating point. The system has pressure switch that can monitor and control system pressure lost and cutout. This system, according to actual oil consumption of each lubricating point, will select matching distributor and couplings, which can be series or parallel connected, with free installation and convenience, suitable for multi point lubrication, long range piping, overhang piping, precise and intermittent oiling in large and media machinery equipments.. Illustration of AMO motor driven lubricating system MO quantitative distributor Oil outlet way joint Close screw Main oil line 6 1 Pressure gage Filter PV series coupling AMO Series Motor Driven Lubricating Pump 1. AMO motor driven thin oil lubricating pump The AMO lubricating pump consists of gear pump group, pressure regulating valve, auto pressure-release valve, low level switch, pressure switch, and oil tank. The electric control of this product has three types of models: AMO-II-150S, which is PLC control, AMO-III-150S, which uses potentiometer program controller, and AMO-IV-150, which adopts digital display program controller.

3 1 Symbol and Explanation Oil tank 1.8L resin 3L resin 3L metal 4L metal 6L metal 8L metal Installation type Non Resin Metal wall Metal floor Touch-start switch Non No T-S switch Pressure switch Non No Press switch Voltage Oil tank 1.8L resin 3L resin 3L metal 4L metal 6L metal 8L metal Installation type Non Resin Metal wall Metal floor Code Pressure switch Non No Press switch Elect controller Run time s Stop time min Voltage Oil tank 1.8L resin 3L resin 3L metal 4L metal 6L metal 8L metal Installation type Non Resin Metal wall Metal floor Voltage Pressure switch Non No Press switch 2 Specification and Technical Parameter Model Ltem Nominal displaceme Pressure Capacity Elect controller Pressure switch Low Oil Level Signal Switch Voltage (AC)V Motor P W F Hz W Kg Normal Open Normal Open or Normal Close Normal Open or Normal Close Normal Open or Note: a. Selectionof4L,6L,and8L b. input power source: AC220V 10%, AC110V10%.

4 EMG. DIS. INT. RESET DIS.TIME INT. TIME 60 SEC MIN c. Another selection normal close for low oil switch d. Electrical parameters: pressure switch: AC220V/1A, DC24V/2A; low oil level switch: AC36V/0.3A, DC24V/0.2A. 3. Dimensions Manual button Run timing Hole 2-7 Oil inlet Oil outlet pipe diameter 6 Rc1/ Hole Stop timing Inlet H YONGJIA LUBE L Wiring Wiring Oil outlet pipe diameter 6 Rc1/8 Pressure gage Rc1/8 1.8L Resin Oil Tank 3L Resin Oil Tank Oil outlet pipe diameter 6 Rc1/8 2-9 Hole Screen Lamp Setting Inlet 4 Work Principle Resin oil bar Pressure contro switch Wring Pressure regulating valve Auto pressure release valve D Oil level signal switch Pressure gage Rc1/8 3L Steel Oil Tank Note: AMO-II, AMO-III, and AMO-IV have the same dimensions and 4L+ oil tank is special made.

5 4. Performance and Features of AMO Motor Driven Lubricating Pump 4.1 Motor drives the gear pump to deliver oil to all distributors of the system. 4.2 Pressure-regulating valve used to adjust work pressure of the lubricating pump and to return of control overload pressure oil so that to protect the pump safety. 4.3 Pressure switch: within the setup running time, the oil pump controller (or PLC) will collect the pressure switch signal so as to monitor cutout and pressure lost in the lubricating system (no pressure when oil pump discharging, direct flow of distributor, and oil leak in main oil pipe.) 4.4 Auto pressure-release valve: when oil pump stops to work, the pressure-release valve will start automatically to return the pressure oil in the main oil pipe back to oil tank so to make the system release pressure (the piston of distributor restores and starts to measure). 4.5 Circuit breaker: when oil pump is of current overflow, the circuit breaker will cut off source power (tube-shape breaker, AC220V/1A, AC110V/1.5A) so to protect pump safety. 4.6 Over temperature protector: the motor is equipped with built-up temperature protector that will blow off when the motor is over temperature and will automatically switch on when temperature is restored normal, so to secure motor safety. 4.7 Low oil level switch: there is low oil level switch setup in the barrel of the lubricating pump, to monitor low oil level signal output. 2. MO type pressured thin oil quantitative distributor This is type of direct-pressured distributor, which has displacement of 0.05~0.5ml/stroke, with five specifications that can be selected according to necessary quantity of each lubricating point. 2.1 Specifications and technical parameters Model Item Series No Symbol Nominal Displacement ml/cy Pressure Mpa Restore Pressure MPa Oil outlet pipe 4

6 2.2 Working principle of MO type pressured quantitative distributor Distributor period Oil pump run Stup Pump stqaurt run Pressure up Pressuring Piston to upmost Pressure end Pump stop System pressure down Piston restore Action finish Pressuring Oil store chamber (upper) Filling chamber (low chamber) Discharging Filling Finish Finish Measuring 1. Discharge tank End measuring 2. In filling and discharging 3. End of filling and discharging 4. In measuring (system de-pressure, Piston restored) The pressured lubricating oil, coming from oil pump, will flow into the distributor to force the miter valve in the distributor to push up. When the miter valve blocks the center hole of valve stem, the pressure oil will, putting up with spring force, gradually push the piston up and at the same time gradually discharge the oil stored in upper chamber. When pressure oil gradually pushing the piston to the end point in the upper chamber, the oil stored last time in the upper chamber is also completely discharged, and the system pressure goes up gradually to rated work pressure. When oil pump stops delivery oil, the pressure-release valve will automatically open so to return the pressure oil through pressure-release valve, and the system pressure drops down at this time, and the piston, under the pressure of spring, will restore. When the miter valve restores to block the oil inlet of the distributor, then the piston will push oil in the lower chamber through the hole of the valve stem to the upper chamber, measuring and preparing for next oil delivery.

7 3. System Work Principle Oil pump starts and main oil line gradually pressure up deliver oil to distributor pressure oil in lower chamber of the distributor will gradually, overcoming the force of spring, push the piston up, and at the same time gradually discharge (exhaust) the quantitative oil last time measured and stored in the upper chamber pistons of all distributors in the system go to its end point that the charge and discharge of oil complete. Oil pump work pressure then goes up to 2.0MPa (if oil pump continue to work, the pressure oil will return to oil tank through the pressureregulating valve.) the oil pump stops work oil pump pressure-release valve automatically opens pressure oil in main oil line will return and pressure reduce gradually, the distributor piston, with the force of spring, will begin to restore. And when the miter valve blocks the oil inlet of the distributor, the oil stored in the lower chamber will be pressed, through hole of the valve stem, into the upper chamber the system pressure will reduce to 0.5MPa or to zero position and piston restores to its original, the distributor finishes measuring and at the same time completes its oil storage preparing oil delivery for next cycle. Note: within the system oil delivery cycle time, the MO type distributor can only act once, that is, to deliver oil to each lubricating point once time. 4. Oil Delivery Cycle Time of the Lubricating System The oil delivery cycle time (the time between the lubricating pump starts and stops running) is decided according to the necessary oil quantity on each lubricating point. Please refer to AMO centralized thin oil lubricating system for selection and calculation. If no calculation, the following method is suggested to use (during the debugging of the lubricating system). 4.1 The determination of the run time of the lubricating system (system oil deliver time): oil pump starts to run and the system pressure gradually goes up, and when system pressure is up to 2MPa and keeps for 5-10 seconds, which is the time the system needs for oil delivery. 4.2 The determination of the least stop time of the system: the oil pump stops work and pressure on the gage reduce to zero and keeps for 2min, which is the least stop time for the system oil pump. If the run time is set up too long, then when the distributor completes discharge of oil, the system pressure will rise to 2.0MPa and then the redundant pressure oil will return through the pressure-regulating valve. If the run time is set up too short, then the system pressure cannot be established and the lubricating system will be in abnormal working state (system pressure lost). Therefore, only reasonable system oil deliver time and stop time can guarantee normal working of the lubricating system and full lubricating of each lubrication point. Note: this oil pump motor is only suitable for intermittent operation, so long time continuous running or too short of intermittent stop time will lead damage to oil pump motor. Care must be taken when setting up the oil pump running time that the longest continuous running time shall not exceed than 2min and that the shortest intermittent stop time shall not be less than 2min.

8 5. Installation of lubricating Components 5.1 Installation of oil pump, distributor, and couplings: The lubricating pump shall be setup steady and vertically in place that has less environmental contamination and place that is easy for oiling and maintenance and viewing. Work temperature: -20 ~ The lubricating pump shall be installed in the center of the system so as to make system piping as shot as possible to spare piping and reduce system pressure lost Filter is generally installed between pump and the first set of couplings The distributor and couplings shall be installed in place that is easy for installation, operation, maintenance, and observation (can be integrate, horizontal, or reversal installed) Selection of system oil pipe: the main oil line shall use 61 nylon pipe, copper pipe or bright copper pipe (nitrogen protected anneal copper pipe); the moving portion shall use rubber hose with protecting shield; manifold pipe shall use 4 steel tube, copper pipe, lead tube or nylon pipe (main oil line refers to connection between pump and couplings, and the manifold oil line refers to connections between distributors and lubricating points.) 5.2 Piping installation of the lubricating system: Layout and configuration of main oil line and manifold piping shall be short and compact so to avoid too many turns (if turning, no fold or flat allowed. The least turning radius shall be 10D), so as to reduce system pressure lost and to ensure smooth flow Shield rubber hose or nylon tube shall be slightly loosen when used in straight line. If the moving portion shall be turned then it must be larger than specified value. And the hose shall not be over distorted The oil pipe should be cut into right angle by using pipe cutter. Not to make the pipe end cracked or scratched, not even make it squashed or broken off It is required that, before assembling of the pipes, all chips and dirt in or outside the pipe must be removed and keep the pipes clean All pipes and tubes must be fixed with clips to prevent vibration. The locking methods of sleeve joints Bush the joint onto the oil pipe, and then put on the double tapered cutting sleeve (if nylon, then put the tube sleeve into inner wall of the nylon pipe). The end of pipe should exceed 2~3mm out of the sleeve. Put it into the joint and tighten it when the pipe end is close to the upper of the joint. Oil pipe Pipe joint Double-tapered cutting sleeve Pipe joint Bush Double-tapered cutting sleeve Nylon tube Sample of oil pipe joint Sample of nylon tube joint

9 6. Notice to Operation and Debugging 6.1 The power connection must be tightened and in good condition to ensure security. 6.2 The rated work pressure for the lubricating pump is 2.0MPa (factory set: 2.0MPa) and it does not allow adjusting the pressure-regulating vale without permission. 6.3 The viscosity of the medium oil: for cSt, please refer to appendix table. It is suggested that use N32# guide way oil or mechanical oil for temperature below 0, N32#~N100# guide way oil or mechanical oil for temperature 1 ~20, and N100#~N200# guide way oil or mechanical oil for temperature above 21. Guide way oil: GB/Y Mechanical oil: GB/ It is strictly forbid to use lubricating oil containing water and abrasive (the lubricating oil containing water will lead damage and trouble to the system lubricating units because of component rusty if the system is idle for long time. And it is easy for oil containing abrasive to block the system filter. ) 6.4 For initial starting: start the oil pump and full fill the main pipe loose the closing screw of the end joint in the system drain the oil from the hole of the screw (to exhaust the bubble and foreign matters) check to see if there is bubble in the oil discharged, restore and tighten the screw the system pressure rises up to 2MPa (on the gauge), and keeps for 5~10seconds cut off the power and the pump stops the system pressure drops to 0 level then start the pump again to deliver oil the pump work pressure goes up to 2MPa observe each distributor, and connect the distributor to the bypass tube and tighten the joint when oil discharge is normal conduct the operation for several times to make all the bypass tubes drain oil, no bubble in the oil connect each lubricating point set the delivery cycle time for automatic oil supplying (refer to Article 4 ) 6.5 Check to ensure there is no leakage at each connection. Tighten if there is leakage (look or touch each connection with finger). Note: a. If there is leakage at the joint between the main pipes, then the system pressure cannot be built up and therefore, to lead the distributor not smoothly discharge or not discharge at all. b. If there is leakage at the joint between distributor and the manifold, the air will penetrate into the tube so to lead leakage of lubricating oil from manifold. 6.6 No low level operation allowed, avoiding oil pump trouble or bubble in the oil discharged. Immediately add the specified oil when the low oil level switch sending signal. 7. Settings And Operation Of Control System Of AMO Lubricating Pump For determination of the lubricating system oil delivery cycle, the pump running time and stop time, please refer to Article AMO-II-150S series lubricating pump consists of master PLC control, which are two types of with touch-start button and without touch-start button.

10 7.1.1 Illustration of Power connection (there is wiring diagram with symbols on the inside of the cover). Must have ground wiring. PLC control relay contact point Level switch Pressure switch Power Level switch Pressure switch Push button Touch-start switch Wiring diagram with touch start button Wiring diagram without touch start button Lubricating pump with touch-start button can immediately deliver oil when the button is pressed Low oil level signal switch is normal open type, with contact point capacity of AC36V/0.3AAND DC24V/O.2A Low voltage switch is normal open, with contact point capacity of A220V/1A and DC24V/2A. 7.2 Usage and debugging of potentiometer controller of AMO-III-150S series lubricating pump: Illustration of Power connection of AM-III-150S (there is wiring diagram with symbols on the inside of the cover). Must have ground wiring.

11 Power Abnormal output Red abnormal display EMG Green running display DIS Yellow stop display INT EMG. DIS. RESET DIS.TIME 90 SEC MIN 120 Manual reset button RESET Run timing adjust button DIS.TIME Stop timing adjust button INT.TIME INT. INT. TIME Abnormal output contact capacity AC110V 0.5A AC220V 0.2A Controller layout of the AMO-III-150S series lubricating pump (see the Fig.) (Settings of running time and stop time can be adjusted shown as the scale dial. The scale value on the dial of the nameplate is approximation for reference, which shall be modified in accordance with actual adjustment Range of controller oil delivery cycle time: a. Regulating button for run time: DIS.TIME (range: 2~90s) b. Regulating button for stop time: INT.TIME (range: 10~120min) (range: 2~30min) Oil delivery cycle time setting please refer to Article 4/ The work sequence for the pump When finishing setting of oil delivery period, and power-on, the pump will go into operation, and the green 'Run Timing' DIS will be on, indicating oil supplying is on. After the end of 'Run Timing', the pump stops working and then switches to the state of 'stop timing'. The DIS light is off, and then the yellow light INT is on. 'Stop Timing' is over. And the pump will switch to the next delivery cycle The manual RESET button is the oil delivery cycle time setting and modification of setting and manual oil delivery and troubleshooting confirm button Setting of oil delivery period: according to the oil delivery period of the lubricating system, put the Run Timing and Stop Timing buttons arrows to the scale on the nameplate and then press RESET button to conform After modification of lubricating system oil delivery period, press RESET button to conform When the oil pump is in the Stop Timing period, if need to switch to Run Timing, just press the Run Timing button once EMG red lamp indicates abnormal press it once after troubleshooting EMG red lamp indication, pressure switch or oil level switch sending warning (trouble and troubleshooting, see 8.3.2) The oil delivery period is over but the pressure switch (normal closed) has no reaction and the controller has no collection signal, then the EMG red abnormal indication lamp will light.

12 Low oil level switch sending signal (normal open) and the controller collects signal, EMG red abnormal indication lamp lights If the controller collects signals from low level switch or pressure switch, EMG red abnormal indication lamp lights. Then must be troubleshooting. 7.3 Usage and debugging of digital controller of AMO-IV-150S series lubricating pump AMO-IV-150S wiring diagram (there is wiring diagram with symbols on the inside of the cover). Must have ground wiring. Power Abnormal output Run Power green lamp green lamp Display screen Stop yellow lamp key Fault red lamp SET key RESET/MANUAL key key Abnormal output contact capacity AC110V 0.5A AC220V 0.2A Nameplate layout of controller of AMO-IV-150S series lubricating pump (as shown in the fig.) Rang of oil delivery period of the controller: run time: 0~999s, stop time: 2~999min Please refer to Article 4 for setting of oil delivery period Oil pump normal working sequence After power on, the green 'Power' indication lamp lights and the oil pump goes to run state and then the green 'Run' indication lamp lights, indicating oil delivery is on. When the Run Timing is finished, the oil pump will automatically switch to Stop Timing and the green 'Run' indication lamp will be off. The yellow 'Stop Time' lamp will be on. Switching between 'Run' and 'stop' time setting For first start, after power on, you must first set up the oil delivery period (the run time and stop time) in accordance with technical requirements Setting of run time and stop time for the oil delivery period: 'Set' time setting conformation key: Setting method of run time: press 'Set' key for five seconds and then it will go to state of run time setting and the 'RUN' indication lamp is on, and the unit's digit cell on the screen will be twinkling. Press ' ' to increase or press ' ' to move the twinkling digit to left, to successively set up the unit's place, ten' s place, and hundred's place of the RUN TIMIGN value. And press 'SET' key to confirm to come to STOP TIME setting mode Setting method of STOP TIME: after setting of RUN TIME it will come into

13 state of STOP TIME setting. At this time the 'STOP' time lamp is on, and the unit's digit cell on the screen will be twinkling, Press ' ' to increase the digits or press ' ' to move the twinkling digit to left, to successively set up the unit's place, ten' s place, and hundred's place of the STOP TIMIGN value. And press 'SET' key after setting to confirm to come to normal work state to run in set sequence Indication of abnormal state (trouble causes and troubleshooting, please refer to 8.3.3: low oil level switch (normal open) sending signal, the red 'FAULT' abnormal indication lamp is twinkling, and abnormal output contact switches, buzzer sounding, digital cell displaying 'ERO', controller is in abnormal state, system cannot conduct normal cycle work Oil delivery period ends, but pressure switch does not react, controller collects no signal, the red 'FAULT' abnormal indication lamp is twinkling, and abnormal output contact switches, buzzer sounding, digital cell displaying 'ERO', controller is in abnormal state, system cannot conduct normal cycle work Controller collects signal from low oil level switch or no signal collection from pressure switch: the red 'FAULT' abnormal indication lamp is twinkling and buzzer sounding, digital cell displaying 'ERO' or 'ERL', then you must check and make troubleshooting 'RESET/MANUAL', confirm key after troubleshooting and manual oil delivery key Press 'RESET/MANUAL' to confirm after troubleshooting, then the controller will come into normal controlling state of oil delivery period Press 'RESET/MANUAL' key can make manual oil delivery and at the screen time the screen will display manual oil delivery time. Release the key to come into the normal sequence control state. 8. System trouble shooting and diagnosis indication 8.1 Pressure switch is the protecting component for testing the work state of the lubricating system Within the set run time of lubricating pump, if the pressure switch acts, then the system will establish its pressure and the lubricating system will be in normal working state Within the set run time of lubricating pump, if the pressure switch does not act, then the system cannot establish its pressure and the lubricating system will be in abnormal working state. (System lubricating cutout or system pressure lost) 8.2 Check of abnormal working state (system trouble) of the lubricating system To check and confirm run time set for lubricating pump To check oil leak or seep between the connections of system main pipe couplings To check the lubricating pump, screw off the joint of the 3-way oil outlet of the pressure gage. Use screw plug to block the outlet (R1/8 or M10x1)

14 A. If pressure gage displays 2MPa, then it shows normal oil delivery of oil pump. B. If no pressure, then the oil pump check valve or pressure-regulating valve is blocked by dirt and need to be clean Trouble in distributor: the distributor is of malfunction and discharges oil without measuring (continuous seeping) 8.3 System trouble and troubleshooting AMO-II-150S model (master PLC control) Problems Causes Remedies Wiring error or power off Check circuit and make troubleshooting Motor does not work System no establish of pressure, and when low oil level, pressure switch or low level switch no signal collection System cannot establish pressure within setup run time (pressure switch no action) Too long pressure release of the system Within setup run time system establishes pressure but the distributor does not discharge or the displacement is not precise Noise of oil pump Over current and circuit breaker blow off Motor built-in heat protector cutoff Motor damaged because of overload. Switch wiring error or cutoff Damage of pressure switch Damage of low oil signal switch Oil pump setup run time too short Leak at main oil pipe connection or pipe damage Dirt block on the seal surface of oil pump pressure-release valve or pressure-regulating valve. Error setting of pressure-regulating valve Oil used not with technical specification Low oil level operation and air into the system Malfunction or direct oil discharge of the distributor Dirt block in filter Dirt block in pressure-release valve Main oil line squashed or blocked Dirt block in distributor, malfunction Setting of pressure-release time (stop time) is not precise. Block of oil pump suction screen Check circuit and replace breaker (AC220V/1A, AC110V/1.5A) Setting of run time out of specified range, readjust the run time Replace motor. Check circuit and make troubleshooting Check and replace pressure switch Replace low oil signal switch Refer to article 4 and resetting Refer to 6.5 to check and troubleshooting or replace Make troubleshooting, refer to article 9 Replace with specified oil, refer to 6.3 Screw off the close screw to exhaust bubble, refer to Article 6.6 and 6.4 Refer to 9.2, wash the miter valve and O ring, and replace them if damaged Wash or replace valve stem Troubleshooting, refer to Check and troubleshooting or replace if damaged Refer to 9.2, check and wash the miter vale and inner hole of valve stem, and replace it if the miter valve damaged. Refer to Article 4 for resetting Check and wash filter screen and replace the gear pump if damaged.

15 3.2 AMO-III-150S (potentiometer controller) Problems Causes Remedies Wiring error or power off Check circuit and make troubleshooting Power on, but the 'DIS', 'INT' indication lamps no display, or motor not run System no establish of pressure, and when low oil level, 'EMG' abnormal lamp no display System cannot establish pressure within setup run time (pressure switch no action), but 'EMG' abnormal lamp displays Too long pressure release of the system Within setup run time system establishes pressure but the distributor does not discharge or the displacement is not precise Noise of oil pump Over current and circuit breaker blow off Motor built-in heat protector cutoff Motor damaged because of overload Connection loose and open circuit Damage of low oil level signal switch Damage of pressure switch Too short setting of oil pump run time Leak at main oil pipe connection or pipe damage Dirt block on the seal surface of oil pump pressure-release valve or pressure-regulating valve. Error setting of pressure-regulating valve Not use specified oil with technical requirement Low oil level operation and air into the system Malfunction of distributor and direct discharge Damage of gear pump Dirt block in filter Dirt block in pressure-release valve Main oil line squashed or blocked Dirt block in distributor, malfunction Setting of pressure-release time (stop time) is not precise. Block of oil pump suction screen Check circuit and replace breaker (AC220V/1A, AC110V/1.5A) Setting of run time out of specified range, readjust the run time Replace motor. Check and make troubleshooting Check and replace Check and replace Refer to Article 4 for resetting Refer to 6.5 to check and troubleshooting or replace Refer to Article 9 to check and troubleshooting Replace with specified oil, refer to 6.3 Screw off the close screw to exhaust bubble, refer to Article 6.6 and 6.4 Refer to 9.2, check and wash the miter vale and inner hole of valve stem, and replace it if the miter valve damaged. Replace gear pump Wash or replace valve stem Troubleshooting, refer to Check and troubleshooting or replace if damaged Refer to 9.2, check and wash the miter vale and inner hole of valve stem, and replace it if the miter valve damaged. Refer to Article 4 for resetting Check and wash filter screen and replace the gear pump if damaged.

16 3.3 AMO-IV-150S (digital display controller control) Problems Power on, but the indication lamps no display, or motor not run No establishment of system pressure andwheninlowoil level red 'FAULT' abnormal indication lamp no display System cannot establish pressure within setup run time (pressure switch no action), but red 'FAULT' abnormal indication lamp displays Too long pressure release of the system Within setup run time system establishes pressure but the distributor does not discharge or the displacement is not precise Noise of oil pump Causes Wiring error or power off Over current and circuit breaker blow of Motor built-in heat protector cutoff Motor damaged because of overload. Connection loose and open circuit Damage of low oil level signal switch Damage of pressure switch Setting of oil pump run time is too short Leak at main oil pipe connection or pipe damage Dirt block on the seal surface of oil pump pressure-release valve or pressure-regulating valve. Error setting of pressure-regulating valve Oil used not within technical specification Low oil level operation and air into the system Damage of gear pump Malfunction or direct oil discharge of the distributor Dirt block in filter Dirt block in pressure-release valve Main oil line squashed or blocked Dirt block in distributor, malfunction Setting of pressure-release time (stop time) is not precise. Block of oil pump suction screen Remedies Check circuit and make troubleshooting Check circuit and replace breaker (AC220V/1A, AC110V/1.5A) Setting of run time out of specified range, readjust the run time Replace motor. Check and make troubleshooting Check and replace Check and replace Resetting, refer to Article 4 Refer to 6.5 to check and troubleshooting or replace Make troubleshooting, refer to article 9 Replace with specified oil, refer to 6.3 Screw off the close screw to exhaust bubble, refer to Article 6.6 and 6.4 Replace gear pump Refer to 9.2, wash the miter valve and O ring, and replace them if damaged Wash or replace valve stem Troubleshooting, refer to Check and troubleshooting or replace if damaged Refer to 9.2, check and wash the miter vale and inner hole of valve stem, and replace it if the miter valve damaged. Refer to Article 4 for resetting Check and wash filter screen and replace the gear pump if damaged.

17 9. Method of troubleshooting 9.1 Troubleshooting of lubricating pump Pressure regulating valve: the preset pressure for the pressure valve does not reach up to 2MPa. Block the outlet at the pump with R1/8 screw plug. Connect the power and let the pump run (as shown in the diagram) demount the lock screw and adjust the pressure. If pressure will not rise, then it must be that the sealing of the steel ball is suck by dirt. Demount and wash it and reinstall it to original place, and adjust it again Washing of the pressure-release valve: if the pressure-release valve is blocked by dirt, then, take off the spring, the bevel valve, and O-ring; wash them and the oil passage. Restore all the parts after. 9.2 Troubleshooting of distributor Pressure-release valve Regulating valve Fasten screw Gear pump Suction screen release vale:spring,miter vale,o-ring, square washer,release screw regulating vale:steel ball,spring, regulating screw,fasten screw Washing the MO distributor: screw off part G, and take out parts F, E, D, C, and B in sequence and then wash them with kerosene. If the bevel valve B is damaged, then replace it and restore to its original. (When turning part F, take care not to let the spring E come out, and not to lose the other parts, so as to cause problem in later assembling.) Distributor parts A body B miter valve COring D stem E stem sleeve F spring G fix joint P arts of MO Distributor

18 10. Maintenance 10.1 Strictly observe to the instructions described the operation manual and no violation allowed so to avoid trouble to the lubricating system Regularly check the electric components of the lubricating system (work condition of oil level switch and pressure switch) and the seal condition between pipe joints (oil leak or seep on the pipe joints). If abnormal or trouble condition found, make immediate troubleshooting with reference of operation manual When low oil level signal switch sending signal, please add oil immediately. No operation allowed when tank oil level is lower than the low level symbol 'L', so to avoid damage of the pump components or air into the oil line to cause trouble to the lubricating system It is not allowed to take out the screen in the oil-inlet when filling oil, to avoid trouble caused by foreign matters falling into the lubricating system Regularly wash the suction screen in the lubricating pump and the F-3D filter core of the system (at least once a year). Replace if there are damages to filter core and screen.

19 Appendix TableComparison Of Lubricating Oil Viscosity To Temperature (Unit: Cst) TEMP.