THE IMPORTANCE OF AN EFFICIENT FILTRATION

Transcription

1 In line high pressure filters HF 745 / HF 748 series

2 THE IMPORTANCE OF AN EFFICIENT FILTRATION The main cause of anomalies in hydraulic systems has to be attributed to the presence of contaminants in the fluid. The nature of the contaminant may be: gaseous, namely air mixed with the fluid; fluid, it depends on water penetrating the fluid; solid, therefore particles of various origins and dimensions. Customers who operate equipments are always focused on obtaining the best possible performance, lower energy consumptions and greater respect for the environment. These characteristics can be attained by using top quality components in the hydraulic system for generating and regulating the fluid power, which are also more sensitive to the presence of contaminants in the fluid. Starting from these requirements, we understand how important and fundamental it is to prevent the presence of air and water from mixing in the fluid tank by using dedicated solutions. It is also crucial to limit the presence of solid particles in the hydraulic circuit through a suitable filtering system, which is indispensable to maintain the project requirements of the system over time and to keep running costs low. The correct choice of a filter and its optimum position in the hydraulic system requires the same care and experience needed to choose all the other components. The use of filters with larger filtering surfaces reduces, at equal flow rates, the superficial contaminant load and therefore the filter's life is extended proportionally. To maintain the maximum efficiency of the system, the filters must have a clogging indicator showing the differential pressure on the filtering cartridge and to iediately point out when the cartridge needs replacing in order to prevent the by-pass valve from opening. The following factors should be analysed when choosing the ideal filter: The filtration degree required to protect the most sensitive component from contamination The points of the circuit in which the filters have to be installed The working pressure of the system The maximum flow rate and the type of fluid to be filtered The duty cycle The retention efficiency of the filtering cartridge The contaminant accumulation capacity of the filtering cartridge The working ambient temperature Each filter used generates a pressure drop that increases continuously as time goes by. This pressure drop represents an efficiency index of the filter itself. When the hydraulic system is about to be assembled, all the components must be perfectly clean and the fluid has to be added through a device complete with a filter. During the test phase, it is advisable to run some work cycles at low pressure in order to create the best possible conditions for all the components.

3 TECHNICAL CHARACTERISTICS The filters of the HF745 / HF748 series are connected to the pressure line of the circuit and protect the system s components against contaminant particles. The standard filters are supplied with by-pass valve calibrated at 87 psi (6 bar). For applications which need maximum protection of the system, such as servo drives or proportional controls, the filters are equipped with highly resistant filtering elements (versions HC ) and do not have a by-pass valve. Flow up to 58 US gpm (22 l/min) Maximum working pressure 4496 psi (31 bar) High efficiency multilayer system Low pressure drop MATERIALS Head Bowl Seals End cap Inner tube Filter media Spheroidal cast iron GS 45-1 UNI ISO 183 Steel Buna - Viton Zinc plated steel Zinc plated steel Inorganic micro-fibre glass OPERATING TEMPERATURE With Buna seals F (-3 9 C) With Viton seals F (-2 11 C) ENDURANCE STRENGTH 1.. cycle 4496 psi ( 31 bar) FLUID COMPATIBILITY Conforming to ISO 2943 (Norm ISO 6743/4) Oil mineral HH - HL - HM - HR - HV - HG Water emulsion HFAE - HFAS Water glycol HFC Syntetic fluid HS - HFDR - HFDU - HFDS With Buna seals With Viton seals FLOW Flow max. 45 US gpm (17 l/min) PRESSURE Working pressure 4496 psi (31 bar) Testing pressure 6744 psi (465 bar) Burst pressure 8992 psi (62 bar) Element collapse pressure rating (conforming to ISO 2941) 29 psi (2 bar) (version LC) 345 psi (21 bar) (version HC) BY-PASS VALVE By-pass setting 87 psi (6 bar) DEGREE OF FILTRATION Multi-pass test conforming to ISO (regulation in force) Contaminant ISO MTD - final p 87psi(6bar) Code Degree of filtration Ratio ß x(c) Percentage of efficiency FG3 5 m ß 5(c) 2 99,5 % FG6 7 m ß 7(c) 2 99,5 % FG1 1 m ß 1(c) 2 99,5 % FG25 21 m ß 21(c) 2 99,5 % Multi-pass test conforming to ISO 4572 (previous regulation) Contaminant ACFTD - final p 87psi(6bar) Code Degree of filtration Ratio ß x Percentage of efficiency FG3 3 m ß ,5 % FG6 6 m ß ,5 % FG1 1 m ß ,5 % FG25 25 m ß ,5 % INDICATORS (3) Visual differential indicator Visual electrical differential indicator Visual electrical differential indicator with thermostat (3) Characteristics and dimensions pag. 14 ICAT

4 SIZING PRESSURE DROP The total pressure drop of the filter is calculated by suing the pressure drop value in the housing to the one in the filtering element. Total p p in housing + p in element In filters of series HF 745 in normal working conditions, the total p must not be more than 11 psi (,75 bar) whereas, for use in harsh conditions, it must be within psi (1 1,5 bar). To establish the values of pressure drop involved, the following pages provide some diagrams with curves referred to the use of mineral oils ISO VG46 with kinematic viscosity of 12 SSU (3 cst) and density of 7.29 lb/gal (,856 kg/dm 3 ). Calculation example Filter HF AS-FG1-LC-B6-GD-B-DD-G Flow rate= 12 US gpm (45 l/min) Kinematic viscosity: 12 SSU (3 cst) Oil density : 7.29 lb/gal (,856 kg/dm 3 ) Filtering degree: 1 m Data obtained from the diagrams: p in housing = 2. psi (,14 bar) (page 4) p in element = 7.25 psi (,5 bar) (page 5) Total p = = 9.25 psi (,64 bar) ( p is lower than maximum value admitted therefore sizing is correct). If oil with different kinematic viscosity and different density is used, the values obtained from the diagrams will be re-calculated considering the following indications: 1) The pressure drop of the housing is proportional with the oil density, therefore for oil with density different to 7.29 lb/gal (,856 kg/dm 3 ) the value of the p in the head-bowl will be: p in housing = Or p in housing = p of diagram (psi) Oil density ( lb/gal) 7.29 (lb/gal) p of diagram (bar) Oil density ( kg/dm 3 ),856 (kg/dm 3 ) [psi] [bar] 2) The pressure drop of the element is proportional with the oil density and kinematic viscosity, therefore for oil with density different to 7.29 lb/gal (,856 kg/dm 3 ) and kinematic viscosity different to 12 SSU (3 cst) the value of p in the element will be: p element = p of diagram (psi) Or p element = p of diagram (bar) Oil density (lb/gal) Oil viscosity (SSU) 7.29 (lb/gal) 12 (SSU) Oil density (kg/dm 3 ) Oil viscosity (cst),856 (kg/dm 3 ) 3 (cst) Now you sum the values of the pressure drop of the housing to the value of the pressure drop of the filtering element, always making sure the total p does not exceed the pressure limit of 11 psi (,75 bar). [psi] [bar] 2 2 ICAT18-2

5 PRESSURE DROP CURVES THROUGH THE BY-PASS VALVES The pressure drop values are directly proportional with the specific weight of the fluid and do not affect the establishment of the total pressure drop of the complete filter. The curves are obtained in the following conditions: Mineral oil type ISO VG46 Kinematic viscosity 12 SSU (3 cst) Density 7.29 lb/gal (,856 kg/dm 3 ). HF 745 / HF748-2 HF , (217.5) 15, (217.5) 12, (174.5) 12, (174.5) 9, (13.53) 9, (13.53) 6, (87.2) 6, (87.2) 3, (43.51) 3, (43.51) 1 (2.6) 2 3 (7.9) 4 (1.6) (13.2) (15.9) (18.5) (21.1) (23.8) (26.4) 2 4 (1.6) 6 (15.9) 8 (21.1) 1 (26.4) 12 (31.7) 14 (37.) 16 (42.3) ICAT

6 PRESSURE DROP CURVES THROUGH THE HOUSING The curves are obtained in the following conditions: Mineral oil type ISO VG46 Kinematic viscosity 12 SSU (3 cst) Density 7.29 lb/gal (,856 kg/dm 3 ). G 1/2 G 3/4 (3)G1 HF 745 / HF HF , (14.5) 1, (14.5),8 (11.6),8 (11.6),6 (8.7),6 (8.7),4 (5.8),4 (5.8) (3),2 (2.9),2 (2.9) 2 4 (1.6) 6 (15.9) 8 (21.1) 1 (26.4) 12 (31.7) 14 (37.) 16 (42.3) (1.6) (15.9) (21.1) (26.4) (31.7) (37.) (42.3) (47.6) (52.8) 4 2 ICAT18-2

7 HF 745 PRESSURE DROP CURVES THROUGH THE ELEMENT HEK85-2 The curves are obtained in the following conditions: Mineral oil type ISO VG46 Kinematic viscosity 12 SSU (3 cst) Density 7.29 lb/gal (,856 kg/dm 3 ). HEK HEK (3) HEK FG3 FG6 3, (43.5) (3) 3, (43.5) 2,5 (36.25) 2,5 (36.25) 2, (29.) 2, (29.) (3) 1,5 (21.75) 1,5 (21.75) 1, (14.5) 1, (14.5),5 (7.25),5 (7.25) 2 4 (1.6) 6 (15.9) 8 (21.1) 1 (26.4) 12 (31.7) 14 (37.) 16 (42.3) 2 4 (1.6) 6 (15.9) 8 (21.1) 1 (26.4) 12 (31.7) 14 (37.) 16 (42.3) FG1 FG25 3, (43.5) 3, (43.5) 2,5 (36.25) 2,5 (36.25) 2, (29.) 2, (29.) 1,5 (21.75) 1, (14.5) (3) 1,5 (21.75) 1, (14.5) (3),5 (7.25),5 (7.25) 2 4 (1.6) 6 (15.9) 8 (21.1) 1 (26.4) 12 (31.7) 14 (37.) 16 (42.3) 2 4 (1.6) 6 (15.9) 8 (21.1) 1 (26.4) 12 (31.7) 14 (37.) 16 (42.3) ICAT

8 HF 745 PRESSURE DROP CURVES THROUGH THE ELEMENT HEK85-3 The curves are obtained in the following conditions: Mineral oil type ISO VG46 Kinematic viscosity 12 SSU (3 cst) Density 7.29 lb/gal (,856 kg/dm 3 ). HEK HEK FG3 FG6 3, (43.5) 3, (43.5) 2,5 (36.25) 2,5 (36.25) 2, (29.) 2, (29.) 1,5 (21.75) 1,5 (21.75) 1, (14.5) 1, (14.5),5 (7.25),5 (7.25) (1.6) (15.9) (21.1) (26.4) (31.7) (37.) (42.3) (47.6) (52.8) (1.6) (15.9) (21.1) (26.4) (31.7) (37.) (42.3) (47.6) (52.8) FG1 FG25 3, (43.5) 3, (43.5) 2,5 (36.25) 2,5 (36.25) 2, (29.) 2, (29.) 1,5 (21.75) 1, (14.5) 1,5 (21.75) 1, (14.5),5 (7.25),5 (7.25) (1.6) (15.9) (21.1) (26.4) (31.7) (37.) (42.3) (47.6) (52.8) (1.6) (15.9) (21.1) (26.4) (31.7) (37.) (42.3) (47.6) (52.8) 6 2 ICAT18-2

9 PRESSURE DROP CURVES THROUGH THE ELEMENT HEK86-2 The curves are obtained in the following conditions: Mineral oil type ISO VG46 Kinematic viscosity 12 SSU (3 cst) Density 7.29 lb/gal (,856 kg/dm 3 ). HEK HEK (3) HEK (4) HEK FG3 FG6 6, (87.) 6, (87.) 5, (72.5) 5, (72.5) 4, (58.) 4, (58.) 3, (43.5) (3) 3, (43.5) (3) 2, (29.) (4) 2, (29.) 1, (14.5) 1, (14.5) (4) 2 4 (1.6) 6 (15.9) 8 (21.1) 1 (26.4) 12 (31.7) 14 (37.) 16 (42.3) 2 4 (1.6) 6 (15.9) 8 (21.1) 1 (26.4) 12 (31.7) 14 (37.) 16 (42.3) FG1 FG25 6, (87.) 6, (87.) 5, (72.5) 5, (72.5) 4, (58.) 4, (58.) 3, (43.5) 2, (29.) (3) 3, (43.5) 2, (29.) 1, (14.5) (4) 1, (14.5) (3) (4) 2 4 (1.6) 6 (15.9) 8 (21.1) 1 (26.4) 12 (31.7) 14 (37.) 16 (42.3) 2 4 (1.6) 6 (15.9) 8 (21.1) 1 (26.4) 12 (31.7) 14 (37.) 16 (42.3) ICAT

10 FLOW Filter type GAS (BSPP) Degree of filtration Ports IN/OUT Flow US gpm (l/min) p= 11 psi (.75 bar) Flow US gpm (l/min) p= 21.8 psi (1.5 bar) NPT SAE J514b FG3 FG6 FG1 FG25 FG3 FG6 FG1 FG25 HF G 1/2 1/2 NPT 3/4-16 UNF-2B G 3/4 3/4 NPT 1 1/16-12 UN-2B 6.6 (25) 6.6 (25) 7.9 (3) 7.9 (3) 9.2 (35) 9.2 (35) 11.9 (45) 11.9 (45) 9.2 (35) 1.6 (4) 11.9 (45) 11.9 (45) 14.5 (55) 14.5 (55) 17.2 (65) 17.2 (65) HF G 1/2 1/2 NPT 3/4-16 UNF-2B G 3/4 3/4 NPT 1 1/16-12 UN-2B 9.2 (35) 9.2 (35) 1.6 (4) 1.6 (4) 13.2 (5) 13.2 (5) 15.9 (6) 15.9 (6) 13.2 (5) 14.5 (55) 14.5 (55) 15.9 (6) 18.5 (7) 19.8 (75) 22.5 (85) 22.5 (85) HF G 1/2 1/2 NPT 3/4-16 UNF-2B 15.9 (6) G 3/4 3/4 NPT 1 1/16-12 UN-2B 17.2 (65) 17.2 (65) 18.5 (7) 19.8 (75) 21.1 (8) 22.5 (85) 25.1 (95) 22.5 (85) 25.1 (95) 25.1 (95) 27.7 (15) 29.1 (11) 3.4 (115) 31.7 (12) 34.3 (13) HF G 3/4 3/4 NPT 1 1/16-12 UN-2B 15.9 (6) G 1 1 NPT 1 5/16-12 UN-2B 15.9 (6) 17.2 (65) 18.5 (7) 21.1 (8) 22.5 (85) (15) 21.1 (8) 21.1 (8) 23.8 (9) 23.8 (9) 29.1 (11) 29.1 (11) 34.3 (13) 37. (14) HF G 3/4 3/4 NPT 1 1/16-12 UN-2B 27.7 (15) G 1 1 NPT 1 5/16-12 UN-2B 29.1 (11) 31.7 (12) 33. (125) 35.7 (135) 38.3 (145) 4.9 (155) 44.9 (17) 39.6 (15) 39.6 (15) 44.9 (17) 44.9 (17) 5.2 (19) (21) 58.1 (22) Filter type GAS (BSPP) Degree of filtration Ports IN/OUT Flow US gpm (l/min) p= 11 psi (.75 bar) Flow US gpm (l/min) p= 21.8 psi (1.5 bar) NPT SAE J514b FG3 FG6 FG1 FG25 FG3 FG6 FG1 FG25 HF G 1/2 1/2 NPT 3/4-16 UNF-2B G 3/4 3/4 NPT 1 1/16-12 UN-2B 9.2 (35) 9.2 (35) 1.6 (4) 1.6 (4) 11.9 (45) 11.9 (45) 14.5 (55) 14.5 (55) 1.6 (4) 11.9 (45) 13.2 (5) 14.5 (55) 15.9 (6) 17.2 (65) 19.8 (75) 21.1 (8) HF HF G 1/2 1/2 NPT 3/4-16 UNF-2B 11.9 (45) G 3/4 3/4 NPT 1 1/16-12 UN-2B 11.9 (45) G 1/2 1/2 NPT 3/4-16 UNF-2B 15.9 (6) G 3/4 3/4 NPT 1 1/16-12 UN-2B 17.2 (65) 14.2 (55) 14.2 (55) 17.2 (65) 18.5 (7) 15.9 (6) 17.2 (65) 19.8 (75) 21.1 (8) 18.5 (7) 19.8 (75) 22.5 (85) 23.8 (9) 15.9 (6) 17.2 (65) 21.1 (8) 22.5 (85) 18.5 (7) 19.8 (75) 23.8 (9) 25.1 (95) 22.5 (85) 23.8 (9) 27.7 (15) 29.1 (11) (15) 31.7 (12) 35.7 (135) HF G 1/2 1/2 NPT 3/4-16 UNF-2B 18.5 (7) G 3/4 3/4 NPT 1 1/16-12 UN-2B 19.8 (7) 19.8 (75) 22.5 (8) 22.5 (85) 25.1 (95) 25.1 (95) 27.7 (15) (15) 27.7 (15) 3.4 (115) 31.7 (12) 34.3 (13) 34.3 (13) 38.3 (145) 8 2 ICAT18-2

11 HF745-2 DIMENSIONS VERSION F2 B6 B6N B6R VERSION F3 By-pass By-pass and no return valve By-pass and reverse flow valve B BN BR Without by-pass Without by-pass with no return valve Without by-pass with reverse flow Filter type HF HF HF Weight A B (Ports) C kg (lbs) 3,8 (8.38) 4,2 (9.26) 5,7 (12.57) Availability 173 (6.811) GAS (BSPP) 199 (7.8346) 299 ( ) NPT SAE J514b M 8 (drilling F2) M1 (drilling F3) Ports dimensions: see pages Are available the respective threads 5/16-18 UNC-2B for drilling F2 and 3/8-16 UNC-2B for drilling F3. On request, mounting holes can have special threads and different locations between center lines. ICAT

12 HF745-3 DIMENSIONS VERSION F2 VERSION F3 B6 By-pass B6N By-pass and no return valve B6R By-pass and reverse flow valve B BN BR Filter type HF HF Weight A B (ports) C kg (lbs) 6, (13.23) 7,8 (17.2) 213 (8.3858) 32 ( ) Without by-pass Without by-pass with no return valve Availability GAS (BSPP) NPT SAE J514b Without by-pass with reverse flow M1 Ports dimensions: see pages The respective threads 3/8-16 UNC-2B are available. On request, mounting holes can have special threads and different locations between center lines. 1 2 ICAT18-3

13 HF748-2 DIMENSIONS VERSION F2 B6 B6N B6R VERSION F3 By-pass By-pass and no return valve By-pass and reverse flow valve B BN BR Without by-pass Without by-pass with no return valve Without by-pass with reverse flow Filter type HF HF HF HF Weight A B (Ports) C kg (lbs) 3,4 (7.49) 3,8 (8.38) 4,2 (9.26) 4,8 (1.58) 171 (6.7322) 24 (8.314) 25 (9.8424) 31 (11.853) Availability GAS (BSPP) NPT SAE J514b M 8 (drilling F2) M1 (drilling F3) Ports dimensions: see pages Are available the respective threads 5/16-18 UNC-2B for drilling F2 and 3/8-16 UNC-2B for drilling F3. On request, mounting holes can have special threads and different locations between center lines. ICAT

14 ELEMENTS DIMENSIONS FOR HF745 Filtering elements with p - collapse pressure of 346 psi (21 bar) are also available (please consult our technical department). Technical data for (MS) version elements are available on request. Element type ØA ØB C Filtering surface (AS) cm 2 (in 2 ) Dirt holding capacity (ISO MTD) p = 72.5 psi (5 bar) FG3 FG6 FG1 FG25 gr (lbs) gr (lbs) gr (lbs) gr (lbs) HEK (3.4252) 415 ( ) 2,3 (.51) 3, (.66) 3,3 (.73) 4,8 (.16) HEK HEK ,5 (1.39) 46,5 (1.837) 113 (4.4488) 21 (8.2677) 56 (86.82) 113 ( ) 3,1 (.69) 6,2 (.136) 4, (.89) 7,9 (.175) 4,5 (.99) 8,8 (.195) 6,5 (.143) 12,8 (.282) HEK HEK ,5 (1.827) 54,5 (2.1457) 122 (4.831) 23 (9.551) 98 (14.743) 188 (28.245) 5,1 (.112) 1,1 (.223) 6,5 (.144) 13, (.287) 7,3 (.16) 14,5 (.319) 1,5 (.232) 21, (.462) 12 2 ICAT18-3

15 ELEMENTS DIMENSIONS FOR HF748 Filtering elements with p - collapse pressure of 346 psi (21 bar) are also available (please consult our technical department). Technical data for (MS) version elements are available on request. Element type A Filtering surface (AS) cm 2 (in 2 ) Dirt holding capacity (ISO MTD) p = 72.5 psi (5 bar) FG3 FG6 FG1 FG25 gr (lbs) gr (lbs) gr (lbs) gr (lbs) HEK (3.1495) 493 ( ) 2,8 (.61) 3,5 (.77) 3,9 (.85) 5,7 (.125) HEK HEK (4.662) 157 (6.181) 739 ( ) 119 ( ) 4,1 (.9) 5,7 (.125) 5,3 (.116) 7,3 (.16) 5,9 (.13) 8,1 (.178) 8,6 (.189) 11,8 (.26) HEK (8.1495) 1339 ( ) 7,5 (.165) 9,6 (.211) 1,7 (.235) 15,5 (.348) ICAT

16 INDICATORS VISUAL DIFFERENTIAL Code: H VISUAL ELECTRICAL DIFFERENTIAL WITH THERMOSTAT Code: W VISUAL ELECTRICAL DIFFERENTIAL Code: U 116 psi (8 bar) without by-pass Differential pressure setting 72.5 psi (5 bar) with by-pass 25 VAC Max. working voltage 3 VCC 3 A (resistivity) Max. working current 3 A (inductive) Protection class IP 66 - Cable clamp PG 11 Min. function temperature 86 F (3 C) N.C. N.O. N.C. N.O. Differential pressure setting 116 psi (8 bar) without by-pass 72.5 psi (5 bar) with by-pass T=3 C 116 psi (8 bar) without by-pass Differential pressure setting 72.5 psi (5 bar) with by-pass 25 VAC Max. working voltage 3 VCC 3 A (resistivity) Max. working current 3 A (inductive) Protection class IP 66 - Cable clamp PG ICAT18-3

17 PORTS IN/OUT PORTS TYPE Nominal Gas NPT SAE Filter type size BSPP ODT HF745-2 HF748-2 HF /2" GD ND OB 3/4" GE NE OD 3/4" GE NE OD 1" GF NF OF GAS STRAIGHT THREAD PORTS BSPP British standard pipe parallel (55 ) conforms to UNI - ISO 228 CODE Nominal size GD 1/2" G 1/2 GE 3/4" G 3/4 GF 1" G 1 A B 19, (.748) 24,5 (.9646) 3,5 (1.28) C 16, (.6299) 18, (.787) 22, (.8661) Nm (lbf in) 5 +2,5 ( ) 9 +5 ( ) ( ) ICAT

18 PORTS IN/OUT NPT STRAIGHT THREAD PORTS NPT NPT thread (6 ) conforms to ANSI - ASME B1-2 CODE Nominal size ND 1/2" 1/2 NPT NE 3/4" 3/4 NPT NF 1" 1 NPT A B 18, (.787) 23,5 (.9252) 29,5 (1.1614) C 13,5 (.5315) 14, (.5512) 17,5 (.6889) Nm (lbf in) 45 +2,5 (398 42) (664 78) ( ) SAE STRAIGHT THREAD PORTS J514 ODT American straight thread UNC-UNF 6 conforms to ANSI B 1.1 CODE Nominal size OB 1/2" 3/4" - 16 UNF - 2B OD 3/4" 1 1/16" - 12 UN - 2B OF 1" 1 5/16" - 12 UN - 2B A B 17,3 (.6811) 24,7 (.9724) 31, (1.225) C 15, (.596) 2, (.7874) 2, (.7874) Nm (lbf in) 45 +2,5 (398 42) ( ) ( ) 16 2 ICAT18-3

19 ASSEMBLY AND REPLACING ELEMENT INSTRUCTIONS ASSEMBLY Once you have checked the integrity of the filter inside its package, proceed as follows: A Secure the filter to the attachment device via the threaded holes in the head (pos.6). B Take the protection caps off the oil inlet and outlet. C Connect the circuit pipes to the filter, checking the flow direction, which is pointed out by the arrow on the head (pos.6). D If the clogging indicator (pos ) is iediately mounted in the filter, take the protection cap off and screw the indicator in the dedicated seat, then tighten to a tightening torque of 531 lbf in (6 Nm). If the indicator is electric, complete the required connections. E Start the circuit for a few minutes. F Make sure there are no leaks. REPLACING ELEMENT Once the working hours limit indicated in the maintenance instructions of the system is reached, or when the clogging indicators point out the limit pressure drop created inside the filter, the cartridge must be replaced, remembering that this procedure involves the drainage of hydraulic oil and therefore you need to prepare suitable containers to collect the oil. Proceed as follows: A B C D E F G H I Stop the system in Machine stopped status. Secure any shut-off valves on the hydraulic circuit. Unscrew the filter container (pos.1). Remove the clogged filtering cartridge (pos.5), making sure no residual particles have settled on the bowl bottom (pos.1). Make sure the seal (pos.2), the O-ring (pos.4) and the anti-extrusion ring (pos.3) are not damaged, otherwise replace them and consequently position the new ones correctly. Insert the new filtering cartridge, lubricating the sealing O-ring beforehand. Screw the container tight (pos.1) making sure the threading is screwed correctly. Tighten to a tightening torque as indicated on pages 9, 1 and 11. Start the machine for a few minutes. Make sure there are no leaks. Pos. Description 1 Filter bowl 2 External O-Ring 3 Anti-extrusion ring 4 Sealing O-Ring 5 Filtering element 6 Filter head 7 By-pass valve 8 Sealing cap 9 Visual differential indicator 1 Visual electrical differential indicator 11 Visual electrical differential indicator with thermostat When ordering spare parts, always specify the reference number, the filter code and quantity. Example: Spare part pos. 4 - HHP Qty 2 ICAT

20 HOW TO ORDER A COMPLETE FILTER HF745 HF AS - FG1 - LC - B6 - GD - B - XA - G - F2 1 Filter type CODE See table from pag. 9 to pag. 11 HF Filtering surface CODE Standard Multilayer AS MS 3 Degree of filtration CODE 3 m] Micro-fibre glass FG3 6 [ m] Micro-fibre glass FG6 1 m] Micro-fibre glass FG1 25 [ m] Micro-fibre glass FG25 4 p collaps pressure CODE 29 [psi] (2 [bar]) LC 346 [psi] (21 [bar]) HC 5 Valves CODE By-pass setting 87 [psi] (6 [bar]) By-pass setting 87 [psi] (6 [bar]) and no returne valve By-pass setting 87 [psi] (6 [bar] and reverse flow valve Without Without by-pass, with no returne valve Without by-pass, with reverse flow valve B6 B6N B6R B BN BR 7 Seals CODE Buna Viton 8 Indicator ports CODE Right side arranged Left side arranged Upper side arranged (only for HF745/ F3 and HF F2) B V XA XB XD 9 Indicator CODE Without indicator, with plug Visual differential indicator Visual electrical differential indicator Visual electrical differential indicator with thermostat 1 Drilling CODE 2 Holes M8 (HF745/HF748-2) 4 Holes M1 (HF745-3) F2 3 Holes M1 F3 G H U W 6 Ports IN/OUT CODE Threads GAS (BSPP) G1/2 GD G3/4 GE G1 GF Threads NPT 1/2 ND 3/4 NE 1 NF Threads SAE ODT 1/2 OB 3/4 OD 1 OF Standard On riquest 18 2 ICAT18-5

21 HOW TO ORDER A REPLACEMENT ELEMENT HEK85 HEK AS - FG1 - LC - B 1 Element type CODE See table pag. 11 HEK85-.. See table pag. 13 HEK p collapse pressure CODE 29 [psi] (2 [bar]) LC 346 [psi] (21 [bar]) HC 2 Filtering surface CODE Standard AS Multilayer MS 5 Seals CODE Buna B Viton V 3 Degree of filtration CODE 3 m] Micro-fibre glass FG3 6 [ m] Micro-fibre glass FG6 1 m] Micro-fibre glass FG1 25 [ m] Micro-fibre glass FG25 Standard On request ICAT

22 NOTES: 2 2 ICAT18-5

23 Building & construction Agriculture Truck Market Material Handling Industrial Full range of filters for all hydraulic circuits

24 Suction filters HF 41 HF 412 HF 431 HF 434 HF 437 Tank mounted return line filters HF 52 HF 58 HF 547 HF 554 HF 57 HF 575 HF 578 Tank mounted return and suction line filters HF 525 In line filters Spin-On HF 62 HF 625 HF 65 In line medium and high pressure filters HF 69 HF 75 HF 71 HF 725 HF 735 HF 745 HF 748 HF 76 HF 761 Accessories Filler breathers Air filters Level and temperature gauges Pressure gauges Pressure/vacuum gauges Clogging indicators HF T A Edition: Replaces: HF T A IKRON S.r.l. Via Prampolini, Lemignano di Collecchio - Parma - Italy Tel.: Fax: IP Videoconferencing info@ikron.it