Retrofit Actuator MS and MS Instructions R L

Transcription

1 Retrofit Actuator MS and MS Instructions R OCK

2 Ta b l e o f c o n t e n t s Actuator removal instructions Remove existing actuator and linkage electronic hydraulic actuator Remove existing actuator existing DuraDrive actuator Assembly Assembling linkage to valve electronic hydraulic actuator only Spring-return actuators without manual override 2-way valves Spring-return actuators without manual override 3-way valves Wiring diagram Typical wiring diagram for MS40 series Environmental specifications Temperature, humidity, and NEMA rating P a g e 2 D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s

3 A c t u a t o r r e m o v a l i n s t r u c t i o n s Note: Personal working on an actuator replacement should wear safety glasses at all times during this changeout. Remove existing actuator and linkage MP55XX electronic hydraulic actuator 1. Disconnect all wiring attached to actuator. 2. Disassemble actuator from valve body by unscrewing actuator from extension. 3. Remove extension from valve body. 4. Using channel locks, compress the spring and square washer on top of spring. Using a flat head screwdriver, turn the brass square nut counter-clockwise to release the washer. CAUTION: Spring is under compression and brass square nut and/or spring could be propelled from valve body if not firmly held. Note: Remove spring, washer, and brass extension attached to valve stem. 5. See Figure 4-1 on page 4. Remove existing actuator existing DuraDrive actuator 1. Disconnect all wiring attached to actuator. 2. Disassemble actuator from linkage. oosen the nuts on the shaft clamp and the anti-rotation shaft. 3. See Figure 5-1 on page 5 for a 2-way valve (STS, Ultra-sorb and steam injection humidifiers). Or see Figure 6-1 on page 6 for a 3-way valve (TS ). D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s P a g e 3

4 A s s e m b l y Assembling linkage to valve changing from a MP55XX electronic hydraulic actuator to a DuraDrive actuator. Assemble the linkage to the valve, according to Figure 4-1 below. Continue the assembly process according to Figure 5-1 on page 5. Note: Turn to page 5 if replacing an existing DuraDrive actuator. Figure 4-1: Assembling linkage to valve. 1 ocate and remove the two jam nuts taped to the linkage housing, then screw the nuts to the bottom of the valve stem (at least 1/4" of the stem should extend above the top nut). 2 Tighten the jam nuts against each other, using two 5/16" open-end wrenches. 3 Raise the valve stem to the full up position. R OCK Typical Actuator (MS41-707X shown) 5 oosen the shaft clamp nuts and remove the actuator from the linkage. Typical Valve Body (2-Way shown) 4 oosen the anti-rotation screw and disengage it from the slot on the bottom of the actuator. Remove the actuator if necessary. inkage 6 Rotate the pinion shaft CW to fully lower the rack, and then position the linkage over the valve stem. 7 Fully thread the linkage rack onto the valve stem, and then engage the valve mounting nut in the linkage adaptor. 8 Orient the linkage on the valve as desired, and then tighten the valve mounting nut against the linkage adaptor, using a 1-5/8" open end wrench. 9 Rotate the pinion shaft CCW to raise the rack and expose the jam nuts. 10 Tighten the jam nuts against the rack, using a 5/16" open-end wrench on the lower jam nut. P a g e 4 D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s

5 A s s e m b l y 2-Way valve actuator replacement (stem up closed) Spring-return actuators without manual override MS40-707X and MS40-715X Install the actuator onto the linkage and 2-way valve, and set-up the assembly according to Figure 5-1 below. Figure 5-1: Mounting spring-return actuator on 2-way valve and setting-up actuator/linkage/valve assembly. 1 Rotate the linkage's pinion shaft to the valve open position: Stem Up Closed Valves - Rotate the pinion shaft CW to extend the linkage rack to the down position. COSED OPEN Optional: Affix the Open and Closed labels to the indicator in the appropriate positions. 2 Slide the actuator, "" side facing out, onto the linkage's pinion shaft. 3 Align the actuator with the linkage. 4 Slide anti-rotation screw NYBA-161 half way into the slot on the bottom of the actuator, and then tighten the nut on the anti-rotation screw. NYBA-161 Anti-Rotation Screw for MS40-707X, MS40-715X R R 6 ightly finger-tighten the two nuts on the shaft clamp(s), and then set up the actuator and tighten the shaft clamp(s) as follows: For N.C. Operation, Stem Up Closed Valves a. Power the actuator to the end of stroke MS40-704X, MS40-707X, MS40-715X Proportional Control - Change the reversing switch setting from direct acting () to reverse acting (R), and then apply power to drive the actuator to the end of stroke. 1 b. Verify that the linkage rack is still in the full down position. c. Using a 10 mm wrench or socket, torque the nuts equally on the shaft clamp(s), 8 to 10 lb-ft (11 to 14 N-m). The actuator is now in the open position, at the end of stroke. d. When finished, return the switch setting to direct acting (). 5 Make sure the actuator is in full contact with the plastic stand-offs on the linkage. 1 Caution: When used on a VB-9XXX or similar 1/2" to 1-1/4" (15 mm to 32 mm) valve body, push the valve stem all the way down and adjust the rack to get at least 1/32" (1 mm) clearance above the top of the packing. Use only 35 lb-in. (16 N-m) MS40-704X actuators on obsolete valves. Stem or plug damage may result from using actuators with higher output torques. Apply power to the actuator and check the system's operation for proper operation, in response to the control signal. For electronic hydraulic actuator to DuraDrive actuator, refer to the wiring diagram on page 7. For existing DuraDrive to DuraDrive actuator assembly, refer to wiring diagrams supplied with your humidifier. D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s P a g e 5

6 A s s e m b l y 3-Way valve actuator replacement Spring-return actuators without manual override MS40-707X and MS40-715X Install the actuator onto the linkage and 3-way valve, and set-up the assembly according to Figure 6-1 below. Figure 6-1: Mounting MS40-707X and MS40-715X and setting-up actuator/linkage/valve assembly. 1 Rotate the linkage's pinion shaft CCW, to retract the rack (stem up). 2 Slide the actuator, "" side facing out, onto the linkage's pinion shaft. COSED OPEN Optional: Affix the Open and Closed labels to the indicator in the appropriate positions. 4 Make sure the actuator is in full contact with the plastic stand-offs on the linkage. 5 Holding the actuator at the 10 position, use a 10 mm wrench or socket to tighten the two nuts equally on the shaft clamp, 8 to 10 lb-ft (11 to 14 N-m). R R OCK 3 Align the actuator with the mounting plate, then rotate it 10 CW. Note that 1-3/8" movement at the anti-rotation slot (measured at the antirotation slot's centerline) is sufficiently equal to Tip: MS40-707X and MS40-715X actuators are shipped at the end of stroke, without preload. 1-3/8" MS40-707X, MS40-715X Proportional Control - Change the reversing switch setting from direct acting () to reverse acting (R), and then apply power to drive the actuator to the end of stroke. When finished, return the switch setting to direct acting () /8" Open-End Wrench /8" 2 Tip: A 1-5/8" open-end wrench can be used to measure the amount of rotation (measured between opposite sides of the slot). NYBA-161 Anti-Rotation Screw for MS40-707X, MS40-715X 6 Apply power to the actuator to rotate it CCW into alignment with the mounting plate, and then slide anti-rotation screw NYBA-161 halfway into the slot on the bottom of the actuator. Tighten the nut on the anti-rotation screw. 3 Warning: Take care not to pinch your fingers or hand between the actuator and the mounting plate, when powering the actuator into alignment. Caution: When setting the valve preload, power must be used to position the actuator. Do not manually force the actuator into the mounting position. If forced, damage to the pinion shaft or improper close-off may occur. Apply power to the actuator and check the system's operation for proper operation, in response to the control signal. For electronic hydraulic actuator to DuraDrive actuator changeover, refer to the wiring diagram on page 7. For existing DuraDrive to DuraDrive actuator change-over, refer to wiring diagrams supplied with your humidifier. P a g e 6 D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s

7 W i r i n g d i a g r a m s f o r e l e c t r o n i c h y d r a u l i c a c t u a t o r s t o D u r a D r i v e Figure 7-1: Typical wiring diagram for MS and MS proportional actuators. Environmental specifications Ambient temperature limits: Shipping and storage, -40 to 60 F (-40 to 71 C) Operating, -22 to 140 F (-30 to 60 C) Humidity: 15 to 95% RH, non-condensing NEMA rating: NEMA 1 (IEC IP30). NEMA 2 (IEC IP54) with conduit connector in the down position D R I S T E E M R e t r o f i t a c t u a t o r i n s t r u c t i o n s P a g e 7

8 For more information DRISTEEM Corporation An ISO 9001 certified company and a subsidiary of Research Products Corporation U.S. Headquarters: Technology Drive Eden Prairie, MN (fax) Invensys and DuraDrive are trademarks of Invensys plc and its subsidiaries and affiliates. Specifications may change as design improvements are introduced DRISTEEM Corporation Form No. Retrofit instructions, MS & MS /04 Part No