ES-A-ACV-LF981GD 2115
Commissioning the Pump Control Valve
STEP 1
Pre-set pilots as noted:
Pressure Reducing
– Adjust OUT, counterclockwise, backing pressure off the spring, preventing possible over-pressuring of the system.
Opening and Closing Speed
– Turn the adjustment screws on the Closing Speed and Opening Speed Controls, if the main valve is so
equipped, OUT, counterclockwise, 1½ to 2½ turns from full closed position.
3-Way Solenoid
– Confirm that the manual operator is turn counter clockwise to a full OUT position (See Figure 1).
STEP 2
Loosen a tube fitting or cover plug at the main valve to allow air to
vent during start-up.
STEP 3
Energize the solenoid to check actuation and to confirm connec-
tion to power source.
STEP 4
De-energize the solenoid prior to initial pump start.
STEP 5
Energize the solenoid at pump start to open the main valve,
checking that the main valve opens. Air is vented through the
loosened fitting. Tighten the fitting when liquid begins to vent.
STEP 6
Partially open downstream isolation valve to establish flow through
the system.
STEP 7
Fine tune the Pressure Reducing Control to the desired pres-
sure set point by turning the adjustment screw IN, clockwise to
increase (See Figure 2A) or OUT, counterclockwise to decrease
downstream pressure (See Figure 2B).
STEP 8
Gradually open downstream isolation valve until full open.
Setting the Pressure Reducing Control
18
2A
2B
© 2021 Watts
Installation, Operation and Maintenance - Series LF981GD
Counterclockwise to DECREASE
downstream pressure
Clockwise to INCREASE-
downstream pressure
Figure 2
CP15 — Pressure Reducing Control
Clockwise for MANUAL
Operation
Figure 1
3-Way Solenoid
