HQ Series I&M Manual HQ-400-1005 8
10.0 Limit Switch Setting Instructions (cont)
Operate the actuator manually to closed position
Using a hex wrench, loosen the cam adjustment screw in the CLOSE limit switch cam
Rotate the CLS cam towards CW limit switch lever until the switch ‘clicks’
Tighten set screw with hex wrench
Operated the actuator manually to open position
Using a hex wrench, loosen the cam adjustment screw in the OPEN limit switch cam
Rotate the OLS can towards CCW limit switch lever until the switch ‘clicks’
Tighten set screw with hex wrench
11.0 Torque Switch Adjustment
The torque switches are adjusted at factory to protect actuator and valve against over torque.
Should adjustment be necessary, please contact the factory, or your local EIM distributor for assistance.
12.0 Reverse Acting (Counter Clockwise to Close)
Standard factory actuators are normally set to clockwise rotation to close. However the rotation can be
reverse to counter-clockwise to close by simply reconfiguring the wiring as follows:
Exchange 9 and 10 in main actuator terminal block
Exchange 11 and 12 in main actuator terminal block
If a PCU card is installed:
Exchange Potentiometer input wires P1(Orange wire) and P3 (Grey wire) on PCU
Change the direction of the indicator (HQ-200 and 300 only)
Re Calibrate by using Auto Calibrate feature
14.0 Lubrication
The HQ series actuators are totally enclosed units with a permanently lubricated gear trains (Moly EP
Grease). Once installed lubrication should not be required. However, periodic preventative maintenance
will extend the operating life of the actuator.
