VSI Series 1000-X Electric Actuator
Operation and Maintenance Manual
12
OPERATION TEST
1. Connect wiring per the wiring diagram – located in the front wiring cover.
2. Verify that the valve rotates to the closed position by observing the dome indicator points to the red zero “shut”.
3. Verify that the valve rotates to the open position by observing the dome indicator points to the yellow zero “open”.
4. After all adjustments mentioned above, check the alignment of the dome indicator scale and pointer. If the pointer is not
aligned properly on open and closed position adjust as needed by loosening the dome lock screw and re-tightening.
• All actuators utilize high grade molybdenum based grease for their gears. No lubrication or periodic maintenance is
required.
• If actuators are rarely cycled, periodic rotation operation should be scheduled to check if abnormal conditions are present.
MAINTENANCE AND SERVICE
TROUBLESHOOTING GUIDE
PROBLEM
CAUSE
REMEDY
Actuator fails to operate Power is not connected
Connect power or replace circuit breaker
Manual/Auto pushbutton is not engaged
Press manual/auto pushbutton on unit to
engage power
Voltage is too low
Check and correct voltage
The actuator is in thermal protection mode
due to over torque situation, or ambient
temperature is too high
Remove over torque conditions. Check valve
to ensure manual movement without sticking.
Cool down ambient temperature. Ensure that
mechanical limits are not keeping actuator
from reaching electrical limits.
Defective micro-switch
Replace micro-switch or Contact VSI
Defective capacitor
Contact VSI
Actuator does not
feedback for open/
closed position
Defective micro-switch
Replace micro-switch or Contact VSI
Improper micro-switch position
Readjust the electrical limits according to
instructions
Motor continues to
operate after reaching
limit
Defective micro-switch
Replace micro-switch or Contact VSI
Power is not connected correctly
Recheck power connections
Improper micro-switch position
Readjust the electrical limits according to
instructions
Mechanical limit is out of adjustment
Readjust the mechanical limits according to
instructions
Water present inside of
actuator
Inlet power cables are not properly installed
per instructions
Recheck conduit connections
The dome indicator lens is broken
Contact VSI
Housing screws are not tightened and sealed
Tighten housing screws
Condensation heater not working or not
connected
Check heater connections or Contact VSI
Valve Solutions Inc, LLC
tel: (770) 740 0800
fax: (770) 740 8777
www.valvesolutions.com
