130 4280 010 E
Troubleshooting
Symptom Possible Cause Corrective Action
Supply voltage incorrect or missing
Check switches, fuses, circuit breakers,
and actuator wiring connections (refer to
Table 1)
Flow rate set too low
Turn the ‘M’ adjustment screw
counterclockwise to increase the flow rate
(refer to chapter Adjustments)
Motor does not
run
Internal defect
Replace actuator (refer to chapter
Actuator Replacement)
Operating pressure too high
Verify that the maximum operating
pressure is not exceeded (refer to chapter
Specifications)
Incorrect mounting position of horizontal
actuator
Turn actuator. Observe mounting positions
as indicated on actuator label
Stroke setting set below 3 mm
Turn the ‘R’ or ‘S’ adjustment screw
counterclockwise to increase the stroke
(refer to chapter Adjustments)
Flow direction
Check flow direction: the flow direction is
indicated by an arrow on the valve body
Motor runs but
valve does not
open
Internal defect
Replace actuator (refer to chapter
Actuator Replacement)
Motor does not
turn off
Limit switch defective
Replace terminal box (refer to chapter
Repairs and Replacement)
Incorrect wiring Check wiring (refer to Table 1) Actuator moves
through Low
Position
Switch defect
Replace terminal box (refer to chapter
Repairs and Replacement)
Leakage Flanges, fittings Replace seals or screws or replace valve
Dirt on valve seat
Replace valve
Inner leakage
Flow direction
Check flow direction: the flow direction is
indicated by an arrow on the valve body
Fault diagnosis Effects Cause
Remedial
action/Minimising risks
Valve body,
flanges, actuator:
Cracks, holes,
damage, leakage
Piping stressed beyond permitted
limits, recoil forces, pressure
surges, valves used as fixed
point, not permitted pressure and
temperature limits
Reduce pressure and
stress, change piping
position, install
compensators, select other
materials. The piping must
meet all applicable
codes/standards (i.e. TRB,
TRR).
Replace valve
Improper transport, bending
stresses too great, thermal stress
Replace valve, ensure that
piping is laid free of stress
or tension
Flange fitting not
tight, leakage
Danger of explosion
Danger of flying
shrapnel, danger of
poisoning, burns
danger, environmental
pollution
Bolts not tightened diagonally
Proper installation in
accordance with these
operating instructions
Hot surface Burns danger
Wrong operating voltage,
actuator surface becomes hot
Replace actuator, check
operating voltage
Johnson Controls SA/NV - Leuvensesteenweg 248D - B-1800 Vilvoorde - +32(2) 709 40 00 - www.johnsoncontrols.be
Johnson Controls SA/NV - Leuvensesteenweg 248D - B-1800 Vilvoorde - +32(2) 709 40 00 - www.johnsoncontrols.be
To Next Page
Loading...
Need help?
General
