HKC HQ-005 Installation, Operation And Maintenance Manual

Installation, Operation and Maintenance Manual
HQ-005 Electric Actuator
Document No. HKQI-611
10 | P a g e
6 TROUBLE SHOOTING
The following instructions are listed in the order of the most common difficulties encountered during the
installation and start-up.
! The actuator does not respond
 Visually inspect the actuator to check no shipping or handling damage has occurred
 Verify the line voltage supplied to the actuator; check that the line voltage matches with the rating on
the actuator’s nameplate
 Check the internal wiring against the supplied wiring diagram of the actuator (copy of which can be
found on our website)
 Check the limit switch cams
! The actuator is supplied with power but does not operate
 Verify the line voltage supplied to the actuator; check that the line voltage matches with the rating on
the actuator’s nameplate.
 Check that the actuator torque is greater than the valve torque
 Check the limit switch cams
 Check that the torque switches have not been tripped
 Check the mechanical travel stop adjustment
 Verify that the actuator against the rotation of the valve (standard units are counter-clockwise rotation
to open)
 Check for any corrosion and condensation that any of the electrical or mechanical devices have not
been contaminated
 Verify that coupler/bracket is correctly installed and is not causing any binding
! Actuator runs erratically
 Check the ambient temperature
 Verify that the duty cycle has not been exceeded
 Check the position of manual override lever
Symptom
Probable Cause
Corrective Action
Motor will not run
Open in control circuit
Refer to appropriate wiring diagram and check
for continuity
Insulation resistance breakdown
in motor
Perform megger Test
No power available to actuator
Tripped circuit breaker
Reset circuit breaker
Manual Override hard to turn
Valve stem improperly lubricated
Lubricate with grease
Clean out old grease and replace with
recommended lubricant
Actuator lubrication has broken
down
Valve packing gland too tight
Loosen packing gland nuts as necessary
Jammed valve
Refer to valve maintenance
Valve only opens or closes
partially with motor
Limit switch improperly set
Check setting and reset if necessary
Manual Override Nut will not
operate valve
Stripped gearing
Replace as necessary
Broken hand wheel shaft
Replace as necessary
Broken valve stem
Repair or replace as necessary
Motor runs but will not operate
valve
Stripped gearing
Replace as necessary

HKC HQ-005 Specifications

General

Brand	HKC
Model	HQ-005
Category	Controller
Language	English