Table of Contents
Advertisement
6.2. Tools
6.2.1.
Metric Allen Key (Hex Wrench) × 1
6.2.2.
Screw Driver × 1
6.2.3.
Metric Spanner × 1
6.2.4.
Wrench 200mm × 1
6.2.5.
Wrench 300mm × 1
6.2.6.
Wire Stripper Long Nose × 1
6.2.7.
Multi-meter (Ac, Dc, Resistance) × 1
7. Trouble Shooting
The following instructions are listed in the order of the most common difficulties encountered during
the installation and start-up.
Symptom
Motor will not run
No power available to actuator
Manual Override Nut hard to
turn
Valve only opens or closes
partially with motor
Manual Override Nut will not
operate valve
Motor runs but will not operate
valve
7.1. The actuator does not respond
7.1.1.
Visually inspect the actuator to check no shipping or handling damage has occurred
7.1.2.
Verify the line voltage supplied to the actuator; check that the line voltage matches with
the rating on the actuator's nameplate
7.1.3.
Check the internal wiring against the supplied wiring diagram of the actuator
7.1.4.
Check the limit switch cams
7.2. The actuator is supplied with power but does not operate
7.2.1.
Verify the line voltage supplied to the actuator; check that the line voltage matches with
the rating on the actuator's nameplate.
7.2.2.
Check that the actuator torque is greater than the valve torque
7.2.3.
Check the limit switch cams
7.2.4.
Check that the torque switches have not been tripped
7.2.5.
Check the mechanical travel stop adjustment
7.2.6.
Verify that the actuator against the rotation of the valve (standard units are counter-
clockwise rotation to open)
7.2.7.
Check for any corrosion and condensation that any of the electrical or mechanical devices
have not been contaminated
7.2.8.
Verify that coupler/bracket is correctly installed and is not causing any binding
7.3. Actuator runs erratically
7.3.1.
Check the ambient temperature
7.3.2.
Verify that the duty cycle has not been exceeded
7.3.3.
Check the position of manual override lever
Doc No. : HumG-HQ004-21 Rev0
WARNING:
Treat cover with care. Gap surfaces must not be damaged or dirtied in any way.
Do not jam the cover during fitting.
Probable Cause
Open in control circuit
Insulation resistance breakdown
in motor
Tripped circuit breaker
Valve stem improperly lubricated
Actuator lubrication has broken
down
Valve packing gland too tight
Jammed valve
Limit switch improperly set
Stripped gearing
Broken hand wheel shaft
Broken valve stem
Stripped gearing
HQ-004 Quarter-turn Electric Actuator
Installation Operation& Maintenance Manual
Refer to appropriate wiring diagram and
check for continuity
Perform megger Test
Reset circuit breaker
Lubricate with grease
Clean out old grease and replace with
recommended lubricant
Loosen packing gland nuts as necessary
Refer to valve maintenance
Check setting and reset if necessary
Replace as necessary
Replace as necessary
Repair or replace as necessary
Replace as necessary
Page 8 / 9
Corrective Action
Valve Automation Leader, HKC
Advertisement
Table of Contents
