
10
HQ5 Rev 1
5.2 Tools
• Metric Allen Key (Hex Wrench) × 1
• Screw Driver × 1
• Metric Spanner × 1
• Wrench 200mm × 1
• Wrench 300mm × 1
• Wire Stripper Long Nose × 1
• Multi-meter (AC, Dc, Resistance) × 1
• PCU Board Option: DC Signal Generator (4 – 20mA DC) × 1
• PCU & CTU Board Option: 1mA Ammeter (0 – 25mA)
6. Troubleshooting
Thefollowinginstructionsarelistedintheorderofthemostcommondifcultiesencountered
during the installation and start-up.
Failure Mode Probable Cause Corrective Action
Motor will not run Open in control circuit
Insulation resistance
breakdown in motor
Refer to appropriate wiring diagram
and check for continuity
Perform megger Test
No power available to
actuator
Tripped circuit breaker Reset circuit breaker
Manual Override hard to
turn
Valve stem improperly
lubricated
Actuator lubrication has
broken down
Valve Torque too high
Jammed valve
Lubricate with grease
Clean out old grease and replace
with recommended lubricant
Check torque with manufacturer
Refer to valve maintenance
Valve only opens or closes
partially with motor
Limit switch setting incorrect 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
Manual override engaged Make sure manual override lever in
horizontal position
Actuator operates more
than 90°
Limit switch setting incorrect
or wiring of single phase
actuator
Please check to make sure limit
switches are set for 90° and
actuator is switched on neutral
signal not live signal
Green (Open) LED not
working
Wiring of single phase
actuator
Please check actuator is switched
on neutral signal not live signal
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