Troubleshooting Guide - HydroAir AV50-3DN-S Manual Del Propietário

SYMPTOMS
1. Pump will not prime
2. Motor does not turn
3. Low flow
4. Motor runs hot
5. Noisy operation of
motor
6. Noisy operation of
pump
7. Motor overload pro-
tection "kicks out"

TROUBLESHOOTING GUIDE

PROBABLE CAUSES
1a. Suction air leak
1b. No water in pump
1c. Closed valves or blocked
lines
1d. Low speed motor setting
(ECT)
2a. No power to motor.
2b. Pump jammed.
3a. Dirty filter
3b. Dirty skimmer basket
3c. Suction air leak
3d. Closed valves or blocked
lines
3e. Low speed motor setting
These motors will run "hot" to the
touch. However this is normal, they
are designed that way. Thermal
overload protector will function to
turn them off if there is an overload
or high temperature problem.
Excessive heat can be caused by:
4a. Low or incorrect voltage.
4b. Installed in direct sun.
4c. Poor ventilation.
5a. Bad bearings
6a. Air leak in suction line.
Bubbles in water returning
to pool at inlet
6b. Restricted suction line due
to blockage or undersize
pipe. Indicated by high
vacuum reading at pump
suction.
6c. Foreign matter (gravel,
metal etc.) in pump
impeller.
6d. Cavitation.
7a. Motor is improperly
connected.
7b. Low voltage due to under-
sized wire or low incoming
voltage.
NOTE: ALL ELECTRICAL WORK MUST BE DONE BY A LICENSED ELECTRICIAN
RECOMMENDED ACTION
• Be sure water in pool is high enough to flow through skimmer.
• Make sure strainer gasket is clean and properly positioned.
• Hand tighten strainer cover down snugly.
• Tighten all pipes and fittings on suction of pump.
• Remove and replace pump seal.
• Make sure pump tank is full of water
• Open all valves in system.
• Clean skimmer and pump strainer.
• Open pump and check for clogging.
• Switch motor to high speed.
• Check that all power switches are on.
• Be sure fuse or circuit breaker is properly set.
• Timer properly set?
• Check timer for proper operation.
• Check motor wiring at terminals.
• With power off turn shaft – it should spin freely. If not electrician
should disassemble and repair.
• Back wash filter when filter pressure is "high"
• Clean skimmer and pump strainer baskets.
• (See problem 1).
• (See problem 1).
• Switch to high speed.
• Wiring to be corrected by licensed electrician.
• Shield motor from sun's rays.
• Do not cover or enclose motor.
• Have an electrician replace bearings in motor.
• Repair leak.
• Check suction pipe.
• Is strainer cover in place?
• Is cover gasket clean?
• Have serviceman remove blockage or increase suction pipe size.
• Make sure strainer basket is clean.
• Are all suction valves fully open?
• Have electrician disassemble pump and remove foreign matter from
impeller.
• Improve suction conditions (reduce suction lift, reduce number of
fittings, increase pipe size).
• Increase discharge pressure and reduce flow by throttling discharge
valve.
• Have electrician check wiring diagram on motor.
• Have electrician check with volt meter.
• Increase size of supply wire.
• Report low supply voltage to power company.
• Voltage of motor must be within 10% of motor nameplate voltage.