6 720 220 046
Revised 03-11 Subject to change without prior notice
15
TA Series
MAINTENANCE
1. Filter changes or cleanings are required at
regular intervals. The time period between lter
changes will depend upon type of environment
the equipment is used in. In a single family
home, that is not under construction, changing
or cleaning the lter every 60 days is sufcient.
In other applications such as motels, where daily
vacuuming produces a large amount of lint, lter
changes may be need to be as frequent as
biweekly.
Equipment should never be used during
construction due to likelihood of wall board
dust accumulation in the air coil of the
equipment which permanently affects the
performance and may shorten the life of the
equipment.
2. An annual “checkup” is recommended by a
licensed refrigeration mechanic. Recording the
performance measurements of volts, amps, and
water temperature differences (both heating and
cooling) is recommended. This data should be
compared to the information on the unit’s data
plate and the data taken at the original startup of
the equipment.
3. Lubrication of the blower motor is not required,
however may be performed on some motors to
extend motor life. Use SAE-20 non-detergent
electric motor oil.
4. The condensate drain should be checked
annually by cleaning and ushing to insure
proper drainage.
5. Periodic lockouts almost always are caused by
air or water ow problems. The lockout
(shutdown) of the unit is a normal protective
measure in the design of the equipment. If
continual lockouts occur call a mechanic
immediately and have them check for: water ow
problems, water temperature problems, air ow
problems or air temperature problems. Use of
the pressure and temperature charts for the unit
may be required to properly determine the
cause.
Maintenance
TROUBLESHOOTING
Problem Possible Cause Checks and Corrections
No Flow
Low Flow
No Power Check power supply
On/Off Switch Position Set switch to “ON” position
Compressor Contactor Engage heat pump contactor
Broken or loose wires Repair or tighten wires
Air Lock Purge air from piping system
Stuck pump shaft/impeller Remove pump cartridge and clean
Defective pump Replace pump
Kinked or under sized water piping Repair kink and check for proper line size
High Water
Temperature
Water temp limit closed Stuck limit switch
Sensor not attached securely to line
Low Heat
Output
Scaled or fouled heat exchanger Clean heat exchanger
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