SERVICING
44
DO DON'T
- Check-out motor, controls, wiring,
and connections before replacing motor.
- Automatically assume the motor is bad.
- Orient connectors down to prevent water
infiltration.
- Locate connectors above 7 and 4 o'clock
positions.
- Install "drip loops".
- Use authorized motor and control model #'s
for replacement.
- Replace one motor or control model # with
another (unless an authorized replacement).
- Keep static pressure to a minimum: - Use high pressure drop filters - some have
1/2" H2O drop!
- Recommend high efficiency, low static
filters.
- Use restricted returns.
- Recommend keeping filters clean.
- Design ductwork for min. static, max
comfort.
- Look for and recommend ductwork
improvement, where necessary, in
replacement.
- Size the equipment wisely. - Oversize system then compensate with low
airflow.
- Check orientation before inserting motor
connectors.
- Plug in power connector backwards.
- Force plugs.
ECM VARIABLE SPEED CIRCULATOR BLOWER MOTORS
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