Evidence of Moisture, Don’T | Thermo Products MG-1018 guide

All installations and services must be performed by qualified service personnel.

•	“Hunts” or “puffs” at high CFM (speed)	•	Does removing panel or filter reduce “puffing”?
			!	Reduce restriction
			!	Reduce max airflow
Evidence of Moisture
•	Motor failure or malfunction has occurred and	•	Replace motor and perform Moisture Check
	moisture is present
•	Evidence of moisture present inside air mover	•	Perform Moisture Check

		DO		DON’T
•	Check-out motor, controls, wiring and		•	Automatically assume the motor is bad.
	connections thoroughly before replacing motor
•	Orient connectors down so water can’t get in		•	Locate connectors above 7 and 4 o’clock
	!	Install “drip loops”		positions
•	Use authorized motor and control model #’s for		•	Replace one motor or control model # with
	replacement			another (unless an authorized replacement)
•	Keep static pressure to a minimum:		•	Use high pressure drop filters – some have ½”
	! Recommend high efficiency, low static			H2O drop!
		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		•	Plug in power connector backwards
	connectors		•	Force plugs

Moisture Check

•Connectors are orientated “down” (or as recommended by equipment manufacturer)

•Arrange harnesses with “drip loop” under motor

•Is condensate drain plugged?

•Check for low airflow (too much latent capacity)

•Check for undercharged condition

•Check and plug leaks in return ducts, cabinet

•Check proper airflow settings

•Low static pressure for lowest noise

•Set low continuous-fan CFM

•T’stat in bad location?