Carrier 50TFQ008-012 Typical Belt-Drive Motor Mounting for Size, Size 008 Fan Motor Performance

To align the fan and motor pulleys: 1. Loosen the fan pulley setscrews.

2. Slide the fan pulley along the fan shaft.

3. Make angular alignment by loosening the motor from the mounting plate.

To adjust belt tension:

1. Loosen the fan motor mounting nuts.

2. Sizes 008 and 009 — Slide the motor mounting plate away from the fan scroll for proper belt tension (1/2-in. deflection with 5 to 10 lb of force) and tighten the mount- ing nuts (see Fig. 38).

Size 012 — Slide the motor mounting plate downward to tighten belt tension (1/2-in. deflection with 5 to 10 lb of force). Secure the motor mounting plate nuts. See Fig. 39.

3. Adjust the bolt and nut on the mounting plate to secure the motor in fixed position.

MOTOR MOUNTING

PLATE NUTS

Fig. 39 — Typical Belt-Drive Motor Mounting for

Size 012

Fig. 38 — Typical Belt-Drive Motor Mounting for				Fig. 40 — Indoor-Fan Pulley Adjustment
	Size 008 and 009
		Table 9 — Fan Motor Performance
UNIT	INDOOR-FAN	UNIT	MAXIMUM ACCEPTABLE		MAXIMUM ACCEPTABLE	MAXIMUM
50TFQ	MOTOR	VOLTAGE		CONTINUOUS BHP*	OPERATING WATTS	AMP DRAW
	Standard,	208/230				6.0
		460		2.40	2120	3.0
	Alternate
008		575				3.0
		208/230				11.7
	High Static	460		3.70	3313	5.5
		575				5.5
		208/230				6.0
	Standard	460		2.40	2120	3.0
009		575				3.0
		208/230				11.7
	High Static	460		3.70	3313	5.5
		575				5.5
		208/230				6.0
	Standard	460		2.40	2120	3.0
		575				3.0
		208/230				8.6
012	Alternate	460		2.90	2615	3.9
		575				3.9
		208/230				17.3
	High Static	460		5.25	4400	8.5
		575				8.5

LEGEND

BHP — Brake Horsepower

*Extensive motor and electrical testing on these units ensures that the full horsepower range of the motors can be utilized with confidence. Using fan motors up to the horsepower ratings shown in this table will not result in nuisance tripping or premature motor failure. Unit warranty will not be affected.

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