Greenheck Fan 41, 81 specifications Settings and Adjustments, Stroke Setting, Before Setting Stroke

SERIES 41 AND 81 MODUTROL IV™ MOTORS

MOTOR THERMOSTAT LIMIT CONTROL

1

1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M806A

Fig. 6. Typical connections for Series 41 Motors.

MOTOR THERMOSTAT LIMIT CONTROL

TRANSFORMER

1

1 POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED.

M807A

Fig. 7. Typical connections for Series 81 Motors.

	MOTOR	MOTOR
1	STARTER

BLOWER

1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M808A

Fig. 8. Power connections for Series 41 Line Voltage Motors controlling two-position outside air dampers.

MOTOR	24V
STARTER	MOTOR
1
	TRANSFORMER

BLOWER

1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M809A

Fig. 9. Power connections for Low Voltage Motors controlling two-position outside air dampers.

MOTOR	24V
STARTER	MOTOR
1
	TRANSFORMER

BLOWER

1POWER SUPPLY. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. M809A

Fig. 10. Wiring connections for Series 81 Motors controlling two-position pre-heat coil valves.

SETTINGS AND ADJUSTMENTS

Stroke Setting

On adjustable stroke motors, the stroke is field adjustable and can be set between 90° and 160°. A mechanical adjustment (cam) establishes the fully open (clockwise, viewed from the power end) and fully closed positions of the motor shaft (see Fig. 2). TRADELINE motors are factory set for 160°.

IMPORTANT

—Detach linkage from motor before adjusting stroke.

—Instructions are for normally closed models. Reverse for normally open.

Before Setting Stroke

1.Remove top cover from motor.

2.Disconnect controller from motor.

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