User Guide

SERIES 41 AND 81 MODUTROL IV™ MOTORS
5 63-2627
Fig. 3. Mounting the motor with an adapter bracket.
Damper Linkages
Use of the 220738A Adapter Bracket is optional for many
damper applications. This bracket or a 221455A Crank Arm
might be needed in applications that require the crank arm to
rotate through the motor bottom plane.
NOTE: Replacement applications where the shaft height
changes require damper linkage adjustment.
The motor is supplied without a crank arm. The crank arm is
included in the Q605 Linkage or can be ordered separately
(see Accessories in the Specifications section).
For detailed instructions on specific linkage assembly, refer to
the instruction sheet packed with the linkage. In general,
however, check the following points of operation when
installing a motor and linkage:
— The motor must be permitted to complete its full stroke.
Damper or valve induced motor stall can damage the motor.
Adjust valve and louver-type damper linkages so that the
damper or valve moves through no more than the maximum
required distance when the motor moves through its full
stroke.
— Maximum damper opening should be no more than 60°.
Little additional airflow is provided beyond this point.
— Do not exceed the motor ratings in any installation.
— Do not turn the motor shaft manually or with a wrench.
This damages the motor.
Valve Linkages
Use the 220738A Adapter Bracket with the Q100 Linkage in all
valve applications. The 220738A Adapter Bracket is not
required with the Q5001 Valve Linkage (see Fig. 4).
Fig. 4. Mounting the motor on a Q5001 valve linkage.
EQUIPMENT
BASE
ADAPTER
BRACKET
STANDARD
BOLTS (4)
MOTOR
BOLTS
PROVIDED (4)
WIRING
BOX
1 #12 OR 1/4" ZINC PLATED
MACHINE SCREWS OR BOLTS
1
POWER
END
POWER
END
M18993
1/4-20 UNC
1 in. LONG
MOUNTING
BOLTS
Q5001
VALVE
LINKAGE
M18994
MOTOR
JUNCTION
BOX
POWER
END OF
MOTOR
VALVE