Honeywell Modutrol IV 90 Series Manual page 6

SERIES 90 MODUTROL IV
Mounting
CAUTION
Equipment Damage Hazard.
Can damage the motor beyond repair.
Always install motors with the crankshaft horizontal.
Improper motor mounting can result in inadequate
motor gear train lubrication.
Use the following guidelines for proper motor mounting:
• Always install motors with the crankshaft horizontal.
• Mounting flanges extending from motor housing base are
drilled for 1/4 inch (6.4 mm) machine screws or bolts.
• Non-Spring Return Motors are shipped from the factory in
the closed position (at the limit of counterclockwise rotation,
as viewed from the power end of the motor).
• Spring Return Motors are shipped from the factory in their
normal position:
— Normally closed models: shipped at limit of counter-
clockwise rotation, as viewed from the power end of the
motor.
Adapter Bracket
The 220738A Adapter Bracket, positioned between the motor
and the equipment, raises motor shaft height by 0.75 in.
(19 mm) to match that of the former Modutrol Motor.
The following applications require this bracket:
• Q607 External Auxiliary Switch.
• Damper linkage applications require added clearance to
allow:
— crank arm rotation through the downward
position.
— sufficient damper linkage to reach the motor shaft.
• All valve linkages except the Q5001.
63-2631—07
™
MOTORS
To mount the motor with the bracket (See Fig. 3):
1. Mount the bracket to the equipment with existing or stan-
dard bolts.
2. Using the provided bolts, mount the motor to the bracket
threaded holes.
For valve linkage applications (other than the Q5001):
1. Mount the bracket to the linkage.
2. Position the motor on the bracket to align the motor shaft
with the linkage.
3. Attach the motor to the bracket with the four bolts pro-
vided (See Fig. 4).
Damper Linkages
The motor does not include a crank arm. Order the crank arm,
included in the Q605 Linkage, separately (refer to Accessories
in the Specifications section). For detailed instructions on the
assembly of specific linkages, refer to the instruction sheet
packed with the linkage.
CAUTION
Equipment Damage Hazard.
Stalling a motor can damage the drive shaft.
Ensure installation of motors and linkages allows the
motor to drive through full stroke without obstruction.
Valve Linkages
The Q100 Linkage requires the 220738A Adapter Bracket for all
valve applications. Applications with the Q5001 Valve Linkage
do not require the 220738A Adapter Bracket (Refer to Fig. 3).
Junction Box
When used with liquid-tight conduit connectors, the junction
box provides NEMA 3 weather protection for the motor. The
junction box, standard with replacement motors, encloses the
terminals and provides knockouts for wiring conduits. Housing
an internal transformer or internal auxiliary switches requires
use of the junction box.
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