SPX Cooling Technologies MH Fluid Cooler User Manual page 27

Figure 4
maintenance
See Figure 4 and Figure 5 for MH Fluid Cooler models MHF7103 thru
MHF7107 for single motor with two fans. The belts are adjusted by turning
the two acme bolts clockwise to tension the belts, keeping the motor plate
square to the wall. Before tightening or loosening the belts loosen the four
motor to motor plate bolts. Do not remove the hardware. Next loosen the
four motor plate to side gusset bolts. Do not remove the hardware. It may
help to grease three radial motor slots before turning the adjustment bolts.
If one belt is looser than the other, the motor should rotate in the greased
slots until the tension is approximately equal. After achieving proper tension
tighten the hardware.
SINGLE MOTOR—TWO FANS. MHF7103 THRU MHF 7107 ONLY.
Fastener Torque at Motor Only
Machine Bolt
Size
10mm
12mm
16mm
20mm
MHF7103 THRU MHF7107 ONLY. NON-LUBRICATED
LOOSEN HARDWARE
ACME BOLT
MOTOR
SIDE GUSSET
Galvanized
ft·lb N·m
ƒ
30-32 42-43
64-66 87-91
135-140 183-190 125-130
220-230 298-312 195-205
Stainless
ft·lb N·m
ƒ
34-36 46-48
85-90 115-122
169-176
264-278
➠
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