Belt Tensioning - SPX Cooling Technologies MH Fluid Cooler User Manual

Caution
Figure 1
maintenance

Belt Tensioning

Any bolts loosened or removed functioning as mechanical or struc-
tural hardware should be replaced with the torques specified below.
Anti-seize compound is recommended for stainless steel hardware
Machine Bolt
Size
8mm
10mm
12mm
16mm
20mm
See Figure 1 and Figure 2 for model MHF705. Loosen specified hard-
ware located at the top and bottom of the motor support assembly before
adjusting the jacking screws. Do not remove the hardware—it is re-
quired to support the motor. Tighten the hardware after adjustment.
Ideal tension is the lowest tension at which the belt will not slip under
peak load conditions. Check tension frequently during the first 24-48
hours of run-in operation. Over tensioning shortens belt and bearing life.
Keep belts free from foreign material which may cause slipping. Never
JACKING
SCREWS
SINGLE MOTOR—TWO FANS. MHF705 ONLY.
Fastener Torque Values
Galvanized
ft·lb N·m
ƒ
8 10
15 20
25 35
65 85
125 170
LOOSEN HARDWARE
MOTOR
Stainless
ft·lb N·m
ƒ
15 20
30 40
50 65
120 160
230 315
25