Flow HYPLEX, Manual, Page: 92 / 100

5. Turn the nut on the tension bar CW until there is
tension on the belts.
6. Use the belt tension gauge to determine correct ten-
sion on one of the belts.
Note: This step is for verifying tension only. Perform
this step before loosening any hex nuts.
a. Place the gauge in the center of the belt midway
between pulleys, and align the sides of the
gauge parallel to the edges of the belt.
b. Push slowly on the colored pad with a force
perpendicular to the belt to get an accurate
reading. When you hear a click, immediately
stop pressing and carefully remove the gauge.
Note : Only the pad of the tool must be touched
during measurement.
c. Turn the gauge sideways to see the exact spot
where the top of the indicator arm intersects the
scale.
d. Take more than one reading to assure repeat-
able measurements.
7. Turn the nut on the tension bar CW to increase ten-
sion or CCW to decrease tension. Tension should be
set between 100 and 110 lbs (445-489 N). Refer to
drawing 049785.
When the tension is correct:
8. Use a 3/4 in. socket to torque the three flanged nuts
not attached to the tension bar to the appropriate
torque value in the table below. Do not tighten the
flanged nut that attaches the tension rod end to the
housing.
30 hp 50 hp
75 ft-lb (102 N-m) 125 ft-lb (170 N-m)
9. Remove tension from the tension bar nut. Torque
the final (the fourth) flanged nut to the appropriate
torque value.
10. Tighten the nut on the tension bar to 15 ft-lb
(20 N-m).
11. Reinstall the belt guard.
Remove the “Out of Service” tag from the main electrical
disconnect and make final inspection to remove tools,
parts, and rags from the equipment. The pump is ready
for operation.
92 | M-416
© Flow International Corporation
HYPLEX PRIME PUMP
Maintenance & Service Manual