Table 2-2. Unit Troubleshooting - continued
TEST OR INSPECTION
PUMP DRIVE BELTS FRAY AFTER SHORT USE OR BREAK FREQUENTLY.
R 0. pump drive belts must be replaced as a set. Replacement of a single belt will overstress new
belt and result in shortened life.
Check R O pump and pump motor sheaves for cracks, chips, burrs, or bent grooves which may
If sheaves are good, go to step 2.
File burrs and sharp edges, and smooth with emery cloth. If damage cannot be repaired, notify
Direct Support Maintenance.
Run R.O pump and check if sheaves wobble.
If sheaves do not wobble, go to step 3.
If pump or pump motor sheave wobbles, notify Direct Support Maintenance.
If sheave alinement is good, go to step 4.
PUMP IS NOISY.
Check that motor is secured to mounting plate.
If motor is secure, go to step 2.
If motor is not secure, secure motor.