Table 2-2. Unit Troubleshooting-continued
TEST OR INSPECTION
RO. PUMP ASSEMBLY
PUMP DRIVE BELTS FRAY AFTER SHORT USE OR BREAK FREQUENTLY.
(MODELS WPES-10, WPES-20 AND WPES-30 ONLY)
R.O. pump drive belts must be replaced as a set. Replacement of less than complete set
will overstress new belts and result in shortened life.
Check R.O. pump and pump motor sheaves for cracks, chips, burrs, or bent grooves which may damage belts.
If sheaves are detective, replace sheaves. Refer to Paragraph 2-66.
Run R.O. pump and check if sheaves wobble.
If sheaves wobble, continue with step 3.
If sheaves do not wobble, go to step 4.
Check for loose or missing sheave mounting hardware.
Replace and/or tighten hardware as necessary. If sheaves continues to wobble, replace them (Paragraph 2-66).
Check sheave alignment. Refer to paragraph 2-66.
If sheaves are out of alignment, align sheaves. Refer to Paragraph 2-66.
Step 5. Check belt tension. Refer to paragraph 2-66.
Adjust belt tension if too loose or too tight. Refer to Paragraph 2-66.
2-30 Change 1