TM 10-4610-239-24
TM 08580B-24/3
Table 2-2. Unit Troubleshooting - Continued
Malfunction
Test or Inspection
Corrective Action
CHEMICAL FEED METERING PUMP ASSEMBLY - Continued
1. PUMP FAILS TO PRIME - Continued
Step 3.
Remove three-way ball valve. Refer to paragraph 2-114. Set valve to PRIME position
and pour water into flexible tubing fitting that was connected from the prime valve
fitting to the chemical container.
If water comes out of other hose fitting that was connected to chemical container,
replace chemical feed metering pump. Refer to paragraph 2-114. Install three-way
ball valve. Refer to paragraph 2-116.
If water does not come out of other hose fitting that was connected to chemical feed
metering pump, replace three-way ball valve. Refer to paragraph 2-116.
2. INADEQUATE FLOW OF ONE OR MORE CHEMICALS
Step 1.
Check chemical containers for chemical levels.
If chemical levels are adequate, go to step 2.
If any chemical level is inadequate, fill chemical containers.
Step 2.
Check for leaks at hoses and three-way valves.
If there are no leaks, replace chemical feed metering pump. Refer to paragraph 2-
114.
If hose leaks, replace faulty hose. Refer to paragraph 2-116.
If valve leaks, repair faulty valve. Refer to paragraph 2-116.
3. PUMP ASSEMBLY IS NOISY DURING OPERATION
Step 1.
Check that chemical feed metering pump assembly is secured to ROWPU frame.
If pump assembly is secure, go to step 2.
If pump assembly is not secure, secure pump assembly.
Step 2.
Check that motor is secured to metering and drive assembly.
If motor is not secure, secure motor.
If motor is secure, replace chemical feed metering pump metering and drive
assembly. Refer to paragraph 2-114.
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