Table 2-2. Unit Troubleshooting - continued
TEST OR INSPECTION
CHEMICAL FEED METERING PUMP ASSEMBLY - continued
PUMP FAILS TO OPERATE (ALL DIAPHRAGM PUMPS)
High voltages in this equipment can cause serious injury or death When applying power during a
test, take proper measures to ensure personal safety. Never work on electrical equipment unless
there is another person nearby who is familiar with the operation and hazards of the equipment
and who is competent in administering first aid
Step 1.Check if CB7 and/or K7 heater assembly injunction box are tripped.
If either, CB7 or K7 heater assembly is tripped, go to step 3.
Check for 208 VAC on K7 heater assembly ouptput terminals injunction box Check between T1 and
If 208 VAC is not measured, notify Direct Support Maintenance.
Disconnect pump power cable assembly at booster pump and heater output terminals, T1 and T4 and
b. If cable assembly is defective, notify Direct Support Maintenance.