CHAMPION USN72 - Manual (Page 57)

Part 5: BASIC SERVICE
5.2 General Troubleshooting (Cont.)
39
CONDITION CAUSE SOLUTION
Insufficient pumped Clogged pump intake screen ................. Clean pump intake screen
spray pressure Clogged spray pipe ............................... Clean spray pipe
Scrap screen full of debris .................... Must be kept clean and in place
Low water level in tank ........................ Check drain valve(s)
Pump motor rotation incorrect Refer to Part 3.3, Start-up Procedure,
Steps 21-23, page 24
Defective pump seal.............................. Refer to Repair Procedure 5.3.14
Spray pipe end plug missing ................. Replace missing end plug
Spray pipe O-ring missing .................... Replace missing O-ring
Wash restrictor needs adjustment ......... Refer to Repair Procedure 5.3.13
Insufficient final rinse Faulty pressure reducing valve ............. Refer to Repair Procedure 5.3.1
or no final rinse Improper setting on pressure................. Correct pressure setting is 20-22 PSI
reducing valve
Clogged rinse nozzle and/or pipe..........
Clean pipe/nozzles
Clogged line strainer ............................. Clean screen or replace line strainer
Defective final rinse switch .................. Refer to Repair Procedure 5.3.15
Defective final rinse solenoid valve...... Refer to Repair Procedure 5.3.4
Low final rinse Low incoming water ............................. Increase incoming water temperature
temperature temperature 110 ° F minimum for 70 ° rise booster
140 ° F minimum for 40 ° rise booster
Booster steam supply shut off ............... Turn on steam supply
Booster water supply shut off ............... Turn on water supply
Rinse nozzle or pipe cap missing Replace missing part
Defective final rinse thermostat ............ Refer to Repair Procedure 5.3.9
Defective thermometer ......................... Refer to Repair Procedure 5.3.7
Low steam pressure .............................. Correct steam pressure is 15-30 PSI
Defective steam solenoid valve ............ Refer to Repair Procedure 5.3.4
Defective steam trap ............................. Refer to Repair Procedure 5.3.11
Poor washing results Detergent dispenser............................... Check dispenser
not operating properly
Insufficient detergents...........................
Refill containers
Wash water temperature ....................... See condition “Tank(s) water
too low temperature is low when in use”
Wash arm clogged ................................ Clean
Improperly scraped dishes .................... Check scraping procedures
Ware improperly placed in rack............ Use proper racks. Do not
overload racks
Drain-Overflow(s) clogged ................... Check overflow tubes
debris not skimmed from tank(s) ..........
Wash water not drained at specified .....
Drain tanks every two hours
intervals or after each meal period.
Conveyor not moving Drive motor V-belt broken ................... Replace drive belt
dishracks Conveyor chain needs adjustment ........ Refer to Repair Procedure 5.3.16
Conveyor shaft bearings defective Refer to Repair Procedure 5.3.17
and Repair Procedure 5.3.18