Washtech 3 Series - Page 12

Troubleshooting Chart
PROBLEM POSSIBLE CAUSES REMEDY (Check/Adjust/Replace)
Rinse Arms
Not rotating Rinse jets not clean Rinse jets
Arm bushes worn Bushes
Water supply pressure low Water supply
Rinse pump not working (if fitted) Rinse pump (if fitted)
Cycle start
Does not start Not up to temperature Give machine reasonable time initially
Rinse thermostat faulty Rinse thermostat
Door switch faulty Door switch
Cycle finish
Rinse doesn’t stop Solenoid jammed open Solenoid valve
Timer stuck Timer
Pressure switch faulty Pressure switch
Wash continues Timer jammed Timer / Timer motors
Noise
Noisy rinse cycle Rinse pump squeals Low pressure / blocked water supply
Noisy wash cycle Wash pump noisy Wash pump including inlet filter
Cycle
Cycle too long Timer faulty Timer / Timer motors
Performance
Poor wash result Detergent not used Use quality low foam product
Detergent pump faulty Detergent pump
Overloading racks Do not overload racks
Not pre-rinsing Use Fisher pre-rinse
Wash arms not rotating Remove and clean arms/check
bushes
Wash jets blocked Remove arms and clean jets
Wash temperature low Check wash heating
Excessive soiling Pre-rinse / use long cycle
Unrealistic expectation E.g. baked on soiling requires pre-
soaking
Poor rinse results Rinse jets blocked Remove arms and clean jets
Rinse arms not turning Remove arms, clean jets, check
bushes
Poor racking procedures Do not overload racks
Excessive wash tank soil build up Pre-rinse, change wash water
regularly
Not drying Poor wash/rinse performance Refer above
Low temperatures Check heating systems
Drying agent not used Use quality drying agent/rinse fluid
Service Manual M1-3 (W) 12 Revision 1B