Bedpan / Urinal Bottle and Utensil / Bowl Washer Disinfector (WDS)
Operation, Maintenance and Installation Manual
Issue 16 Page 32 August 22
Steam water level timeout
Water leakage, steam fill solenoid failed, steam
level sensor failed, blocked inlet hose
Steam water low level during heatup
Water leakage, steam fill solenoid failed, steam
level sensor failed, blocked inlet hose
Steam water temperature high
Faulty temperature sensor, faulty heater relay,
faulty contactors
Faulty steam heater element, faulty steam
heater relay, heater circuit breaker tripped,
over temp switch tripped. Faulty temp probe,
faulty contactors. Panel lockout switches J8
open circuit, door interlock switch J11 J10,
leaking 4 – way solenoid valve.
Disinfect water low level
Water leakage, , steam level probe failed
Disinfect water temperature high
Faulty temperature sensor, faulty heater relay,
Faulty contactors
Faulty steam heater element, faulty steam
heater relay, heater circuit breaker tripped,
over temp switch tripped. Faulty temp probe
chamber steam outlet, faulty contactors.
Blocked condenser coil. Blocked mesh on
steam outlet, panel lockout switches J8 open
circuit, door interlock switch J11 J10
Differential between control and validation
temp probes has exceeded tolerance.
Low water level during wash
Low pump water flow, blocked spray nozzles,
faulty solenoid, panel lockout switches J8 open
circuit. Faulty level probe. Incorrect spray
nozzles fitted
Door opened when attempting pure rest, faulty
door interlock switch J11 J10
Pump run without solenoid
Check cycle times parameters, faulty solenoids
Timeout before level reached
Low pump water flow, blocked spray nozzles,
faulty solenoid, panel lockout switches J8 open
circuit. Faulty level probe. Door interlock
switch J11 J10
Dirty conductivity sensor probe, faulty
connections, faulty conductivity module
Water level sensor failed or water supply low
flow, water fill solenoid failed, water supply off
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