Malmet WDF-3020, Operation, Maintenance And Installation Manual

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Front Loading Utensil Washer Disinfector (WDF)
Operation, Maintenance and Installation Manual
Issue 1 Page 14 20/01/2022
Operator resettable faults c
ont’d
Door lock Error
On pressing the start button to commence a cycle, the machine will lock the door. If the door lock is not successfully
engaged a fault will be triggered. The display will show:
Fault 01 – Door Lock Error
The device will perform a drain step, once completed the display will cycle between:
Bump Door Closed Press Start
Check that the door is fully closed, once done press Start again. The device will attempt to engage the lock and start the
cycle. If successful, cycle will commence; if unsuccessful device will remain in the fault condition. After 5 attempts, if the
device is unable to successfully prime it will lock out any further priming attempts and require service intervention to
rectify.
5.3 Fault list
The operation of the Malmet Front Loading Utensil Washer Disinfector is controlled by a micro-processor. The processor
has fault detection capability and indicates faults by code on the LCD display
Fault 01 Door Lock Error
(No lock signal detected when door lock engaged)
Cause

Door not shut completely

Lock out of alignment

Lock position switch faulty

Lock solenoid failed
Fault 03 Detergent Empty
(No detergent detected during dosing)
Cause

Detergent container empty or suction hose not immersed in chemical

Detergent suction foot valve blocked or jammed

Flow meter blocked or impellor jammed

Non-approved detergent used

Detergent pump squeeze tube broken

Detergent pump failed

Flow meter failed
Fault 04 Rinse Aid Empty (Where Fitted)
(No Rinse Aid detected during dosing)
Cause

Rinse Aid container empty or suction hose not immersed in chemical

Rinse Aid suction foot valve blocked or jammed

Flow meter blocked or impellor jammed

Non-approved detergent used

Rinse Aid pump squeeze tube broken

Rinse Aid pump failed

Flow meter failed
Fault 06 Hot Fill
(Incoming water temperature for Cold Wash above 45°C)
Cause

Incoming water supply is too hot/incorrectly connected to hot water
c
Machine Fault
F01 Door Lock Error
3:06PM 21/6/21
Please Wait…
c
Machine Fault
F03 Deterg. Empty
3:06PM 21/6/21
c
Machine Fault
F01 Door Lock Error
3:06PM 21/6/21
Bump Door Closed
c
Machine Fault
F01 Door Lock Error
3:06PM 21/6/21
Press Start