Labconco Glassware Washer Service/Technical Manual
28
Diagnostic Fill
Water fill during cycles is timed. If the pressure switch doesn’t read full
in 3 minutes (tap) or 5 minutes (DI) the fill valve times out and will go
into “Drain/Cancel” with Water Low Alarm. Knowing the timing of the alarm
will help us diagnose what is causing the problem.
1.
Go into the diagnostics menu by opening the door latch, then push and
hold the
▲
button while simultaneously closing the latch. Release the
▲
button when the startup screen appears.
2.
If there is water in the tank scroll down by pressing the
▼
button to
“drain pump” and then use either the
◄
or the
►
button to get to “yes”
and drain out the remaining water.
3.
Scroll back up by using the
▲
button to “tap fill” and again use either
◄
or the
►
button to get to “yes” and time how long it takes for the
water to fill and shut off. (the fill timer is not engaged in
diagnostics)
4.
Let the machine fill until it stops on its own. When it has finished
filling, open the tank to check the water level. It should contact the
lower half of the
Sump Heater Element (Fig 26).
(Water should not
completely cover the heater)
5.
The following indicates your next step.
o
If it filled appropriately but took longer than 3 minutes check
the supply water pressure and the inlet valve for obstructions.
SEE “Clogged Fill Valve”
o
If the fill stopped prior to 3 minute mark but filled above the
heating element, then the pressure switch needs adjustment.
SEE
“Pressure Switch Adjustment”
Clogged Fill Valve
Both the hot tap and DI water inlet valves are located on the washer assembly
base in the back left of the unit.
1.
Turn off supplied water source valves.
Figure 1:
Above Left: Interior Door:
Door with window. Circle A indicates location of door latching mechanism and
power switch to be triggered for override.
Above Right: Door Switch Override:
The red circle shows the rectangular hole in the inside top of the door
where the door switch can be triggered for going through prescribed diagnostic tests with the door open. The Blue
Arrow is pointing to the Door Latch.
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