Labconco SteamScrubbe & FlaskScrubbe Glassware Washers 44204 Series - Manual (Page 53)

Labconco Glassware Washer Service/Technical Manual
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13. If the unit doesn’t pass or alarms, follow the troubleshooting section
for that alarm.
Replacing the Pressure Switch Hose
1. Pull the unit away from the wall so that you have access to the
backside of the washer.
2. Remove the cosmetic back panel or the back service access panel.
3. Pull the black insulation jacket up and secure it.
4. Locate the Pressure Switch Hose. (Fig 20)
5. Loosen the clamp and remove the hose from the Sump connection.
6. Loosen the clamp and remove the hose from the pressure switch.
7. Place the new hose over the connection on the Sump and tighten down
the clamp.
8. Place the hose end with the grommet over the nipple of the Pressure
switch and tighten the clamp over the hose. Be careful not to crush
the grommet or snap the connector on the pressure switch!
9. Test the unit in diagnostics
a. Fill the unit in tap and check the water level and for leaks
b. Drain
c. Fill the unit with DI/Pure (if applicable) and check the level
d. Drain
10. Run a Rinse Only cycle to test for any alarms.
11. If the unit passes all tests, seat the Pressure Switch into its place.
12. If the unit doesn’t pass or alarms, follow the troubleshooting section
for that alarm.
Replacing the Wash Pump
The wash pump has been relocated in models manufactured after Sept.
2007. Previously, it has been located directly under the tank’s sump.
If diagnosis leads to replacing the wash pump, use the steps below to
guide your way
.
Figure 20
Bottom: Pressure Hose on Sump. The Hose fills with water from
the sump to actuate the pressure switches contacts.
Right: Pressure Hose at Switch. The hose transfers the pressure of
the filling sump to the switches actuator so long as the system
remains sealed. This is accomplished by air tight clamping on the
pressure hose connectors.