Semi-Annually; Water Level Control; How Water Level Control Works; Purpose - Cornelius UCR 700 Series Installation & Service Manual

SEMI-ANNUALLY

Semi-Annually in addition to all previously established service procedures perform the following:
1. Check for water leaks in tube connections, water fittings and lower Icemaker water seal.
2. Check drain tubes for clogs and aged tubes. Replace if tubes are stained or brittle.
3. Check for signs of condensation. Clean where necessary and replace insulation properly.
4. Check safety circuits for proper operation.
5. Check refrigeration system (see page 11).
6. Check unit for abnormal noise. Tighten machine and cabinet screws, if necessary.
7. Check white upper bearings on auger assembly. If bearings are less than 1/16'' thick, replace. See Figure 4
W L C
ATER EVEL ONTROL

HOW WATER LEVEL CONTROL WORKS

When water is introduced through the inlet fitting the float rises. the float pushes against a lever which in turn forces
the poppet assembly against the inlet fitting valve seat which seals the water off. SeeFigure 3 Before the water inlet
is sealed the safety switch is operated. In the event of a water failure the float would drop down and operate the
safety switch to shut off the machine.
If water level control will not shut off and seal at level as indicated, be sure inlet pressure does not exceed
recommended factory operating range.
Under ordinary circumstances adjustment should not be necessary providing it was properly adjusted when unit
was installed or relocated. If, however, the control becomes inoperative, repair or replace. See Start-Up
Adjustment, page 9.

PURPOSE

1. To automatically maintain proper water level in the evaporator when unit is running and making ice.
2. A safety switch is operated in the event of an interruption in water supply. The switch shuts off the electrical
power to the icemaker and its refrigeration system. Switch will reset as soon as cause of water failure has
been corrected and proper water level in icemaker has again been reached.
3. The transparent bowl not only provides a visible check of water level, but also is a good guide to the inter-
nal conditions which exist within the icemaker assembly itself. (See Cleaning Procedure.)
© 2001-2012, IMI Cornelius Inc.
UCR 700 Series Continuous Flow Icemaker Installation/Service Manual
OK
1/16"
Replace
Figure 4. Upper Nut and Bearing Assembly
Replace
1/16"
- 10 -
OK
Publication Number: 630460154