START UP PROCEDURE
Before starting the machine, make sure the machine is level within 1/8 inch in all directions, the bin
or dispenser leg height can be adjusted by rotating the leg foot.
Check the water level in the water trough. It should be approximately ½ inch above the top of the
water pump impeller housing. The water level can be adjusted by bending the float arm.
Move the ICE-OFF-WASH switch to the ICE position. The switch is located in the control box.
Remove the ice machine front panel or remove the lower grill on the under counter models to
access the control box.
Check for proper water flow over the evaporator(s). There should be an even flow of water over
the evaporator(s).
Check the water regulating valve (water cooled machine) for proper adjustment by measuring the
discharge pressure which should be adjusted to maintain 250 psi (17.01 bar / 1.723 MPa). Adjust
the water regulating valve as required. Water exiting the condenser should be between 100°F
(38°C) and 110°F (43°C).
As ice begins to form on the evaporators, check the freeze pattern of the ice. Ice should form
evenly across the evaporator.
Bridge Thickness and Timer Adjustment
Once the unit has gone through 1 or 2 harvest cycles, verify that the ice production is per the
chart below.
Model
Batch Weight
UIM-240FA, UIM-300FA
3.2 – 3.5
As a reference, when ice drops off the evaporator(s) during harvest, check the bridge thickness of
the ice slab. The bridge should be approximately 3/16 of an inch on Undercounter, UIM-240FA and
UIM-300FA units. The bridge should be approximately 1/8 of an inch on all other units. If the batch
weight or bridge thickness is incorrect, the timer will need to be adjusted.
Both the Ice Batch Weight and Bridge Thickness are controlled by the freeze timer located in the
control box. To check the timer setting, add the seconds of each dipswitch turned to the “ON”
position. The number beside the each dipswitch represents seconds. To increase the Batch Weight
and bridge thickness, increase the timer setting. To decrease the Batch Weight and bridge
thickness, decrease the timer setting. The freeze timer can be adjusted by sliding one or more
switches to either the “ON” or “OFF” position to obtain the desired setting.
© Supera
September 2015
9
