Howe HoweIce Rapid Freeze 4000-RL-CO 2DX, Installation & Service Manual

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Solenoid Valve
The Solenoid Valve controls the flow of liquid
refrigerant to the Evaporator.
The Solenoid Valve should energize
immediately upon starting the Ice Flaker.
The solenoid should only de-energize when the
Ice Flaker is in Off-Delay Cycle (p. 17) or
Overload Condition (p. 18).
Electronic Valves
CO
2
systems feature two step motor operated
valves. Each valve has its own standalone
controller. The controllers are located in a
control panel mounted to the upper left hand
corner of the flaker enclosure frame. The
controllers come factory set for the
recommended settings, therefore no
adjustment should be required
The Electronic Expansion Valve (EEV) controls
the flow of liquid refrigerant into the
evaporator.
The Electronic Evaporator Pressure Regulator
(EEPR) valve will hold the suction temperature
at the proper level.
For more information on the controller settings,
view the section under Electrical Operation.
Internal Pressure Relief Valves
The Internal Pressure Relief Valves will relieve
any excess pressure from the evaporator to the
rack.
Field Capacity Check
The Ice Flaker is a continuous production
machine and makes ice at a steady rate once
stabilized.
A Capacity Check confirms the Ice Flaker and
refrigeration settings are correct.
1. Choose an appropriately sized container
and weigh it while empty.
Container Weight Lbs.
2. Run the Ice Flaker for 10 minutes.
3. Position the container below the
opening of the Ice Flaker.
4. Catch the falling ice in the container for
exactly 15 minutes. Be sure that the
container catches all of the ice.
5. Weigh the ice and the container
together in pounds using an accurate
scale. Do not drain before weighing.
Measured Weight Lbs.
6. Subtract the weight of the container.
Measured Weight (from #5)
- Container Weight - (from #1)
= Calculated Weight = Lbs.
7. Calculate the capacity by multiplying
the calculated weight by 96.
Calculated Weight
(from #6)
x 96 x 96
= Capacity = Lbs. per
24 hrs.
8. Compare the number with the rated
capacity of the Ice Flaker. Keep in mind
temperatures outside the rated
conditions will have an effect on the
capacity.