Refrigeration; Water System - Scotsman MVP456 Service Manual

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REFRIGERATION

Refrigerant: R-404A
Compressors: Copeland or Tecumseh hermetic
by model
Expansion valves: Non adjustable, internally
equalized.
Hot gas valve: Pilot operated, line voltage coils.
Condensers: Forced draft air, counterflow water.
All air cooled models have left side air inlet.
All air cooled models exhaust air out the back.
Air filters: Surface mounted to left side panel.
Filter media removable without removing panel.
Fan blades: Reduced vibration blades in most
air cooled models.
Fan pressure control. All AC. Controls fan
motor operation in the freeze cycle.
High pressure cut out. WC, AC.
Evaporator: Unified cell plate. Nickel plated
copper. Two heights: 12" and 18". Small cube =
half dice, medium cube = full dice.
Small cube: 22 mm high x 22 mm deep x 9,5 mm
high (7/8" high x 7/8" deep x 3/8" high).
Medium cube: 22 mm high x 22 mm deep x
22 mm high (7/8" high x 7/8" deep x 7/8" high).

WATER SYSTEM

Batch type. Water reservoir contains full water
charge for each ice making cycle.
Water valve: Solenoid type. Opens to fill reservoir
when mid sensor probe no longer makes a circuit
to the bottom probe. Closes when reservoir is full
and top probe makes circuit to mid probe.
Pump: Unsealed pedestal type, S.S. side
mounting bracket
Water purge valve: Solenoid type. Opens to
purge water during harvest cycle.
Water Level Sensor: Three probe conductivity.
Distributor: ABS plastic. Evenly distributes water
over the evaporator surface. Slides off the
evaporator top. Removable cover for ease of
cleaning.
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