Manitowoc P Series - Page 7

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Table of Contents
Table of Contents (cont.)
Section 5 - Before Calling for Service
Checklist............................................................................................................................................................5-1
Safety Limit Stand-By Mode...........................................................................................................................5-2
Section 6 – Service
Energized Parts Chart.....................................................................................................................................6-1
Main Fuse..........................................................................................................................................................6-2
Bin Switch .........................................................................................................................................................6-2
Toggle Switch....................................................................................................................................................6-4
Harvest Heater Element ..................................................................................................................................6-4
Harvest Heater Element Thermostat .............................................................................................................6-5
Low Pressure Control......................................................................................................................................6-5
Suction Solenoid valve .....................................................................................................................................6-6
Line Set Isolation valves ..................................................................................................................................6-6
Evaporator removal.........................................................................................................................................6-7
Control Board...................................................................................................................................................6-8
Safety Limits.....................................................................................................................................................6-9
Ice Thickness Probe (Harvest Initiation)
How the Probe Works................................................................................................................................6-12
Harvest/Safety Limit Light........................................................................................................................6-12
Freeze Time Lock-In Feature....................................................................................................................6-12
Maximum Freeze Time..............................................................................................................................6-12
Ice Thickness Check...................................................................................................................................6-12
Diagnosing Ice Thickness Control Circuitry
Ice Machine Does Not Cycle Into Harvest ........................................................................................6-13
Ice Machine Prematurely Cycles Into Harvest .................................................................................6-14
Water Level Control Circuitry
Water Level Probe Light...........................................................................................................................6-15
Freeze Cycle Water Level Setting.............................................................................................................6-15
Water Inlet Valve Safety Shut-off ............................................................................................................6-15
Freeze Cycle Circuitry...............................................................................................................................6-15
Harvest Cycle Circuitry.............................................................................................................................6-15
Diagnosing Freeze Cycle Potable Water Circuitry
Water Trough Overfilling During The Freeze Cycle........................................................................6-16
Water Will Not Run Into The Sump Trough During The Freeze Cycle.........................................6-18
Wiring Diagram................................................................................................................................................6-19
Tubing Schematic.............................................................................................................................................6-20
24 Hour Production Graphs
P520/P530....................................................................................................................................................6-21