Page No.
Float Valve (Make-Up Water).......................................................................................................................................9-1
Float Switch...................................................................................................................................................................9-1
P24AL and P34AL Float Height, Figure 9-1.................................................................................................................9-2
Hand Expansion Valve..................................................................................................................................................9-2
Freeze Timer..................................................................................................................................................................9-2
Miniature Rocker Switch Settings for Freeze Timer, Table 9-1 ....................................................................................9-3
Entering and Displaying Set points ...............................................................................................................................9-3
Freeze Timer, Figure 9-2 ...............................................................................................................................................9-4
Freezer Pressure Switch (optional)................................................................................................................................9-4
Freezer Pressure Switch, Figure 9-3..............................................................................................................................9-5
Control Circuit Protection .............................................................................................................................................9-5
Thawing Timer ..............................................................................................................................................................9-5
Thawing Timer, Figure 9-4............................................................................................................................................9-6
Suggested Condenser Cleaning .....................................................................................................................................9-6
Cutter Gear Reducer......................................................................................................................................................9-7
Drive Gear Replacement................................................................................................................................................9-7
Gear Reducer Replacement............................................................................................................................................9-8
Water Tank and Cutter Parts Weights, Table 9-2 ..........................................................................................................9-9
Water Tank Removal.....................................................................................................................................................9-9
Cutter Assembly Removal and Installation....................................................................................................................9-9
Bearing Bracket and Cutter Disc Removal ....................................................................................................................9-10
Cutter Shaft and Bearing Removal ................................................................................................................................9-10
Cutter Shaft and Bearing Installation.............................................................................................................................9-10
Cutter Height Adjustment..............................................................................................................................................9-11
Water Tank Installation .................................................................................................................................................9-12
P24A Cutter Assembly, Figure 9-5A.............................................................................................................................9-12
P24A Water Tank Assembly, Figure 9-5B ....................................................................................................................9-13
P24A and P34A Cutter and Water Tank Part Nos.........................................................................................................9-14
Cutter Ring Gear Replacement......................................................................................................................................9-15
Cutter Blade Replacement .............................................................................................................................................9-15
Cutter Blade and Adapter Plate Adjustment, Figure 9-6 ...............................................................................................9-16
Cutter Adapter Plate Installation....................................................................................................................................9-18
Pumpdown.....................................................................................................................................................................9-16
Removal of Ammonia Refrigerant from the Machine....................................................................................................9-17
Refrigerant Leaks...........................................................................................................................................................9-17
Non-Condensable Gases................................................................................................................................................9-18
Purging Non-Condensables...........................................................................................................................................9-18
Draining the Oil Trap.....................................................................................................................................................9-19
Removing Excess Water from Ammonia.......................................................................................................................9-19
Circulating Water Pump Motor .....................................................................................................................................9-20
The Thaw Gas Solenoid Valve ......................................................................................................................................9-20
Thaw Gas Solenoid Valve, Figure 9-7...........................................................................................................................9-21
The Liquid Feed Solenoid Valve...................................................................................................................................9-21