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