Vogt Tube-Ice P-24A, Service Manual

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P24AL & P34AL Service Manual
TABLE OF CONTENTS
5/31/11
ii
Page No.
Cooling Tower ...............................................................................................................................................................3-11
Condenser Water Requirements TABLE 3-2 ................................................................................................................3-12
Marley Cooling Tower Recommendations TABLE 3-3 ................................................................................................3-12
Safety Valves ................................................................................................................................................................3-13
Cooling Tower Piping Diagram, FIGURE 3-7 ..............................................................................................................3-14
Freeze Protection, FIGURES 3-8, 3-9, 3-10 ..................................................................................................................3-15,3-16
Wiring and Electrical Connections .................................................................................................................................3-16
Power Supply Connections, FIGURE 3-11 ....................................................................................................................3-17
Voltage Unbalance..........................................................................................................................................................3-17
Current Unbalance ..........................................................................................................................................................3-17
Rotation Check ...............................................................................................................................................................3-18
Auxiliary Controls or Equipment....................................................................................................................................3-19
Installation Review: A Checklist ...................................................................................................................................3-20
HOW YOUR TUBE-ICE MACHINE WORKS
Operating Features.........................................................................................................................................................4-1
Principle of Operation....................................................................................................................................................4-1
Freeze Period .................................................................................................................................................................4-1
Harvest Period ...............................................................................................................................................................4-2
Piping Nomenclature .....................................................................................................................................................4-2
Piping Schematic for P24A, FIGURE 4-1 .....................................................................................................................4-3
Piping Schematic for P34A, FIGURE 4-2 .....................................................................................................................4-4
5. START-UP AND OPERATION
Refrigeration System Review ........................................................................................................................................5-1
Start-up Checklist ..........................................................................................................................................................5-2
Refrigerant Charge.........................................................................................................................................................5-2
Ammonia Specification By Grade, TABLE 5-1 ............................................................................................................5-2
Special Precautions to be Observed when Charging Refrigeration Systems..................................................................5-2
Charging From Tank Truck ..........................................................................................................................................5-3
Charging From Cylinders .............................................................................................................................................5-3
Start-Up .....................................................................................................................................................................5-5
Adding Refrigerant ........................................................................................................................................................5-6
Operating Tips ...............................................................................................................................................................5-6
6. ELECTRICAL CONTROLS & THEIR FUNCTIONS
Bin Level Control ..........................................................................................................................................................6-1
Safety Switches..............................................................................................................................................................6-1
Control Panel (Door Opened), FIGURE 6-1..................................................................................................................6-2
Description of Control Panel Parts (Inside), TABLE 6-1 ..............................................................................................6-2
Control Panel (Door Closed), FIGURE 6-2...................................................................................................................6-3
Description of Control Panel Parts (Outer Door), TABLE 6-2......................................................................................6-3
Electrical Schematic All Voltages 50-60 Hz. Across Line Start, FIGURE 6-3 .............................................................6-4