Vogt P18FXT - Page 7

10TA Service Manual
TABLE OF CONTENTS
iii
Page No.
7. MAINTENANCE (cont)
Cutter Gear Reducer Lubrication ................................................................................................................................... 7-7
Preventive Maintenance ................................................................................................................................................. 7-8
For The Manager ........................................................................................................................................................... 7-9
Preventive Maintenance Form ....................................................................................................................................... 7-10
8. TROUBLESHOOTING
List Of Symptoms .......................................................................................................................................................... 8-1
Machine Won’t Run ...................................................................................................................................................... 8-2, 8-3
Freeze-Up Due To Extended Freezing Period ............................................................................................................... 8-4
Freeze-Up Due To Ice Failing To Discharge ................................................................................................................. 8-5
Poor Ice Quality ............................................................................................................................................................. 8-6
Low Ice Capacity ........................................................................................................................................................... 8-7
Low Compressor Oil Level ............................................................................................................................................ 8-8
High Head Pressure (Water Cooled) .............................................................................................................................. 8-9
High Head Pressure (Air-Cooled) .................................................................................................................................. 8-10
9. SERVICE OPERATIONS
Adjustable Blowdown (For Clearer Ice) ........................................................................................................................ 9-1
Water pump / Blowdown Assembly, FIGURE 9-1 ........................................................................................................ 9-1
Automatic Blowdown (Harvest Cycle) .......................................................................................................................... 9-1
Float Valve (Make-Up Water) ....................................................................................................................................... 9-1
Float Switch ................................................................................................................................................................... 9-2
Hansen Float, FIGURE 9-2 ........................................................................................................................................... 9-2
Hand Expansion Valve .................................................................................................................................................. 9-3
Freezer Pressure Switch ................................................................................................................................................. 9-3
Freezer Pressure Switch (Allen-Bradley), FIGURE 9-3 ................................................................................................ 9-3
Capillary Bypass ............................................................................................................................................................ 9-4
High/Low Pressure Switch ............................................................................................................................................ 9-4
High/Low Pressure Switch, FIGURE 9-4 ...................................................................................................................... 9-4
Head Pressure ................................................................................................................................................................ 9-5
Water Cooled Units ....................................................................................................................................................... 9-5
Air-Cooled Units ........................................................................................................................................................... 9-5
Water Regulating Valve, FIGURE 9-5A ....................................................................................................................... 9-5
Condenser Fan Switch, FIGURE 9-5B .......................................................................................................................... 9-5
Condenser Cleaning ....................................................................................................................................................... 9-5
Air-Cooled Condenser ................................................................................................................................................... 9-5
Compressor Motor Protection, Electronic...................................................................................................................... 9-6
High Potential Testing .................................................................................................................................................. 9-7
Field Troubleshooting ................................................................................................................................................... 9-7
Electronic Module and Compressor Terminal Board Connections, FIGURE 9-6 ........................................................ 9-8
Oil Pressure Safety Control / Sentronic Oil Safety, FIGURE 9-7 .................................................................................. 9-9
Oil Pressure Sensor ........................................................................................................................................................ 9-9
Oil Pressure Module ...................................................................................................................................................... 9-10