VOGT ICE TUBE-ICE P-24A, Service Manual

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P24A & P34A Service Manual
SERVICING OPERATIONS
12/18/12
9-6
Condenser Cleaning.
There are 124- 1 1/4” OD x 84” long steel tubes in the P24A condenser/
receiver. These tubes are approximately 1 1/32” inside diameter (contact the factory for P34A
condenser tube sizing). Any brush or cleaning tool should be sized accordingly so as not to damage
the tubes during cleaning. The cleaning tools should be rotated at the specified speed for the
particular tool used. The tubes should be kept wet during cleaning After cleaning the tubes should
be flushed thoroughly and all foreign material removed. Contact your distributor or Vogt’s Service
Department to obtain the proper cleaning tools.
The following is the condenser cleaning procedure:
1. Refer to the space diagrams to, Section 2, to make sure ample room is provided for removing the
condenser heads and using the mechanical cleaning equipment.
2. Order replacement cover gaskets for use at the time of reassembly.
3. Disconnect and lock-out power to the ice machine and auxiliary equipment.
4. Disconnect water piping and drain the condenser. Additional water can be drained by loosening
the cover (heads) hex nuts and separating the covers from the condenser end.
5. Remove the heads stud bolts and gasket completely.
6. Inspect the tubes for excessive corrosion and possible ammonia leaks to determine whether or not
further cleaning is feasible.
7. Clean the inside of each tube as well as possible, being careful not to damage the tube. Follow
the instructions for the particular tool being used.
8. Flush each tube with water to remove all loose material to prevent contamination of the cooling
tower and sump.
9. Clean the ends of the tube sheets, so the new gasket will seal properly.
10.Insert the stud bolts to the proper depth and install the replacement gasket. Make sure the gasket
does not cover the extended tube ends.
11.Install the end covers (heads) and fasten securely in place with the hex nuts.
12. Reconnect the water piping, turn on the power. Check for leaks by turning the Hand-Auto switch
to Hand allowing the condenser pump to run.
13. Turn the switch back to Auto and wait for the crankcase heater to warm-up compressor before
starting the machine.
Cutter Gear Reducer.
The cutter motor and gear reducer (54), Figure 9-5B, drive the ring gear of
the cutter assembly. It is important that the teeth of the drive gear and the ring gear mesh properly
both vertically and horizontally. The drive gear and hub can be raised or lowered on the gear reducer
shaft to obtain maximum vertical tooth engagement and the reducer assembly can be moved in or out
horizontally to obtain the proper tooth depth for maximum gear life.
Note: The motor and gear reducer are an integral unit. Only qualified personnel should attempt to
disassemble and repair this unit.