Vogt Tube-Ice HFO10, Service Manual

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8-1
Chapter 8 Troubleshooting
Warning: Only service personnel experienced and certified in refrigeration and qualified to work with
high-voltage electrical equipment should be allowed to install or work on this Tube-Ice ® machine.
Follow all lock-out and tag-out procedures before servicing any electrical equipment.
Note: With the exception of bin control, anytime the machine stops, it must be manually restarted by pushing
the Start button. If the machine stops during a freeze period, it restarts in a thawing (harvest) period.
This section lists potential problems and suggests solutions for this Tube-Ice® machine. Some of the problems
and solutions apply to optional equipment supplied by others and may vary. Many problems are easy to solve if
you know what caused them. If your problem is not covered in this section, call the factory directly at
1-502-635-3000 or 1-800-853-8648.
Your machine’s electrical system has several built‐in safety and overload protection features to stop oper ation
when a single component fails or there is a problem from an outside source, such as a power supply. Make sure
all auxiliary equipment is connected to safety and overload circuits so all related equipment is protected.
Always check the machine thoroughly after addressing the problem to prevent the same cause from
reoccurring.
Machine Not Running
Possible Causes Possible Solutions
Power failure and intermittent
power interruption Check electrical fused disconnect or circuit breaker supplying power to
the machine. If power has been off for a period of time, make sure the
compressor crankcase heater is energized, the crankcase is warm
(100 - 110°F [38 - 43°C]), and there is no liquid refrigerant in the
crankcase before running the machine. Push
Start to initiate startup in a
thawing period.
3.0-amp circuit breaker in the
control panel trips Check compressor crankcase heater, coils of relays, contactors, starters,
solenoid valves, and thawing timer for a ground. Repair or replace any
defective part and replace fuse. Make sure there is no liquid refrigerant
in the compressor crankcase before restarting the machine.
High/low safety pressure switch
trips If the machine stops because the pressure is too low, the switch resets
automatically when the pressure increases to the appropriate setting. If
the machine stops because the pressure it too high, the switch
automatically resets after the pressure drops below the appropriate
setting. Check switch settings. Push
Start to start the machine in a
thawing period. Check the head pressure during the next freeze
period. Refer to Chapter 9, (High/Low Pressure Switch).
Optical oil sensor trips
If the machine stops because the oil level is too low oil, check the
compressor oil-level sensor. A solid red light comes on if tripped. To
reset the sensor, add oil to the compressor. The oil level should be
¼
– 3/4 in the upper sight glass. Once oil is added to the compressor and
the red light is off, the machine is ready to restart.