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Section 7 Refrigeration System
Part Number 80-1559-3 7-7
3. Extremely Thin at Evaporator Inlet
There is no ice, or a considerable lack of ice formation at
the inlet of the evaporator. Examples: The ice at the
outlet of the evaporator reaches 1/8" to initiate a harvest,
but there is no ice formation at all at the inlet of the
evaporator.
Possible causes: Insufficient water flow, flooding TXV,
etc.
Figure 7-4. Extremely Thin Ice Formation at
Evaporator Inlet
4. Spotty Ice Formation
There are small sections on the evaporator where there
is no ice formation. This could be a single corner, or a
single spot in the middle of the evaporator. This is
generally caused by loss of heat transfer from the tubing
on the back side of the evaporator.
Figure 7-5. Spotty Ice Formation
5. No Ice Formation
The ice machine operates for an extended period, but
there is no ice formation at all on the evaporator.
Possible causes: Water inlet valve, water pump, starving
expansion valve, low refrigerant charge, compressor,
etc.
Figure 7-6. No Ice Formation
OUTLET
INLET
ICE
OUTLET
INLET
ICE
OUTLET
INLET