Technical information

12/01/02
3. Bridging or ice strips
a) Bridging that occurs on all ribs of all evaporator plates
is the result of excessive water in the reservoir. This is
caused by the inlet water valve leaking by. Check for a
plugged bleed port in the water valve diaphragm or a
defective water valve.
b) May be the result of # 2.
c) Bridging can occur on a few ribs if some of the holes in
the water distribution tubes are plugged. An inspection
of the ice build up on the evaporator will show some ribs
with no ice and others with strips. Clean the water
distribution system.
d) Bridging on 1 or 2 plates of a multiple evaporator unit
can result from water distribution problems or a refrig-
eration system problem. Eliminate water problems first
then check TXV, hot gas valve, charge, etc....
BRIDGING WILL GENERALLY CAUSE A FREEZE UP.
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12/20/03
2/20/03