Service manual

24
Installation and Service Manual
COMPONENT DIAGNOSTICS
ICE MACHINE CHECKLIST (CONTINUED)
PROBLEM
3. POOR ICE FILL ON EVAPORATOR:
O Float or dump valve leaking through
O Water pan not seated or out of level
O Water curtain out of adjustment allowing wa-
ter to splash into bin and/or curtain freezing
to evaporator changing flow and freeze pat-
tern over thermistor
O Water flow too fast over evaporator
O Water distributor tube not centered
O No control of water flow over evaporator (too
fast)
CORRECTIVE ACTION
Replace, or clean, as required.
Reseat pan on blocks. Level ice machine.
Adjust curtain brackets for proper alignment. Cur-
tain brackets are adjustable 3/8" (9.5mm) up down/
front to back. Curtain should be set to just clear top
edge of water pan.
Check position of water distribution tube. The tube
should be spraying toward lower back of extrusion.
Be certain required sealing of evaporator upper ex-
trusion area is done.
Water Distribution tube must be centered over top
extrusion of evaporator.
Check inner tube of water distribution to be 180o
from outer tube. Check restriction plug in water sys-
tem.
PROBLEM
4. ICE BRIDGE NOT CORRECT:
O Slow harvest
A) Excessive meltage of bridge and cubes
B) Machine not level
O Control board out of adjustment
O Thermistor incorrectly mounted
O Thermistor sealant defective
O Defective thermistor
CORRECTIVE ACTION
Mineral contamination - clean evaporator
Re-Level ice machine.
See adjusting bridge thickness for your style of cir-
cuit board.
Follow procedure to remount thermistor
Follow procedure to remount thermistor
Replace thermistor