ITV ICE MAKERS NDP 20 A User Manual

NG DP
TECHNICAL SERVICE MANUAL
26
10. TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSES
SOLUTION
1) None of the electrics work.
A) The machine is not plugged in.
A) Plug the machine.
B) The line fuse has blown.
B) Replace fuse.
C) The current line is wrongly
connected in the junction box.
C) Check connections.
D) The cut off micro-switch is faulty or
wrongly adjusted.
D) Check, adjust or change.
E) Safety pressure switch faulty.
E) Replace.
2) All the electrics work except
compressor.
A) Check switch installed in electrical
panel.
A) Select position 1..
B) Faulty relay .
B) Replace relay.
C) Faulty “Klixon”.
C) Replace Klixon.
D) Faulty compressor.
D) Replace compressor.
3) All the electrics work but the
compressor “klixons”
A) Voltage too low.
A) Check voltage.
B) Dirty condenser.
B) Clean condenser.
C) Obstruction in air circulation.
C) Move machine to a correct position.
D) Fan has broken.
D) Replace fan.
E) Starter capacitor faulty.
E) Replace condenser.
F) Fan pressure swtich faulty or
wrongly adjusted.
F) Replace or adjust pressure switch
G) Water pressure switch valve
faulty or wrongly adjusted.
G) Replace or adjust.
H) Cooling water pressure switch is
faulty or badly adjusted.
H) Adjust or change.
J) Non-condensable gases in system.
J) Purge system.
4) Everything appears to be
running correctly but no ice is
being made in the
evaporator.
A) Unprimed pump.
A) Check overflow, water bin for leaks,
water entry valve and prime the
pump.
B) Faulty pump. B) Replace.
C) Water does not enter into the bin.
C) Check water entry valve and change
if is necessary.
D) There is water in the gas circuit. D) Replace the drier, empty the
refrigerant (vacuum) and charge
new refrigerant.
E) Water tray is dry.
E) Check overflow pipe and for leaks.
Inspect draining valve in machines
with automatic cleaning system.
Check the buoy valve mechanism
in DP90 and DP140.
F) Freezing system is faulty (dirty
condenser, water pressure switch
or entrance valve faulty or
wrongly adjusted insufficient
refrigerant.
F) Clean condenser, check all the
system components: pressure
switch, water inlet valve, refrigerant
charge, etc.

ITV ICE MAKERS NDP 20 A Specifications

General

Brand	ITV ICE MAKERS
Model	NDP 20 A
Category	Ice Maker
Language	English