Cornelius UCR 700 Series Manual de servicio descargar pdf (Pagina 26)

630460154

TROUBLESHOOTING CHART -- ICEMAKER NOT OPERATING

NO POWER

Check electrical wiring in con-

trol box for loose connec-

tions.

Check for fai led service

switch or relay.

Check power to machi ne.

ICEMAKER RUNS BUT

DOES NOT MAKE ICE

Condenser fan running

but compressor not running

Check li ne voltage.

Check compress or winding

& components.

LOW WATER SAFETY

SWITCH OPEN

Remote c ondenser

not running.

Evaporator water tube

may have an air bubble.

Clear air bubble from

tube.

Check power

to condenser.

Check electrical

wiring in control box

for loose connections .

High pressure

switch open or

cyclingonandoff.

Check that water is turned on.

Check for restric tion in water line.

Check inc oming water pressure

(minimum 10 lbs.).

Check water safety switch.

ICEMAKER OPERATING BUT

SOFT ICE

Check bin switch

Clean all related

drain lines.

Refer to guide

to Good Ice in

servic e manual .

GEARMOTOR OVERLOAD

TRIPPED

Check water l evel control

and evaporator water tube

for lime build up restriction.

CAUTION

Clear ice from

evaporator and

auger before re-

setting over-

load.

CLEAN

see

instructions.

Reset

overload.

Icemaker runs

Reset but

motor does

not run.

Will not

reset.

Overload

hot try

again.

Will not

reset

replace

overload

Check

gearmotor

circuit.

Short run trips

again in 2 mi n-

utes. Check gear-

motor circuit.

IMPORTANT

Icemaker runs when reset

but problem has not been

found.

Continue check ing for

overload as follows to

guard against future

problems

Low suction pressure

(20 lbs. or below).

TXV bulb

lost charge.

Replace valve

evacuate and

recharge.

High suction pressure

(30 lbs. or above).

Suction line

not

insulated.

Bulb

uninsul ated.

Clean and

insulate.

TXV not

operating

properly.

Bulb

loose.

Clean

and

tighten.

Head

Pressure

high.

Valve

stuck

open.

Replace

valve.

Condenser

dirty or

restricted.

Condenser

fan not

running.

To o m uc h

refrigerant in

system.

Non-condensible

in system.

Discharge

king valve

partially

clos ed.

Open

valve

Evac uate and

recharge system.

Clean condenser.

Check electrical circuit

to fan motor.

Check fan motor.

Low press ure switch open

orcyclingonandoff.

Low on

refrigerant.

Plugged

liquid line

dryer.

Restricted

liquid line.

Plugged or

faulty TXV.

Icemaker

froze up.

Check if

auger is

turning.

Replace

valve.

Evac uate

and

recharge

system.

Check for

kinks or

damage to

liquid line.

Replace

dryer.

Evac uate

and

recharge

system.

LAC not operating

properly (minimum

disc harge pressure

180 lbs.).

Check for

leaks.

Replace LAC valv e,

evacuate and

recharge system.

Check drive on

gearmotor.

Check gears in

gearbox.

Check if extruding

head is down i n

evaporator tube.

OVERLOAD GUIDE

ELECTRICAL

High or low voltage weak power lines can caus e ov erloads on icemaker restarts

High running c urrent. Check motor c ircuits and start relay -- Auger delay failed.

ICEMAKER

Mechanic al parts worn. S cored evaporator or auger. Worn thrust bearing.

Ice maker not turning off. Failed ice level control.

Over compress ion. Low water i nlet temperature. Res triction in water line from

reservoir.

REFRIGERANT

Contaminated charge or bad compressor.

Low c harge or gas leak.

Low suction pressure. Improper expansi on valve sensing bulb. Loc ation or insulation

and/or defective expansi on v alve

Remote c ondenser

units only

Remote c ondenser

units only

Yes

Yes No

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Cornelius UCR 700 Series Manual de servicio Pagina 26

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