Norcold NX61, Руководство по обслуживанию

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60
Refrigerator Service Manual NX6 / NX8 / NXA Models
D
O
NO
T
ROT
ATE MAN
UA
LL
Y
V
L
T H
M
N
DISCONNECT POWER
TO REMOVE MODULE
U R 185W-115V-60 HZ
IM # S 106 626649
11 MAY 00 WB1
Shut-Off Arm
(ON position)
MIN MAX RANGE HOLD H
Hz REL
mA
A
mV
V
V
OFF
!
!
A COM V mA μ A
1000V MAX
400mA MAX
FUSED
10A MAX
FUSED
PEAK MIN MAX
μ A
CAT II
4 1/2 DIGITS
1 Seconds
87 TRUE RMS MULTIMETER III
Water Fill Adjustment
The ice maker water fi ll adjustment is factory set. Tampering
with the water adjustment screw may cause the water valve
to close before the mold is fi lled to normal level or exceed the
mold water level. If the valve closes before the mold is fi lled to
capacity, the ice cubes produced will be small and thin. If the
water valve remains open longer than 7.5 seconds, the water
level in the mold will be above the normal level. The excess
water above the normal level tends to form a layer of ice that
fuses all the ice cubes. The surface tension created by the
extra layer of ice prevents the ejector from removing the ice
cubes from the mold.
The water
fi ll adjustment screw location is shown in Fig. 49.
Turning the screw 1/4 turn in a clockwise or counterclockwise
direction varies the fi ll by 0.34 fl . oz. (10 mL).
Turning the screw varies the location of the adjustable internal
copper contact. The small hole in the contact should be in
the center of the module housing hole (alignment indicator).
With the hole centered, the water valve should remain open
approximately 7.5 seconds.
Low Ice Yield
The thermostat initiates the cycle when the temperature of
the mold is approximately 14°F. For the ice maker mold to
reach 14°F, the freezer temperature must be maintained at or
below 0°F. In gas absorption refrigerators low ice yield may be
caused by poor cooling unit ventilation, which directly affects
freezer temperature.
Water Valve Operation Test
Test water valve operation by shorting points V and L using
an insulated jumper wire. See Fig. 50. Shorting points V and L
energizes the valve's solenoid. When energized, the solenoid
will make an audible click and continuous buzzing sound until
the jumper wire is removed.
Water Valve Solenoid Resistance
Always disconnect the ice maker AC power cord before taking
resistance readings on the water valve solenoid.
To contact test points V and N, the resistance meter's probes
must be at least 1/2 inch long. See Fig. 51.
• Resistance values: 295 to 360 Ω .
• OL: check for loose wire harness connections at the
water valve or an open solenoid coil.
• 00.0 Ω : Indicates a short between the ice maker and the
water valve.
Fig. 50 - Energize water valve through test points V
and L
Fig. 51 - Measure water valve solenoid resistance
295 to 360 ohms
D
O
NO
T
ROT
ATE MAN
UA
LL
Y
V
L
T H
M
N
DISCONNECT POWER
TO REMOVE MODULE
U R 185W-115V-60 HZ
IM # S 106 626649
11 MAY 00 WB1
Insulated jumper wire
(14 AWG with 1/2-stripped ends)
Ice Maker - cont’d.