Vivax WFL-1001, Руководство по обслуживанию

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P.53
4. NTC and heater
The normal working range of NTC is -7
℃
to 105
℃
.
The higher of the temperature, the lower the
NTC’s resistance value. While the heating
temperature will be tested through testing the
NTC’s resistance value. NTC is inserted in the
resistance’s flange, which seal ring guarantee
the airproof quality. You should loosen the lock
facility in order to replace the NTC.
NTC parameters:
R/t speciality:
℃
Resistance speciality:
Temperature range: -7
℃
-105
℃
Resolution:
≤
1k
Tolerance: ±2.5
℃
Test condition:
Heater parameters
Voltage
:
UN±1%
Rating power
:
1800W
Rating voltage
:
230VAC
Power tolerance
:
+5% -10%
Resistance
:
About 300
.
: NTC’s resistance value is 2815
±
3.5%
at 25
℃
,
t is about 27
,
5. Drain pump
When the power is on, it will
drain water with its impeller.
Technical parameters:
Voltage: 220V
Frequency: 50 Hz
Power: 30 W
Capacity extent: 1.2 m
Flux: 1.8L/min
The methods of testing drain pump:
1) It's resistance value is about 240 tested by multimeter, if the value is zero or infinity,
it need to be replaced.
2003,Tn=60 ,
dRn=2% and dB= 1%
R(25) = 4.828 k
Ω±
3.5 %
，
R(100)= 330
Ω ±
3.3 %
~
Ω
Resistance is made up of two heat fuses which can’t be replaced and integrative (the
insurance facility preventing heating without water)
The testing methods of NTC are as follows:
Ω
if its value is zero or infinity, the NTC is fault and should be replaced.
The testing method of heater is as follows: he resistance value of heater
Ω
if its value is infinity, the heater is fault and should be replaced.
Ω
6.TROUBLESHOOTING