Premium pwc215t User manual

PREMIUM SERVICE
Service Manual
Water Dispenser
Model : PWC215T
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IMPORTANT SAFETY NOTICE
The information in this service guide is intended for use by
individuals possessing adequate backgrounds of electrical ,electronic
and mechanical experience .Any attempt to repair a major appliance
may result in personal injury and property damage .The manufacture
or seller cannot be responsible for the interpretation of this
information ,nor can it assume any liability in connection with its use.
WARNING
To avoid personal injury ,disconnect power before servicing this
product .If electrical power is required for diagnosis or test
purpose ,disconnect the power immediately after performing the
necessary checks.
RECAPITULATING
This machine is one of water dispenser series. With adoption of
distinctive thermal isolation technology, it can minimize thermal
exchange between hot &cold water. It satisfy the need of cooking tea
&coffee and making cool drink. Its suitable for the use at home and in
public.
The machine is suitable for bottle of 3 or 5 gallons .Don’t use
unhealthy hard water .And it should work under environment of
temperature from 10℃～38℃，relative humidity not higher than 90%.

PARTS LIST AND EXPLODE VIEW
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CIRCUIT DIAGRAM
FUNCTION
Heating System:
Theory : The stainless steel heater is directly touched with the water in
the hot tank ,and let the water hot .
Heating Diagram:
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Hot Water Tank:
Power : 420W
The Water Temperatue : ≥90℃
Hot Water Tank Material : SUS304
Hot Water Tank Capacity : 5.0L/hour
Temperature Control : Double Bimetallic Thermostat (Chinaware)
Cooling System:
Theory : The compressor changes the refrigerant between liquid and
vapour ,and let the water and refrigerator cool .
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Parts View:
System Data:
Power : 75W~130W
The Water Temperatue : ≤10℃
Cold Water Tank Material : SUS304
Cold Water Tank Capacity : 2.0L/hour
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TROUBLE SHOOTING
NO. PROBLEM PROBLEM ANALYSIS SOLUTION
The power off Plug the power plug tightly
The heating switch off Turn on the heating switch
Connection terminal loose Fix the connection terminal
Heating thermostat failure replace the thermostat
Temperature control I failure Replace temp control
1 No hot water
The heater short circuit or
open circuit Replace hot water tank
Use water enough in a short
time Wait for a moment and use it
Connection terminal failure Maintance or replance it
2 Water not hot enough
Temperature control II failure Replance it.
PCB connection loose Fisup connection
LED strike down Replace it
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The machine working in
condition but heating light
off PCB burn out Replace it
Cold switch invalidation Fix or replace it
PTC mangled Replace PTC.
Thermostat I invalidation Adjust or replace it
Cooling system block
Refrigerant leakage
4 No c o l d w a t e r
(compressor cooling)
Compressor badness
Repair it by maintain center
Cold water use much Wait for a moment and use
Temperature higher than
normal Turn off the machine and cooling it
Thermostat invalidation Adjust thermostat
5 Water not cold enough
There is a lack of refrigerant Aredfd rigerant
Condenser surface gather dust Cleat out dust
Refrigerant leakage or loss Add refrigerant or repair it
6 Cooling time longer than
normal Compressor failure Fix compressor or replace it
empty bottle replace it with another one.
Pressure of bottle inner lower
than outside replace it with another one.
Ice block the pipe Turn off the compressor for a while
Water tap failure Replace it
There is air or gas in the bottle Push tap and let air out
7 No water running out from
taps
The water tube fold Reinstall or adjust it
The water tube fold Reinstall or adjust it
Ice or others block the pipe Clear away the block
8 Hot or cold water is
Shortage
Wate tap aging Replace water tap

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Water tap leakage Replace water tap
Supporter leakage Replace it
The bottle leakage Replace it
Water tube aging and leakage Replace it
Check way leakage Replace it
Hot tank leakage Replace it
Evaporator comes out
condensation
Seal the heat preservation foam
9 Water dispenser leakage
Leakage from purify bottle Replace purify bottle
Heater tank produce scale Clean it with detergent
Scrub with other part while
compressor is working.
Adjust place each other
10 Water dispenser is noisy
Throttle place utter noise Replace it by expert
Environment emperature
higher than normal
Cooling or stop the machine for a
while.
Refrigerant leakage Repair it by manufacture center
11 Cooling system goes on
working
Thermostat invalidation Adjust or replace it
12 Heating system goes on
working
Temperature controller
invalidation
Replace it
Evaporator frost Seal the heat preservation foam
PTC invalidation Replace it
13 Compressor starts frequent
Vacuumize shortage Repair it by expert
Hot water steam flow into
cooling tank
Check and eliminate it
Thermostat invalidation Replace thermostat
14 Hot and cold water mixed
Check valve failure Replace it
15 Foul odor in air around
dispenser
Hot water tank is empty or not
completely full.
Press the hot dispenser button until
water flows to remove air from the
hot tank.
Separator needs cleaning. See cleaning the separator
16 Water has poor taste or
odor Unit needs to be sanitized.
See cleaning and sanitizing the
water tanks.

CRITICAL PARTS SERVICING
Ⅰ Hot Tank Test And Operation:
1 ．Disconnect the condenser
and then disassemble the
wire who connect the hot
tank with power.
2 ．Test the thermostat with the
multimeter and estimate the
possible cause. If the
thermostat works, the
multimeter will appear data or
beep, Contrarily then contrary.
3 ．Use the multimeter to check the
heater. If the heater works, the
multimeter will appear data or beep,
Contrarily then contrary.
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Ⅱ Compressor T est And Operation:
1. During working situation, the compressor
is proved normal by its quiver.
2. Disconnect the PTC (Starter) cover and
replace it.
3. Check the compressor through the terminal.
Normal : The resistance amount data is not more than 5 ohm. It is
shown as diagram.
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