Philips HD3600/20, HD3600/B Service
Perfect Draft “Beer Tap”
HD3600/20
/B
Philips Domestic Appliances and Personal Care
Service Manual
PRODUCT INFORMATION
- This product meets the requirements regarding
interference suppression on radio and TV.
- After the product has been repaired, it should function
properly and has to meet the safety requirements as
officially laid down at this moment.
TECHNICAL INFORMATION
- Power : 70 W
- Power consumption :
- Cool down period average
(KEG 23 °C -> 3 °C) : 0.068 kWh
- Standby period
(KEG on 3 °C) : 0.052 kWh
- Voltage : 100 - 120 V - 50/60 Hz
200 - 240 V - 50/60 Hz
- Flow rate : 2 L per minute
- Contents Keg : 6 L
- Colour setting : Black/Metal
- SAP coding : HD3600/20/B
OPTIONAL (accessories)
- No specific issues
Published by Philips Domestic Appliances and Personal Care Printed in the Netherlands © Copyright reserved Subject to modification
07/06
DISASSEMBLY- AND RE-ASSEMBLY ADVISE
HD3600/20/B
For your safety first be sure the plug is
disconnected from the mains!
Rear case removal:
- To remove the rear case, first remove the 4 screws.
- Open both doors, at the upper/lower right and left side the
screws can be found.
Replacing the Display: *
- When the display has to be replaced for some reason, the
complete Left door including display and flat cable has to
be replaced.
- Remove the rear case assy, see rear case removal for details.
- Disconnect the flat cable connector from the main PCB
that is coming from the left door.
- To re-assembly carry out steps backwards.
* Please note that from WK527 onwards there exists
two different type versions of Display/door assy, if
those versions will be mixed up the appliance will
not work properly!
(See page 14 for the explanation/description!)
Replacing the Fan assy:
- When the Fan has to be
replaced, unscrew the 4 posi
screws and disconnect the
connector of the Fan.
- When re-assemble the fan
assy, be sure that the airflow
(see arrow on the Fan) is
appointing to the heatsink.
NOTE:
When the Fan became defect also Peltier
element has to be replaced or fully checked on
performance. Due to overheating also the Peltier
element will be damaged.
Picture 3.
Picture 1.
- When the rear has been removed all parts can easy be
reached.
Replacing the Keg Connector Assembly:
- The Keg connector assembly is very accurate outlined with
assembly at production.
- This has been done to be sure all Kegs will fit easily without
leakage to the machine.
- To be sure to place the new Keg connector assembly on
the same spot, make the following precautions before
unscrewing the Keg connector assembly.
- With a sharp screwdriver,
scriber or marking tool you
have to make a mark on the
plastic, see picture for detail.
- When the mark has been
carried out, you can unscrew
the 4 posi screws and remove
the Keg connector assembly.
Picture 2.
- When reassemble the new Keg connector assembly, first
connect the air pressure hose and then make sure that the
new part will be outlined next to the marking you just
made with the original part.
2-15
DISASSEMBLY- AND RE-ASSEMBLY ADVISE
Replacing the Peltier element:
- When the Peltier element has to be replaced, first remove
the rear case assy and Fan assy.
- Unscrew the 2 screws located on the heat sink.
- The heat sink including Peltier element can now be
removed.
- With a small screwdriver the Peltier element can be removed
from the heat sink, some force maybe needed.
- Before placing the new Peltier element, provide heat sink
paste on both side of the Peltier element.
- Place the new Peltier element on the cooler plate on the
same position of the removed Peltier element.
NOTE! It is important to place the Peltier element with
the right side on the COOLER PLATE.
- The cooler plate is the aluminium part fixed in the
appliance, where the KEG will be cooled on.
- The heat sink is the aluminium part where the fan is
assembled on.
- In other words, the cooling side of the Peltier has to point
to the COOLER PLATE and the warm side has to point to
the HEAT SINK.
- Details to check are:
• Soldered joints must be pointing
to the cooling plate.
(when Peltier is placed on the
cooler plate the soldered joints
are not visible, seen from the
backside)
• Colours of wires must be equal
positioned see, picture for detail.
- Be careful and make sure the Peltier element is well placed.
- Now the heat sink can be placed on the peltier element.
- Tighten the screws alternate, to prevent damaging the
Peltier element for mounting lop-sided.
- Maximum force that maybe applied to tighten the screws
are: 0.6 Nm.
Procedure for checking cool down
performance Peltier element.
To ensure the Cool performance of the Peltier element is
according specifi cation the below test procedure have to be
carried out.
- Preparations:
1. Switch the appliance off and let it stabilize until it
reached room temperature.
2. Remove under the base in the middle the rubber Cap.
3. The chiller plate
becomes visible.
Picture 4.
contact
temperature
probe
HD3600/20/B
- Performing the temperature measurement, when the unit
has reached the room/environment temperature.
1. Place a contact temperature probe against the chiller
plate where the rubber cap was removed.
2. Block the air inlet
coupling at the Keg
side, see picture 6 for
location.
Picture 6.
3. Plug the appliance in the wall socket and bridge over
the Keg present switch mechanically or electrically so
the appliance will start.
4. When the appliance has started the pump will run
shortly (in case the air inlet has been blocked properly)
5. Readout the temperature meter and note it down.
6. Keep the appliance switched on for 2 minutes, readout
the temperature again.
7. If the temperature has decreased more then 6 °C,
between the two measurements the cooling works fine,
if not please check again or replace Peltier or Fan assy.
- Final:
When the appliance is checked and OK, place the rubber
Cap back under the base.
Replacing pressure sensor PCB:
- To replace the pressure sensor PCB assy, situated on the
pump, unscrew the 2 screws completely.
- Disconnect the connector, gently turn the PCB assy left and
right and at the same time pull the unit up.
Sometimes also the side cap must be unscrewed a little to be
able to remove the pressure sensor.
- Place the new PCB assy and check if the small rubber ring
on the sensor tube is on its place.
Replacing the pump unit:
- Start with disconnecting the air pressure hose and electrical
connections.
- Unscrew the 3 screws from the plastic bracket were the
pump unit is hanging on.
- To re-assembly carry out steps backwards.
NOTE! To prevent leakage at the connection side of the
hose, cut a small piece off the end of the hose.
rubber
Cap
Picture 5.
3-15
REPAIR INSTRUCTIONS
Electrical circuit:
- When the appliance does not work, check the electrical circuit.
HD3600/20/B
Beer outlet
Process block diagram of the appliance
Shortcut to
enter Service
mode
10.5 V
Power supply
Mains
(120 V or 230 V)
J1
J4 J3
Interface board
(rear panel)
J8 J7 J11 J6 J5
J2
10k
pull-down
Step through
Service mode
Pressure
Sensor
PCB
J10
J12
J9
M
Air
pump
Micro controller
PCB
(Front panel)
Display
Air inlet
Keg present
switch
Heatsink
M
Fan
Peltier
NTC
Keg
Beer in
plastic bag
Chillerplate
Keg fill air
release
Compressed
air
Picture 7.
Working principle of the appliance
- To understand the appliance better hereby a short description of the working principle.
- Beer, the Beer is stored in a plastic bag inside the Keg, see picture 7.
- The Beer only comes in contact with the tube connector and never with the appliance.
- When the tap unit and tube connector are connected on the Keg and the Keg is placed in the appliance, the Keg present switch
will be activated.
- Once the appliance is activated after approximately 10 seconds you will hear a pump running.
- The task of this pump is to fill the space between the plastic bag and the walls of the Keg with air and create an overpressure
situation (Overpressure ± 1500 mBar).
- Through the over pressure around the plastic bag (comparable like you squeeze into the plastic bag) the Beer will be pressurized
(sort of) as well.
- By pulling the tap handle the tube connector hose will become opened and the Beer will flow out of the plastic bag via the tube
connector in to the glass.
- After this cycle the pump will start running to go back into the overpressure situation like described before.
- When the Keg present switch has been actuated also the cooling process (Peltier element) will be started and display functions will
become visible.
- The temperature will be measured by a NTC located in the Keg present plunger and indicated on the display.
- The volume indication measurement is based on the principle of a pressure drop measurement, measured by a pressure sensor.
- When pouring Beer, the pressure in the KEG will decrease, the amount that the pressure will decrease in a period of time will be
calculated through the system.
- The result of this calculation will be indicated on the display.
- The volume indication steps are dived in 4 steps of 25 %.*
* Note that from WK532 onwards the volume indication steps have been adapted from 4 levels to 8 levels.
(See page 14 for the explanation/description!)
4-15
REPAIR INSTRUCTIONS
Service testroutines
- This appliance has been equipped with special service routines to be able to check several functions of the appliance.
- Below the necessary steps will be described to enter into the service mode.
- Please follow the instructions carefully to avoid damaging the electronic circuit of the appliance.
Putting the appliance into Service mode.
1. Disconnect the appliance from mains.
2. Remove the keg.
3. Shortcut connector J3. (see picture 7)
4. Connect a simple push button to connector J9.
5. Connect the appliance to mains.
Stepping through the Service mode.
- As the Service Mode is entered, the display will show the software version, Service Mode 0.
- Every time the push button is activated, the next Service Mode is entered, forcing another part of the appliance to become active.
The list below shows all the possible Service Modes.
- After mode 10, the routine jumps back to mode 1.
Mode Test Stimulus Response Remark
No test Shows software version 2 digits. E.g. 20 = version 2.0
0
Display test 1. Display shows red 1
2. Display blanks
1
Pump motor 1. Pump motor starts running.
2
Fan motor
high level
3
Fan motor
low level
4
Peltier low 1. Peltier starts cooling.
5
Peltier medium 1. Peltier starts cooling.
6
Peltier high 1. Peltier starts cooling.
7
8
9
10
Pressure
measurement
Temperature
measurement
Keg Activation
switch
Connect dummy
pressure sensor
Connect dummy
NTC sensor
Operate the Keg
Activation switch
3. All segments on (red)
4. All segments on (green)
5. Repeat from 2.
2. Display shows red 2.
1. Fan starts running.
2. Display shows red 3.
1. Fan starts running.
2. Display shows red 4.
2. Display shows red 5.
2. Display shows red 6.
2. Display shows red 7.
1. Display shows full bar, graph if ok.
2. Display shows red 8.
1. Display shows full bar, graph if ok.
2. Display shows red 9.
1. Bar graphs off (not activated)
or on (activated).
2. Display shows red 10.
Segment test runs automatically
Pump runs; Voltage across pump:
~9 Vdc / ~2.7 Vrms
Fan runs on high level (100%)
Voltage across fan:
~10.5 Vdc / ~0 Vrms
Fan runs on low level (~75%)
Voltage across fan:
~8.9 Vdc / ~0.25 Vrms
Peltier runs on low level (~10%)
Voltage across Peltier:
~2.3 Vdc / ~3.0 Vrms
Current through Peltier: ~2.3 Arms
(Fan keeps running at high level)
Peltier runs on medium level (~50%)
Voltage across Peltier:
~6.0 Vdc / ~4.0 Vrms
Current through Peltier: ~4 Arms
(Fan keeps running at high level)
Peltier runs on high level (100%)
Voltage across Peltier:
~10.5 Vdc / ~0.0 Vrms
Current through Peltier:
>4.7 Arms (lower = defect Peltier
(Fan keeps running at high level)
Replace pressure sensor by dummy
sensor
Replace NTC sensor by dummy
sensor
HD3600/20/B
5-15
Loading...