Repair Instructions; Electrical Circuit - Philips Perfect Draft HD3610/50 Service Manual

REPAIR INSTRUCTIONS

Electrical circuit:

- When the appliance does not work, check the electrical circuit.
Process block diagram of the appliance
10.5 V
J1
Power supply
J2
Mains
(120 V or 230 V)
Working principle of the appliance
- Hereby a short description of the working principle.
- Beer, the Beer is stored in a plastic bag inside the Keg, see picture 5.
- 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
(± 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 get back in the overpressure situation like described before.
- When the Keg present switch has been actuated also the cooling process (Peltier element) will be started.
- The temperature is measured by a NTC located near the Keg present plunger.
Pressure
Sensor
PCB
M
J6
J7
J14
Interface board
(rear panel)
J5 J4
J3
Air
Air inlet
pump
LED Display
Picture 5.
HD3610/50
Beer outlet
Keg
NTC
Keg present
switch
Heatsink
Beer in
plastic bag
M
Fan
Chillerplate
Peltier
Keg fill air
release
Compressed
air
3-12