Philips HD4770 Service Manual

HOT POT

HD4770

Service
Service

Service

Philips Domestic Appliances and Personal Care

Service Manual

PRODUCT INFORMATION

Voltage : 220-240V
Frequency : 50-60 Hz
Power consumption : 1000 W at Boiling mode

50 W at keep warm mode

Capacity : 3.0 Liters

Features :

- Auto keep warm

- Reboil

- Empty boil protection

- Detachable lid

Auto keep warm :

The keep warm temperature is preset at 79°C to 85°C,
which is controlled by thermal reed switch (item 6).

Reboil :

When activate the REBOIL switch, water will be heated
up from preset keep warm temperature to boiling
temperature in five minutes maximum.

Empty boil protection :

The circuit of the appliance is equipped with empty boil
protection to prevent over-heating. When the tank is empty
and at boiling mode, the empty boil protection will be
switched on. However, a burnt mark may be resulted at
the inner wall of the tank.

Detachable lid :

One can detach the lid by pressing down the mechanical
lock at the hinge and at the same time pull out the lid at
the range of 25° to 45°.

25ϒ-45ϒ

Published by Philips Domestic Appliances and Personal Care Printed in Hong Kong ©Copyright reserved Subject to modification

4822 729 21999
12/98
Ver.1

SERVICE INFORMATION

Inner tank :

In case the inner tank is damaged, the
appliance has to be replaced.

Item Description Consist of 12NC

Heater :

When the appliance does not work,
check the electrical circuit and the
heater resistance.
To measure the heater resistance :
Disconnect all the wires to the heater
terminals A, B and C.
Use a ohm meter to measure the main
heater terminal AB, the resistance
should be 56 ohm ± 5%.
Use a ohm meter to measure the keep
warm heater terminal AC, the
resistance range should be at 529
ohm ± 5%.
If the resistance of any of the heater
exceeds the above resistance ranges,
the appliance has to be replaced.

Terminal

Terminal

A

B

Terminal

C

1 Lid Assembly 4822 442 01763

2 Outlet pipe stand 4822 256 10559

3 Glass pipe 4822 530 10308

4 Pipe connector set 101,102,103,104 4822 528 11318
5 Thermal fuse 109°C 4822 252 11363
6 Thermal reed switch 80°C (TRS1) 4822 282 10342
7 Auto thermostat 115/75°C (T/S1) 4822 282 10343
8 Reboil thermostat 95/0°C (T/S2) 4822 282 13044

9 Sensor holder set 105,106 4822 256 10561
10 Thermostat 96/70°C (T/S3) 4822 282 10345

11 Handle 4822 498 10727

12 Tank Body 4822 441 12315

13 Holder set 107,108,109,110,111 4822 410 12295

14 Circuit board 4822 214 13031

15 Socket set 112,113 4822 265 11575

16 Base 4822 464 10513

17 Rotating ring 4822 532 13131

Handle :

To replace the handle (item 11), the
inner tank has to be taken out. Put the
handle in a horizontal position and
pull at both sides.

18 Base plate 4822 442 00689

19 Cord set HK / Singapore 4822 321 11486

20 Sealing set 114, 115, 116 4822 532 13132

Note: Parts of number 100 onwards cannot be ordered separately.

T/S1

TRS 1

R

KEEP

INPUT

T/S2

T/S3

WARM
LAMP

BOIL
LAMP

KEEP WARM

HEATER

MAIN
HEATER

R