Philips HD4770 Service Manual
Service
Service
Service
HOT POT
HD4770
Philips Domestic Appliances and Personal Care
Service Manual
PRODUCT INFORMATION
Voltage |
: 220-240V |
Frequency |
: 50-60 Hz |
Power consumption |
: 1000 W at Boiling mode |
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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.
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 war m heater ter minal 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.
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Terminal |
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Terminal |
B |
Terminal |
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A |
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C |
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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.
Item |
Description |
Consist of |
12NC |
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1 |
Lid Assembly |
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4822 442 01763 |
2 |
Outlet pipe stand |
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4822 256 10559 |
3 |
Glass pipe |
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4822 530 10308 |
4 |
Pipe connector set |
101,102,103,104 |
4822 528 11318 |
5 |
Thermal fuse 109°C |
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4822 252 11363 |
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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 |
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11 |
Handle |
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4822 498 10727 |
12 |
Tank Body |
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4822 441 12315 |
13 |
Holder set |
107,108,109,110,111 |
4822 410 12295 |
14 |
Circuit board |
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4822 214 13031 |
15 |
Socket set |
112,113 |
4822 265 11575 |
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16 |
Base |
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4822 464 10513 |
17 |
Rotating ring |
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4822 532 13131 |
18 |
Base plate |
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4822 442 00689 |
19 |
Cord set HK / Singapore |
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4822 321 11486 |
20 |
Sealing set |
114, 115, 116 |
4822 532 13132 |
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Note: Parts of number 100 onwards cannot be ordered separately.
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T/S1 |
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R |
TRS 1 |
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KEEP |
INPUT |
T/S2 |
T/S3 |
WARM |
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LAMP |
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BOIL |
KEEP WARM |
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MAIN |
LAMP |
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HEATER |
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HEATER |
R |
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