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HOT POT
Service Service Service
Philips Domestic Appliances and Personal Care
HD4770
Service Manual
PRODUCT INFORMATION Voltage Frequency Power consumption Capacity : 220-240V : 50-60 Hz : 1000 W at Boiling mode 50 W at keep warm mode : 3.0 Liters 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°. Features : Auto keep warm Reboil Empty boil protection Detachable lid
25 -45
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 wa r m h e a t e r t e r m i n a l AC, t h e 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. Item 1 2 3 4 5 6 7 8 9 10 11 12 13
Terminal B
Description Lid Assembly Outlet pipe stand Glass pipe Pipe connector set Thermal fuse 109°C Thermal reed switch 80°C Auto thermostat 115/75°C Reboil thermostat 95/0°C Sensor holder set Thermostat 96/70°C Handle Tank Body Holder set Circuit board Socket set Base Rotating ring Base plate Cord set HK / Singapore Sealing set
Consist of
12NC 4822 442 01763 4822 256 10559 4822 530 10308
101,102,103,104
4822 528 11318 4822 252 11363
(TRS1) (T/S1) (T/S2) 105,106 (T/S3)
4822 282 10342 4822 282 10343 4822 282 13044 4822 256 10561 4822 282 10345 4822 498 10727 4822 441 12315
107,108,109,110,111
4822 410 12295 4822 214 13031
14
Terminal C
Terminal A
15 16 17 18 19 20
112,113
4822 265 11575 4822 464 10513 4822 532 13131 4822 442 00689 4822 321 11486
114, 115, 116
4822 532 13132
Note: Parts of number 100 onwards cannot be ordered separately.
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.
T/S1 TRS 1
R KEEP WARM LAMP BOIL LAMP
INPUT
T/S2
T/S3
KEEP WARM HEATER
MAIN HEATER
R
EXPLODED VIEW
11
1
114
115 12 116 107 108 109 2 8 102 105 103 3 106 110 14 111 113 112 16 17
101
104 18 10 5
19 6
7