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– 3 –
(6) Use a three wire type soldering iron including a grounding wire.
Bare copper wire (for body earth)
Working
table
Resistor of 1 M (1/2W)
Earth wire
Fig. 3. Grounding of the working table
2
Screw stop at the screwed
part using a rag plate
Soldering iron
Grounding
wire
Fig. 4. Grounding a soldering iron
Use a high insulation mode (100V, 10M or higher) when ordinary iron is to be used.
(7) In checking circuits for maintenance, inspection or some others, be careful not to have the test probes of the
measuring instrument shortcircuit a load circuit or the like.
Metal plate (of aluminium, stainless steel, etc.)
Staple
Содержание RAM-90QH5
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Страница 19: ... 18 BASE DRAIN PIPE A DRAIN PIPE BUSH 100 mm ABOVE 10 11 ...
Страница 21: ... 20 CONSTRUCTION AND DIMENSIONAL DIAGRAM MODEL RAM 90QH5 Service space ...
Страница 26: ...CIRCUIT DIAGRAM MODEL RAM 90QH5 27 ...
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Страница 36: ... 45 90 23 ...
Страница 42: ... 51 REFRIGERATING CYCLE DIAGRAM MODEL RAM 90QH5 ...
Страница 51: ... 60 3 System power Module Circuit ...
Страница 60: ... 69 Electric expansion valve thermistor NARROW PIPE 5 5 5 5 8 8 8 ...
Страница 72: ... 85 ...
Страница 76: ... 90 Lighting mode self diagnosis lamp Location of self diagnosis lamp 1 RAM 90QH5 ...
Страница 77: ... 91 Lighting mode self diagnosis lamp 2 RAM 90QH5 ...
Страница 83: ...HITACHI PM NO 0371E Printed in Malaysia RAM 90QH5 ...