Bomag BW 177 D-4 Operating Instructions Manual page 102

Every 500 operating hours
Checking the refrigerant level
Start the engine.
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Fig. 155
Turn the rotary switch for the cab ventilator
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(Fig. 155) to position "1".
Fig. 156
Choose a cooling temperature with the rotary
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switch for the air conditioning system (Fig.
156) in the blue section.
Open the air outlet nozzles.
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Check, whether the out flowing air is noticea-
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bly cooler.
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Note
The adjusted temperature must be below the actu-
al temperature inside the cabin, so that the com-
pressor will be switched on.
102
Fig. 157
Check whether the white float (Fig. 157) inside
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the inspection glass of the drier/collector unit
floats right at the top.
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Note
The refrigerant level is correct.
Fig. 158
If the white float (Fig. 158) inside the inspec-
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tion glass of the drier/collector unit floats at the
bottom, inform the service department.
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Note
The refrigerant level is not correct.
Refrigerant must be filled up, if necessary
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check the air conditioning system for leaks.
BOMAG BW 177 D-4