BIO RAD 400-0174 Instructions d'exploitation Page 369

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Maintenance – Basic Machine
369
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15.11.6 Checking refrigerant condition and level
Fig. 320:
Note
The quantity of refrigerant is checked using the white ball float.
Loss of refrigerant through hoses in the air conditioning system is unavoidable. Check the
refrigerant level every 200 hours. Check the window (2) of the drier (1) with the engine running
and with the air conditioning system switched on (set to highest cooling action).
If the white float (5) is at the top, the volume of refrigerant is okay.
If the white float (5) is at the bottom, the refrigerant must be topped up (specialist
workshop).
Note
Humidity saturation is checked using the orange indicator pearl.
Moisture in the coolant circuit is collected in the filter desiccator.
If the indicator pearl (3) is orange, the degree of moisture is okay.
If the indicator pearl (3) has turned colourless, the collector unit of the drier must be
replaced (specialist workshop).
Note
Observe the instructions on the label (4) on the dryer (1).
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BM 400 0219
3
5
BM 400 0203
2
1
3
Indikatorperle
im Schauglas
orange=trocken
farblos=feucht
Kundendienst
anrufen
indicator pearl
in sight glass
orange = dry
colourless=wet
call service
4
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