Pfeiffer Vacuum DUO 255, Руководство по эксплуатации

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Maintenance
23
Checking the oil filter
The oil filter described here is integrated into the pump‘s oil circulation. Alternative, an
additional external oil filter can be used.
Fig. 13: Dismantle and clean oil filter
 Unscrew screws 293 and remove cover 14, use tapped holes if necessary; observe
O-ring 264.
 Unscrew screws 292 from flange 77 and lift flange with oil filter 59 out of the pump;
pay attention to dripping operating fluid.
 Dismantle filter unit in accordance with figure and clean oil filter 59 in petrol or similar
cleaning agent.

Blow out filter with air and dry.

Assembling is carried out in reverse order.
 Fill up with operating fluid to the middle of the sight glass.
– Filling quantity approx. 25 l of operating fluid.
7.3 Cleaning and re-setting the silencer
If the silencer is not functioning, a knocking noise becomes audible at final vacuum. This
does not damage the pump, although can have a negative affect at the installation loca-
tion.
NOTICE
Also check and clean if necessary the oil filter every time you change the oper-
ating fluid.
 In case of maintenance, always change the oil filter
14 Cover
59 Oil filter
77 Flange
92 Spacer sleeve
94 Washer
95 Screw
264 O-ring
292 Screws
293 Screws
293
292
77
59
92
94
95
264
14