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Idiomas disponibles
Idiomas disponibles
Maintenance and Servicing
When maintaining these units and having such situa-
tions where personnel could be hurt by moving parts or
by live electrical parts the pump must be isolated by totally
disconnecting the electrical supply. It is imperative that the
unit cannot be re-started during the maintenance operation.
Do not work a pump that is at its normal operating tempera-
ture as there is a danger from hot parts or hot lubricant.
1. Air filtration
The capacity of the pump can become reduced if the air
inlet filters are not maintained correctly.
Filters on the suction side: The filter insert base (f
removed from the filter housing (e) by undoing the screws (s
the filter housing cover (d). Replacing the filter cartridges (b) on
the filter base can be achieved by removing the screws (s
the gasket (c) again for re-assembly (picture
Filter for Gas ballast: All pumps are equipped with a gas ballast
valve (U). The built in filter cartridge must be cleaned regularly
depending upon the amount of contamination. By removing the
screw (g) and plastic cap (h) the filter elements can be removed
for cleaning. The filter cartridge (f
with compressed air. Re-assemble in reverse order (picture
2. Lubrication (picture
)
Check the oil level regularly depending upon the operating hours.
First oil change after 500 operating hours (see oil drain plug (K)). Further changes every 500 - 2000
operating hours. The oil change times should be shortened if the application is dusty. Drain the oil also from
the oil cooler (see oil drain plug (K
Only oils corresponding to DIN 51 506 group VC / VCL or a synthetic oil (obtainable from Rietschle) should
be used. The viscosity must correspond to ISO-VG 100 according to DIN 51 519.
The recommended Rietschle Oil types are: MULTI-LUBE 100 (mineral oil); SUPER-LUBE 100 (synthetic
oil) (see oil type plate (M)).
When the oil is under a high thermal load, e.g. ambient or suction temperatures over 30°C, unfavourable
cooling or operating with increased speed etc., the oil change time can be extended by using the recom-
mended synthetic oil.
Old and used oil must be disposed of corresponding with the relevant health, safety and
environmental laws.
If the oil brand is changed, the old oil must be drained completely from oil separator housing and
the oil cooler.
3. Oil separation (picture
)
Extremely blocked filter elements will result in an increased pump temperature and will cause
discolouration of the lubricant.
The oil separator elements may become contaminated after a long period of operation which can result in
high pump temperature and motor overload. We therefore recommend to change the filter elements (L)
every 2000 operating hours or when the filter back pressure is in excess of 0.7 bar (see back pressure gauge (Y) ➝ optional extra). It is not possible
to clean these elements.
To change filters: Remove maintenance cover (W). Remove plastic fixings (t) and exchange the elements (L). If possible re-use the o-ring for
reassembly. Re-assemble in reverse order.
) can be
2
) on
2
). Use
3
).
) can be cleaned by blowing out
3
).
)).
1
e
d
Y
L
t
s
f
c
b
s
2
2
3
f
g
3
h
W
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