29
ELRO
®
Pumps for hazardous materials GUP 3-1,5 and GP 20/10Ex
1. After removing the pumping hose loo-
sen both hexagon screws (part-no.
1019, Fig. 13) on top of the pump so
far that the split separating part can be
taken out of the holder.
2. Insert the new separating part into the
holder with the gearing towards the
inside (Fig. 20).
Make sure that the separating part
neatly rests against the housing wall
and is flush at the joint.
3. Tighten by hand to allow the separating
part to align itself.
Fasten the holder only after the pump
cover has been assembled.
The separating part must rest
properly against pump cover
and back wall of housing.
assembled in such a way, that the loops
are always furthest away from the rotor.
Notes on the correct use of the hose
assembly unit can be found in the
respective operating instructions.
2. Slide a new O-ring over each connec-
ting socket.
Note: For easier assembly of the
hose we recommend to remove the
separating part.
3. Push one end of the hose into the ope-
ning on the suction side.
4. Insert the hose into the housing and
push the other end through the opening
on the pressure side.
5. Attach and tighten both holding brak-
kets.
5. Assemble and tighten the rotor.
6. Stand the pump with the pump head
facing upward.
7. Fill the housing with 1 litre of silicone oil
M 350.
8. Lay a new O-ring on the pump cover.
9. Close the pump cover and tighten the
screws crosswise.
10. Stand the pump up as normal
5.3
Replacement of separating part
The installed separating part has the func-
tion of creating the vacuum in the pump
housing and provides a protective layer
between rotor and pumping hose. When
changing a hose the separating part should
always be examined for possible damage.
This should be done before installing the
hose. If damaged it must also be replaced.
Saugseite
Fig. 20 Installation of separating part
1 Separating part
2 Holder for separating part
