28
ELRO
®
Pumps for hazardous materials GUP 3-1,5 and GP 20/10Ex
Fig. 18 Disassembly of pumping hose
8. Pull the pumping hose on the pressure
side back into the housing, then pull it
back on the suction side and take it out
(Fig. 18 and Fig. 19).
5.2.2 Inspecting the inside of the pump
Before installing a new pumping hose clean
the inside of the pump housing and check
for damage.
Replace damaged parts.
5.2.3 Installing the new pumping hose
The new pumping hose is installed in
reverse order of disassembly.
1. The connecting sockets must be
fastened to the hose by means of a
hose assembly unit. Special hose
clamps can be delivered instead of the
clamping strap.
The hose must be pushed onto the
socket, so that the end of the hose
touches the collar around the complete
circumference.
Each socket is fastened with one hose
clamp.
In order to achieve an optimal clamping
force the clamping strap must be placed
around the hose twice and tightened.
After assembly the strap must be
parallel to the end of the hose, on side
of the loop (buckle) must be flush with
the end of the hose.
Please make sure that the loops of the
socket fastening on a hose are on the
same side.
In the pump the sockets must be
Fig. 19 Disassembly of pumping hose
GP. 19
Fig. 17 Disassembly of holding claws
