Mixing pump G 4 X FU 230/400V / Part 2 Overview, operation and service
Operation
Possible causes:
Heavily worn mortar hoses
Badly greased mortar hoses
Residual water in mortar hose
Clogging of the pressure flange
Severe restriction at the couplings
Kink in the mortar hose
Leaks at the couplings
Poorly pumping and separated materials
Earlier damage to the mortar hose
Should the pressure in the mortar hose exceed 60 bar in
the event of a machine failure due to material clogging,
replacement of the mortar hose is recommended as there
might be damage in the hose that is not externally visible.
5.14.6
Removal of clogging in hoses
WARNING
Danger from discharged material!
Never detach hose couplings if the feed pressure has
not been fully released! Material to be conveyed can be
discharged under pressure and cause injuries particularly
to the eyes.
Persons commissioned with the cleaning of clogged
hoses have to wear personal protective equipment
(protective goggles, gloves) for safety reasons, and must
position themselves in such a way that they cannot be hit
by discharged material. Other persons have to clear the
area.
5.14.6.1 Let the pump run backwards
1
2
3
5
4
Figure 89: Reverse operation
Operation 230V
1. Turn the main reversing switch (1) to position "0".
2. Turn the booster pump selector switch (2) to the "0" position.
3. Turn the star wheel selector switch (3) to the "0" position.
4. Turn the pump motor selector switch (4) to the "0" position.
5. Switch off the air compressor using the green toggle switch.
6. Turn the main reversing switch (1) to position "I".
7. Press the green pushbutton (5) control voltage "ON".
8. Switch selector switch of the pump motor (4) to the "left" position,
until the pressure at the mortar pressure gauge has dropped to "0
bar".
9. Turn the pump motor selector switch (4) to the "0" position.
10.Turn the main reversing switch (1) to position "0".
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