IMER BOOSTER 15 Manuel D'utilisation Et D'entretien page 37

Fig. 21
14. OPERATION
The hopper safety grid must always be fitted and secured in
place.
Never place materials other than concrete materials in the hopper.
Opening the hopper grill stops the relevant moving parts.
Always check the operation of the safety equipment - in this case,
the electrical safety (Fig. 18 Ref. 2) and the mechanical safety (Fig.
18 Ref. 6).
Wear envisaged personal protection devices before starting
work.
Interruptions exceeding 30min should be avoided, and in any
event these pauses should be reduced to the minimum possible
when using rapid-drying materials
Prolonged shutdown can cause clogging in the material delivery
lines: in this case no material is delivered from the jet and the pres-
sure gauge (Fig. 19 Ref. 9) indicates a higher pressure than the
normal working value.
In this case, turn the switch so its arrow is pointing down (Fig. 19
Ref. 7) (opposite to the normal working position) thus inverting
the timing between the S valve and using the pump in suction to
depressurise the pipes. As soon as the pipeline becomes soft and
flexible (the pressure gauge reads 0 bar), stop the machine.
Locate the point of clogging in the hose and remove by tapping the
hose with a rubber mallet and totally empty by hand. (Fig. 24)
If necessary, disconnect the Spritz Beton jet and open
the pipeline couplings, checking previously if any residual
pressure is present. The pressure gauge (Fig. 19 Ref. 9) must
indicate 0 bar and the pipelines, excluding the clogged sec-
tions, must be flexible. The operator carrying this out must
be specially trained in these procedures.
Reconnect the pipelines and spray jet, set the main switch to the
correct position and restart the machine.
Do not move the machine with the hopper full.
A reduction in material flow to the jet may indicate worn pistons.
Replace them.
Otherwise, to replace the pistons, proceed as follows. Bring the
delivery to minimum and stop the machine in a position which
facilitates working. With the machine empty and clean, and with
the engine switched off, slacken off the tie-rod nuts and raise the
hopper.
Use the lubricant available from IMER when replacing the pistons.
Never use mineral oil or grease for fitting the pistons, as
this may damage them. Avoid all types of benzene.
Whenever the fuel reserve light flashes during work, the machine
will automatically stop in about 20 minutes if refuelling is not carried
out, in order to avoid pointless lost time due to the engine shutting
down due to no fuel.
If an engine, electrical or hydraulic system anomaly occurs, pre-
venting the continuation of work, wash the machine and the pipes
immediately. On completion reassemble all components.
IMER INTERNATIONAL S.p.A.
INDICATOR LIGHT
FLASHING
INDICATOR LIGHT
PERMANENTLY LIT
37