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- Always operate with the casing closed by key.
Always switch off the Diesel engine before opening
the casing. There are very hot parts, acids (battery) and
flammable liquids (oil and Diesel fuel) inside.
- Wear the required personal protection equipment
before starting work.
Interruptions of more than 30 min. should be avoided, and in
any case reduced to the minimum necessary when using rapid-
drying materials.
A prolonged stop can cause clogging in the material delivery
pipes: no material comes out the sprayer and the pressure
gauge indicates a higher pressure than the normal working
value.
Press the "down arrow" button (Fig. 8, Ref. 12) (the opposite
of the normal work position), the mortar pump motor turns in the
opposite direction and the pipes are depressurised. Stop the
machine as soon as the pipe becomes easy to squeeze (the
pressure gauge reads 0 bar).
Locate the clogging in the hose and eliminate it by striking the
hose with a rubber mallet and completely empty it by hand.
- If necessary, disconnect the sprayer or open the pipe
connections, firstly making sure there is no residual
pressure inside the pipes. The material pressure gauge
must indicate 0 bar and the pipes must be soft, except the
clogged part.
The operator carrying this out must be specially trained in
these procedures.
Reconnect the pipes and sprayer, turn the main switch to the
correct position and restart the machine.
- Do not move the machine when the hopper or mixing
machine are full.
A decrease in material delivery to the sprayer may indicate a
worn pump. Try gradually tightening - one turn at a time - the
screws of the pump clamp (Fig. 9, Ref. 3) located under the
guard (Fig. 9, Ref. 2) and check if that solves the problem.
A
Otherwise, to replace the pump, carry out as follows. Bring the
delivery to minimum and stop the machine in a position where the
eccentric screw drawing bolt (Fig. 9, Ref. 1) can be easily
removed. With the machine empty and clean, and with the engine
switched off, lift the hopper grill (Fig. 9, A), loosen the pump
IMER INTERNATIONAL S.p.A.
PLASTERING MACHINE SILENT 300, SILENT 300A
B
B
1
2
3
Fig. 9
clamping stay bolt nuts, remove the screw drawing bolt (Fig. 9,
Ref. 1) then remove the screw and stator (Fig. 9, B) at the same
time.
To insert the screw in the stator, use the lubricant spray available
from IMER. Never use mineral oil or grease for fitting the screw,
as this may damage the stator. Avoid all benzenes.
Refit the pump making sure to insert the agitator in the special
spaces.
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,
preventing the continuation of work, promptly wash the machine
and pipes. Also, disassemble the pump, remove the screw
from the stator and clean it. On completion reassemble all
components.
13. MACHINE STOPPING AND CLEANING
At the end of work, stop the machine - press the arrow button
at the top and bring the mixing machine operation lever to the
middle position - after completely emptying the mixing machine
and hopper of material.
- Before disconnecting the sprayer or pipes, make sure
there is no residual pressure inside them.
- Open the sprayer air cock, disconnect the sprayer and wash
it thoroughly, cleaning the nozzle with the special tool supplied.
- Disconnect the material pipes from the delivery manifold.
- Open the mixing machine grill and wash it thoroughly.
- If the inside of the mixer has to accessed during
the operation, firstly switch off the Diesel engine.
- Empty the mixing machine by removing the plug (Fig. 11) or
emptying it in the hopper.
- Open the discharge on the bottom of the hopper (Fig. 10)
- Wash the hopper thoroughly.
- Close the hopper discharge and fill the hopper with water.
- Restart the machine for a few seconds until clean water
comes out the manifold: this ensures complete cleaning of the
pump.
32
Fig. 10
Fig. 11
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