Troubleshooting - IMER MORTARMAN 120 PLUS Operating, Maintenance, Spare Parts Manual

that the machine stops as soon as the tank guard is opened.
14.1 Cleaning
Before a long work pause or at the end of the shift, the mixer tank must
be thoroughly cleaned by abundant washing. If you use a high-pressure
hose to clean the machine, do not aim the water jet directly at the plug/
socket connection or power switch.
- When manually cleaning the tank, make sure not to run the
machine.
- Do not dump the waste water on the site.
- If the guards are removed for cleaning, they must be reinstal-
led on completion.
Do not strike the tank with hammers, shovels, etc. Dents reduce the
effectiveness of mixing and also make the tank harder to clean.
14.2 Belt tension
1. Switch off the motor and disconnect the power plug.
2. Remove the belt guard (ref.2, ¿ g.7) by undoing the bolts securing it
(ref.1, ¿ g.7).
3. Loosen the 4 screws (ref.3, ¿ g.7) securing electric motor mount and
pull the belt (ref.5, ¿ g.7) with the screw (ref.4, ¿ g.7) if the tension is cor-
rect, applying a force of around F=1.5 kg at the centre of the belt's free
section should displace it by around f=5 mm (¿ g.8).
- Do not overtension the belt, as this reduces its life and that
of the reducer and motor bearings.
6. Once the belt is correctly tensioned, tighten down the 4 bolts (ref.3,
¿ g.7).
7. Reinstall the belt guard (ref.2, ¿ g.7) with its bolts.
14.3 Replacing the belts
1. Switch off the motor and disconnect the power plug.
2. Remove the belt guard (ref.2, ¿ g.7) by undoing the bolts securing it
(ref.1, ¿ g.7).
3. Slacken off the 4 bolts (ref.3, ¿ g.7) securing the motor mount and
slacken off the belts (ref.5, ¿ g.7) with the screw (ref.4, ¿ g.7) until they
can be slipped off the motor and drive reducer pulleys.
4. Fit the new belts, ¿ rst onto the reducer pulley and then onto the motor
pulley.
5. Tension the belts (ref.5, ¿ g.7) with the screw (ref.4, ¿ g.7): if the ten-
sion is correct, applying a force of around F=1,5 kg at the centre of the
belt's free section should displace it by around f=5mm (¿ g.8).
6. Once the belt is correctly tensioned, tighten down the 4 bolts (ref.3,
¿ g.7).
7. Reinstall the belt guard (ref.2, ¿ g.7) with its bolts.
Check the belt tension again after the ¿ rst 4 hours of operation with the
new belts, and repeat the check every 18-20 hours.
14.6 Removing the outlet guard
1. Undo the bolts (ref.20, ¿ g.1) and remove the guard (ref.24, ¿ g.1).
2. To re¿ t the guard (ref.24, ¿ g.1) align its holes with the mount holes
and reinstall the bolts (ref.20, ¿ g.1).
14.7. REPAIRS
Repairs must be done exclusively by specialised personnel.
Use exclusively original IMER spare parts; modi¿ cations to parts are
strictly prohibited.
- Never start up the mixing machine during repairs.
- If any guards are removed for repairs, ensure they are cor-
rectly refi tted at the end of work.
15. RESIDUAL RISKS AND SAFETY NOTICES
Although the machine is constructed in line with established legislation,
certain residual risks cannot be eliminated and require the use of indivi-
dual safety equipment. The machine is equipped with notices to indicate
the residual risks and how to avoid them.
NOISE HAZARD
Wear ear defenders
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MORTARMAN 120 PLUS
HAND CRUSHING/SHEARING HAZARD
EYE INJURY HAZARD
INCORRECT USE HAZARD
TRAPPING/CRUSHING AND SHEARING HAZARD
ELECTROCUTION HAZARD
Note that the employer is responsible for ensuring his workers use indi-
vidual safety equipment.

16. TROUBLESHOOTING

- CAUTION! All maintenance operations must be performed
exclusively with the machine switched off, with the selector set to
"0" and the power plug disconnected from the mains.
Motor does not start
when switch is turned
Outlet does not open
During mixing, the
blades slow down or jam
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Wear gloves
Wear safety glasses
Read the manual before operating the machine
Do not remove the guards
Do not touch drive components
Danger - electrical power
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Defective power cable
Plug not inserted in
socket correctly
Power cable from
plug to control panel
detached
Loose wire inside motor
circuit board
Loose wire inside motor
circuit board
Limit switch malfunction
Faulty main switch
The overload safety
device has been
activated
Tank guard open
Blocked outlet guard
Belts are worn or slack
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Check power cables *
Ensure correct
connection
Remake the connection *
Remake the connection *
Remake the connection *
Replace limit switch *
Replace switch *
Wait for a few minutes
and then try restarting
the machine
Close tank guard
Remove and clean outlet
guard
Tension or replace the
belts