MAI International
GmbH
MACHINE MAINTENANCE
Stop the machine by pressing the red “STOP” but-
ton on the control cabinet, and turn the main switch
to “0” to prevent the system from being started ac-
cidentally.
Ensure that the motor housing surface and fan cowl
guards are always kept clean so that dust and dirt
do not impair the motor output.
Undo the eccentric clamp on the mixing chamber so
you can move the motor and pump parts away to
the side.
If the motor has become wet, dry it before starting
and have the insulation checked by a technician.
Remove the pump part from the machine and dis-
mantle it into its main components of pump flange,
pump outlet, rotor, stator and pump cleaner.
Change the lubrication on the main drive motor
gears after a maximum of 10,000 operating hours
or after three years at the latest.
Mixer motor: grease, Shell S 420 F
Regularly check that the wearing parts, such as
PU-screw, mixer and worm pump, are in good con-
dition and dimensionally true, as the function of the
machine, the actual delivery rate and the attainable
maximum pressure all depend on the condition of
these components.
Carry out the following maintenance work daily:
Remove the mixer and the safety screen from the
machine. Clean all soiled parts carefully with water.
o lubricate all threads and keep them clean
Danger of jamming fingers when
tilting (opening) and closing the
motor flange.
The MAI pump m400NT complies
with the provisions of Protection
Class IP44 in accordance with DIN
40050 and must therefore not be
cleaned with water jets.
If the machine is not required for a
longer period, dismantle the rotor
and stator from the eccentric worm
pump and lubricate them with MAI
silicone grease or MAI silicone
spray. Reassemble the compo-
nents and replace the machine.
!
CAUTION
o spray pump lubricant on rotor and stator
The mechanical and electrical condition of the ma-
chine must be inspected by qualified personnel at
least once a year.
!
DANGER
PROCEDURE IN THE EVENT
OF FROST
If frost is expected always clean the entire machine
first and then follow the procedures described be-
low.
Disconnect the water supply and remove the mixer
from the mixing chamber in the mortar mixing
pump. Disconnect the water supply from the water
system.
Open the water drainage valve and drain cocks on
the machine.
Connect the power supply and turn the main switch
to pos. “1”.
© Copyright 2003 V20/10/03 Page 22
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