MullToa 65ai User manual

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Servicemanual MullToa 55/65ai

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Contents
Page
3-4 Update software, with pcb box
5 Put display in service mode, for information
6 Remove top part
7 Disconnect and connect wires/cables, terminal block
8-9 Remove Electrical panel
10-11 Replace Fanmotor
12-13 Replace shear pin
14 Adjust level indicator, liquid
15 Replace magnet sensor seat

3
Update software with pcbbox
3. Remove the cover located on
the back of the toilet.
4. Gently pull out the cable (visible
inside) so you can access the
connector.
5. Connect the pcb-box to the con-
nector. The green indicator lights
up to show pcb-box is connected.
The toilet will first switch off and
then restart.
2. Keep the toilet running
1. Move the toilet away from the
wall.

4
Update software with pcb box
8. Gently disconnect the box.
Put the cable back inside and re-
place the cover.
6. Press and release the white
button on the pcb-box.
7. The toilet turns off and a red
light on the box indicate the
software being updated. When
its done, the red light goes off
and the toilet restarts.
The updating is finished.

5
Put the display in service mode
1. First, press top button A and
then lower button B. Hold
both buttons down for about
10 seconds. A new meny will
be shown on the display
2. Shift meny by pressing but-
ton A
1. In the first window you will see Besök = Visits
D = number of visits last 24hours
V = number of visits last week
2. %D shows the liquid level during the period, first step
is no liquid N0 and last step is full, N4.
Five steps overall and shown in % for each step
3. Program version from 2018 its 1.09
4. Indicator B (Givare)
o = Mixermotor
l= Seatswitch for mixermotor
m= Level indicator compost volume
n= Liquid level tray (N/0 = no liquid) (N4= liquid
level high)
5. Utg. C indicates if sensors are acivated or not. Capital
letter = activated (running) Small letter = not activated
M= Mixer motor
F= Fan motor
B= Bottom heater
L= Top heater

6
Remove top part
NOTE! Before any service inside the toilet should be done the power must
be disconnected.
2. Remove the screw on the back of the toilet
holding the top part.
3. Remove the nut in front, under the toilet seat
(holding the compost cover). Use a
regular screwdriver.
4. Lift the top part straight up.
5. When putting the top part back, make it
gentle and straight down.
6. Make sure that rubber coupling and the nut
holding the compost cover goes through the
openings and press gently the top part down.
Be careful with the push buttons on the dis
play.
7. Put the nut holding the compost cover and
the screw holding the top part back.
1. Move the toilet away from the wall.

7
Disconnect and connect wires, terminal block
2. Use a small regular screwdriver 2 -3
mm
3. Push the screwdriver into the hole
above the wire connection. Push
gentle and the lock that keeps the
wire will release. Gently pull the wire
while pushing the screwdriver.
4. When the wire is to be refitted it is
done in reverse. Push the screw-
driver into the hole above the
connection, you feel the spring
release, then put the wire into the
opening. When the wire is in place,
remove the screwdriver and the wire
is fastened. Pull the wire to check
that it is securely fastened.
1. Remove top part (see page 6)
5. Put the top part back on.

8
Remove Electrical panel
2. Loosen the quick release contact
for the stirrer motor.
Loosen the 3 contacts on top
of the main pcb board on the
back
Note the order of these.
4. Remove the cable to the level indicator.
3. Loosen the connection to the bottom heater.
Either by loosening the wires in the terminal
block (picture) or with quick release contact
(depending on mo del). Terminalblock, see in
structions on page 6
Sid 1/2
1. Remove the top part
5. The remove the four screws that hold
the electrical panel.

9
Remove the Electrical panel
6. Remove the panel from the toilet.
Sid 2/2
7. To put the panel back, follow the
points above, in reverse.
8. Always check the function of the
replaced component and the level
indicator before the top part is put
back. The rod should easily move up
and down. Connect the power and put
the display in service mode (see in
structions, page 5) reading "Sensor B”
and then lift the rod to adjust the
check the level sensor if necessary
(page 16) , read the letters that indi
cate activity.
9. Put the top part back on.

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Replacing Fanmotor
1. Remove the top part ( page 6)
2. Remove the electrical panel
(page 8 and 9). Pull off the big fan
blade at the back of the panel.
Pull the fan blade off the shaft by
hand without prying.
5. Remove the 2 nuts and washers that
hold the motor.
3. Pull the quick connector or
spade connectors (depending on
model) to the power supply.
4. Pull off the ground wire.

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Replacing Fanmotor
6. Remove the fan motor
7. Put in the new motor and make
sure that the rubber gasket is
centered. Fasten the two nuts and
washers holding the motor.
10. Put the electrical panel back,
fasten with four screws. Test it be-
fore putting the top part back on.
8. Press the new fan blade onto
the shaft.
9. Connect the wires.

12
Replacing shearpin
2. Loosen the quick contact to stirrer motor
3. Loosen the cable from pcb board and the
power wires.
4. Loosen the 4 screws holding the stirrer motor
(the gearbox).
5. Lift the motor.
1. Take the top part off (page 6).

13
Replace shearpin
6. Remove the old shear pin, use a hammer
and the new shear pin. Make sure that the shaft
is resting on something solid.
7. Put in a new shear pin. Use a
hammer to knock it in.
8. Put the motor back and make sure
that the bottom rake is in the correct
position before mounting the motor.
9. Put the top part back on.

14
Adjusting the liquid level sensor
3. Check the height of the indicator.
Adjust if it is not in the center of the
lowest sensor on the pcb card.
4. This is done by loosening the screw
that holds indicator in place.
5. Adjust the height so that the center of flat
side of the indicator is in front of the sen
sor on the pcb-card. Fix indicator by
tightening the screw.
2. Make sure that the rod is standing
on the float in the humus tray. The tray
has to be empty and the float in
position. Use a flash-light.
6. To make a function control;
Turn the power on.
Put the display in service mode (page 5) and go to the me-
nu ”Givare B”.
It should be in N0 from start and when you lift the
levelindicator upward, then the display will switch to N1,
N2, N3 and to highest level N4
1. Take the top part off (page 6)
7. Put the top part back on.

15
Replace magnet sensor seat
1. Take the top part off (page 6)
2. Remove the 2 philpsscrews holding
the console above the motor
3. Disconect the contact in the pcb
(magnet sensor)
4. Remove the screws holding the pcb
board
5. Mount the new pcb (magnet sensor),
put the contact and consol back in re-
versered order
6. Mount the top part and test.