Maintenance and Servicing
109030
23
6.2.2.3
Disassembly - MPC 301 Z
1. Disconnect the power supply and ensure that it cannot be switched on again.
2. Open the fittings
(10)
of the hoses
(11)
on the pump body with the SW 17 open spanner.
3. Remove four cylinder screws
(1)
from each connection head
(2)
with an Allan key, size 4.
4. Lift off the connection head with insert
(2)
and the pump head
(6)
. The valves
(3; 4)
,
o-rings
(5)
and diaphragm
(7)
are now freely exposed.
5. Loosen the diaphragm
(7)
at the strain washer
(8)
by turning the size 3 pin type face
wrench anticlockwise.
6. Clean the valves
(3; 4)
, the pump head
(6)
and the diaphragm
(7)
with a soft cloth and
acetone.
7. Check that the drive is in good working order.
Fig. 7a Disassembly, Assembly
6.2.2.4
Assembly
– MPC 301 Z
1. Place the pump so that the diaphragm
(7)
is lying in a horizontal position.
2. Use the size 3 pin-type face wrench to tighten the pressure disc
(9)
, the diaphragm
(7)
and the strain washer
(8)
with the correct torque of
5 - 6
Nm.
3. Bring the connecting rod
(see
F
ig. 12)
and the diaphragm
(7)
into the central position.
4. Replace the pump head
(6)
. (Observe the fixing bore on the edge!)
5. Insert the valves
(3; 4)
(see C and D fig. 7b)
and the o-rings
(5)
.
Ensure that they are lying completely flat. Do not insert the burred side facing the sealing
surface. Align the connection head with pin flush to the fixing bore at pump head.
6. Tighten the four cylinder screws
(1)
symmetrically with a torque of 3 to 4 Nm.
7. Reattach the hose connections
(11)
with fittings
(10)
.
Please pay attention
to the valve
arrangements C and D!
A
- Connection
suction side
B
- Connection
pressure side
C
- Valve (400656)
D
- Valve with hole
(400656-4)
Fig. 7b Valve arrangement
