Pentair Jung Pumpen MULTICUT 08 Series, Instruction Manual

Page: 12 / 100

12
ENGLISH
Adjustment of the cutting clearance
1. Block the cutting rotor with a piece of wood and unscrew
the central hexagon socket screw.
2. Take off the compression piece, the cutting rotor and an
adjusting washer and then attach the compression piece
and the cutting rotor again.
3. Block the cutting rotor and tighten again with the hexagon
socket screw (tightening torque 8 Nm).
4. Check the freedom of movement of the cutting rotor and
the cutting clearance again (max. 0.2 mm).
If the cutting clearance is still too big, a further adjusting
washer must be removed. Steps 1-4 must be repeated.
Cleaning
CAUTION!
Worn impellers can have sharp edges.
To clean the impeller and the spiral housing first of all remove
the compression piece and the cutting rotor as described
above. Then unscrew the 4 hexagon socket screws and remove
the spiral housing.
The impeller and the spiral housing can now be cleaned. After
this fit the individual components again and adjust the cutting
clearance.
To clean the pump chamber a flushing pipe can be fitted as and
when required. Type I-M is screwed into place immediately in
front of the flange of pump 08/2 M. With the MultiCut 20/2 M,
the “Luft” (Air) sealing screw is removed and the Type 0 flushing
pipe is screwed in.
Notice! If the wrong screws are unscrewed, the oil will run out
of the oil reservoir.
Tightening torque M
A
for A2 screw materials
for plastic screw Torx Plus® 25 IP 5x12 MA = 2,5 Nm
for M 6 M
A
= 8 Nm
for M 8 M
A
= 20 Nm
for M 10 M
A
= 40 Nm
for M 12 M
A
= 70 Nm
for M 16 M
A
= 160 Nm
WHAT TO DO IN THE EVENT OF ANY
PROBLEMS
Pump does not work
• Check mains current (do not use a pin gauge)
• Fuse faulty = may be too weak (please refer to Electrical
Connection)
• Mains supply cable damaged = repair to be carried out by
manufacturer only
Pump runs but does not pump
• Empty pressure pipe or hose to allow the non-return valve
to open and let the air escape from the spiral housing.
Cutting system blocked
• Check the cutting system and readjust or replace as necessa-
ry.
Impeller blocked
• Clean spiral housing and impeller.
Decreased pumping performance
• The impeller is worn out = replace it
• Wrong direction of rotation = change 2 phases of the power
supply