Changing The Oil - Pentair Jung Pumpen COMPLI 108/2 ME Instructions De Service

ENGLISH
WARNING!
Before carrying out any works: disconnect the pump and the
controls from the mains and take steps to ensure that they
cannot be energized again.
WARNING!
Check the cable for mechanical or chemical damage. Damaged
or kinked cables must be replaced by the manufacturer.
We recommend that the following works be included in the
service:
1. Check the connection points for watertightness and in-
spect the areas surrounding the unit and the fittings.
2. Operate the shut-off valves and check that they move eas-
ily. Adjust and grease them if necessary.
3. Open and clean the swing-type check valve; check the seat
and ball (valve)
4. Clean the pump and the pipes where they connect to the
unit; check the impeller and the bearings.
CAUTION!
5. Worn impellers can have sharp edges.
6. Oil check. If necessary top up or change oil (if oil chamber
available).
7. Clean the inside of the tank (as necessary, or if especially
required); remove any grease, for example.
8. Check the condition of the collecting tank.
9. Flush the system through with water once every 2 years.
10. Inspect the electrical section of the unit. The control unit
itself is maintenance-free, but if a rechargeable battery is
fitted, then it should be checked regularly to ensure that it
is in good working order. To do so, unplug the unit from the
mains and lift the float of the level controller slowly by hand
and hold it there until the alarm is triggered. In addition,
clean the float if necessary.
When all the servicing tasks have been performed, carry out a
test run and then put the unit back into operation. The service
must be documented, giving details of the important data and
of all the tasks carried out.
Oil check
(Only applies for units 08/2, 25/2 and 35/2). First of all, unscrew
the hexagon screws or Allen screws around the pump and lift
the pump and impeller off the tank. The drain plug is labelled
"Öl". In order to check the mechanical seal, the oil, including any
residue, must be drained from the oil reservoir and collected in
a clean measuring container.
• If the oil is contaminated with water (milky), an oil change
must be carried out. Check again after a further 300 operat-
ing hours, but at the very latest after 6 months!
• However, if the oil is contaminated with both water and pol-
lutants, then not only the oil must be replaced, but the me-
chanical seal as well.
For monitoring the oil reservoir, it is also possible to retrofit the
electrode of our "DKG" seal leak detector in place of the "DKG"
sealing screw.

Changing the oil

(Only applies for units 08/2, 25/2 and 35/2). To ensure opera-
tional liability, the first oil change should be carried out after
300 operating hours, with further oil changes carried out after
every 1000 operating hours.
If the number of operating hours is very low, an oil change
should still be carried out at least once a year.
If wastewater with strongly abrasive constituents is being
12
pumped, the oil changes should be carried out at correspond-
ingly shorter intervals.
Use HLP hydraulic mineral oil, viscosity class 22 to 46, e.g. Mo-
bil DTE 22, DTE 24, DTE 25, to replace the oil in the oil reservoir.
The quantity of oil required is 380 cm³ for the MultiCut pumps
UC 08/2 M and UC 25/2 M, and 1000 ml for the MultiFree pumps
UC 25/2 BW and 35/2 BW.
NOTICE! The oil reservoir may only be filled with the specified
quantity of oil. Overfilling will result in the pump being rendered
inoperable.
Checking the cutting clearance
Only for pumps with cutting system. The housing screws for
the pump, and the connecting and fixing screws of the instal-
lation must be checked to ensure they are fixed securely. They
should be tightened if necessary.
If the pump performance decreases, or if increasingly loud
noises can be heard during operation, or if the cutting perfor-
mance decreases (the pump tends to become blocked), the
impeller and cutting system must be checked for wear by an
expert and replaced if necessary.
Using a suitable tool, e.g. feeler gauge, the cutting clearance
between the cutting rotor and the cutting plate can be meas-
ured. A cutting clearance of over 0.2 mm must be reduced.
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 ad-
justing 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.