Oil Check; Changing The Oil - Pentair Jung Pumpen COMPLI 400 E 515/4 BW Instruction Manual

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.
Resetting the maintenance reminder (if available)
Set switches S3 and S4 on the control unit circuit board to
the up position (RESET ON). After approximately 3 se-
conds P6 will flash 3 times.
(If the switches remain in position, the maintenance reminder
is deactivated).
Now set the new reminder interval
1 year , 1/2 year or 1/4 year

Oil check

(Only applies for units 08/2, 20/2, 25/2 and 35/2). First of all, un-
screw 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, in-
cluding 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, 20/2, 25/2 and 35/2). To ensure
operational 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
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 20/2 M, and 700 cm³ 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.
The unit isn't working
If the alarm is triggered and the unit does not work:
Decreased pumping performance
QUICK TIPS FOR REMEDYING
FAULTS
• Check the mains voltage, the fuse and the ground fault cir-
cuit interrupter. Replace defective fuses only with fuses
with the same nominal value! If the fuse triggers again, call a
qualified electrician or our customer support service.
• The internal 2 A glass tube fuse (delay) for the 230/12V con-
trol transformer, the motor contactor and the 230V AC pow-
er supply are faulty. Replace defective fuses only with fuses
with the same nominal value!
• If the mains cable is damaged, it may only be replaced by the
manufacturer.
• If the float switch is obstructed, close the inlet shut-off
valve, open the maintenance cover and clear the blockage.
• The thermostat in the motor windings may have switched
off the system because the pump is obstructed. In this case,
close the shut-off valve at the inlet, drain the tank, pull out
the mains plug, remove the pump module, and clear the
blockage.
• Check that the shut-off valve in the pressure pipe is fully
open.
• If the pressure pipe is blocked, flush water through the pres-
sure pipe to clear it.
• If the non-return valve is blocked, empty the pressure pipe
and clean the non-return valve.
• If the ventilation system is blocked, clean the ventilation
hose that leads from the pump tank and check the drilled
holes.
ENGLISH
15