Grundfos POMONA PO07, Installation And Operating Instructions Manual

Page: 9 / 104

English (GB)
9
11. Maintenance
Instructions as to maintenance, dismantling and assembly, see
service instructions on www.grundfos.com.
11.1 Lubrication
The pump is equipped with a double-seal system. The shaft seal
is resistant to heating oil, but not to petrol or benzene.
Semiautomatic lubrication using lubricators prevents wear of the
seal. The entire seal system is filled with lubricant. Refill with a
high-viscosity gear oil or semi-liquid grease such as amprolium.
To adjust the lubricator, loosen the lock nut by four turns. Turn the
upper section four turns down and lock it with the lock nut.
If the upper section is screwed home in the lower section, the
lubricator is empty and must be refilled. Remove the lock nut.
Unscrew the upper section and remove the piston. Grease the
piston lightly and refit it. Fill the lower section with lubricant up to
the lip. Screw the upper section four turns into the lower section
and lock it with the lock nut.
When heating oil and diesel oil are pumped, the lubricator is not
required. Fit an angled fitting threaded R 1/8 with leakage pipe
instead and lead the leakage pipe to a collecting tray. This makes
it possible to recognise immediately when the shaft seal starts to
leak. This prevents the pumped liquid from penetrating into the
ground.
Note that the motor must meet safety regulations.
Petrol and diesel engines should be maintained according to the
manufacturer's instructions.
11.2 Shaft seals
11.3 Motor bearings
As standard, the pumps are equipped with motors without
lubricating nipples. The motor bearings are therefore
maintenance-free.
If the pump is equipped a motor with lubricating nipples, use a
lithium-based grease.
Observe the manufacturer's instructions for petrol and diesel
engines.
11.4 Roller bearing grease
Basis: lithium-loaded, temperature range -20 °C to +120 °C,
dropping point approx. +185 °C.
12. Frost protection
If the pump is to be taken out of service for an extended period,
we recommend to turn the pump shaft by hand from time to time
to prevent the impeller from seizing up. If there is a risk of frost,
the pump must be drained by removing the drain plug.
Warning
Switch off the power supply before carrying out
maintenance. Make sure that the power supply
cannot be accidentally switched on.
Observe the manufacturer's instructions for petrol
and diesel engines. Maintenance should only be
performed by trained staff.
Caution
Shaft seals are maintenance-free and work with
practically no leakage. In the event of heavy or
increasing leakage, the shaft seal must be inspected
without delay. If there is visible damage on the
sealing surfaces, replace the entire shaft seal.
Handle the shaft seal with care. See also section
14. Service .
Manufacturer Grease
Aral HL 2
BP BP Energrease LS 3
Calypso Calypso H 443 GF
Castrol SPEEROL AP 3
Fina Fina Marson HTL 3
Shell Shell Alvania-Fett R 3
Esso Beacon 3
Fuchs FWA 160 or 220
Gasolin DEGANOL LW 3
Mobil Oil Mobilux 3
Warning
Make sure that liquid flowing out of the pump cannot
cause a hazard to persons or damage to the motor or
other components. In hot-water installations, pay
special attention to the risk of injury caused by
scalding hot water.
Take combustion engines out of service according to
the manufacturer's instructions.