Seko 43651 Manuel D'installation page 10

4.2 Mechanism
Replace the first oil filling after 1500 operation hours and afterwards every 4000 hours.
However replace oil every year .
Check weekly the oil level and, when required, restore the correct level using the same oil; check also for possible
leakages through the lip seal on the piston rod and if necessary replace the lip seal.
ATTENTION!
Please use only oil with these features:
4.3 Pumphead
Don't let the pump running without process liquid.
As minimum every six months, dismount the pumphead as follows:
• Disconnect suction and discharge pipes
• Drain process liquid rom pump head and pipes
• unscrew bolts fixing the pumphead to mechanism
• dismount suction and discharge valves
and carry out he following operations:
• wash thoroughly the suction and discharge valves and verify whether any part is worn or scratched; replace them
if required
• replace plunger packing in case it is worn; grease new seals before assembling
• check the plunger sliding surface where seals operate; the surface should be without scoring or scratches; when
damaged replace the plunger
• Retighten the screws of the pump casing with a torque of 3 Nm as shown below; repeat the crisscross pattern
with a torque of 6 Nm
4.4 Recommended spares
In order to face normal service problems and to avoid possible waste of time, we suggest to keep in stock a small
supply of the following spares:
• One plunger
• Two sets of plunger packing
• One suction valve complete
• One discharge valve complete
When ordering spares, please indicate always the model and the serial number of the pump
SPR0136001
ISO VISCOSITY GRADE 320
Rev. 5.2 EN 8