KSB Amarex N, Operating Manual

Page: 43 / 72

7 Servicing/Maintenance
43 of 72
Amarex N
7.2.2.1.4 Changing the lubricant
7.2.2.1.4.1 Changing the lubricant — versions YL and WL
WARNING
Lubricants posing a health hazard and/or hot lubricants
Hazard to persons and the environment!
▷ When draining the lubricant take appropriate measures to protect persons and
the environment.
▷ Wear safety clothing and a protective mask, if required.
▷
Collect and dispose of any lubricants.
▷ Observe all legal regulations on the disposal of fluids posing a health hazard.
Draining the lubricant
1.
Position the pump set as shown.
2563:107
2563:106
903
411
a) b)
Fig. 19:
Draining the lubricant a) Versions YL and WL for pump size 50-170... and
65-220; b) Versions YL, WL
2.
Place a suitable container under the screw plug.
WARNING
Excess pressure in the lubricant reservoir
Liquid spurting out when the lubricant reservoir is opened at operating
temperature!
▷ Open the screw plug of the lubricant reservoir very carefully.
3.
Undo screw plug 903 with joint ring 411 and drain off the lubricant.
NOTE
Paraffin oil is bright and transparent in appearance. A slight discolouration, caused
by the running-in process of new mechanical seals or small amounts of leakage
from the fluid handled, has no detrimental effect. However, if the coolant is
severely contaminated by the fluid handled, this suggests a defect at the
mechanical seals.
Filling in the lubricant 1.
Position the pump set as shown.