5. Vent the pump by means of the vent valve in
the pump head. At the same time, open the
outlet isolating valve a little.
TM066886
6. Continue to vent the pump. At the same time,
open the outlet isolating valve a little more.
TM066887
7. Close the vent valve when a steady stream of
liquid runs out of it.
TM066888
8. Completely open the outlet isolating valve.
TM072337
7.2 Shaft seal run-in
WARNING
Corrosive liquids
Death or serious personal injury
‐
Wear personal protective
equipment.
WARNING
Toxic liquids
Death or serious personal injury
‐
Wear personal protective
equipment.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
‐
Wear personal protective
equipment.
Make sure that a leakage does not
cause damage to the equipment.
The seal faces are lubricated by the pumped
liquid, meaning that there may be a certain
amount of leakage from the shaft seal.
When you start the pump for the first time, or
when you install a new shaft seal, a certain run-in
period is required before the leakage is reduced
to an acceptable level. The time required for this
depends on the operating conditions, that is every
time the operating conditions change, a new run-
in period will be started.
Under normal conditions, the leaking liquid will
evaporate. As a result, no leakage will be
detected.
7.3 Operating the product
For operating the product safely, observe the
following hazard statements.
WARNING
Contamination when pumping
drinking water
Death or serious personal injury
‐
Do not use the pump for drinking
water if the internal parts have
been in contact with particles or
substances not suitable for water
intended for human consumption.
WARNING
Airborne noise
Death or serious personal injury
‐
Wear personal protective
equipment.
The sound pressure levels listed in the appendix
relate to airborne noise emitted by pumps with
motors fitted by Grundfos.
WARNING
Too high pressure and leakage
Death or serious personal injury
‐
Do not run the pump against a
closed outlet valve.
22
English (US)
