Starting Up The Product; Priming The Pump; Shaft Seal Run-In - Grundfos JPA Series Installation And Operating Instructions Manual

3. Starting up the product

WARNING
Flammable material
Death or serious personal injury
- Do not use the pump for flammable
liquids, such as diesel oil, petrol or
similar liquids.
CAUTION
Impurities in water
Minor or moderate personal injury
- Flush the system with clean water to
remove all impurities before you start
the pump.
CAUTION
Hot surface
Minor or moderate personal injury
- Do not run pump continuously with a
closed inlet or outlet valve.
WARNING
Corrosive substance
Death or serious personal injury
- Do not use the pump for aggressive
liquids.
CAUTION
Hot or cold liquid
Minor or moderate personal injury
- Make sure that the escaping hot or cold
liquid does not cause injury to persons
or damage to the equipment.
CAUTION
Hot surface
Minor or moderate personal injury
- Use protective gloves if the liquid or
ambient temperature is higher than
40 °C.
DANGER
Electric shock
Death or serious personal injury
- Do not use the pump in swimming
pools, garden ponds or similar places if
there are people in the water.
Do not start the pump until it has been
filled with liquid.
The pump must not be started more than
20 times per hour.
6
The pump must not run without delivering
water for more than five minutes.

3.1 Priming the pump

1. Remove the priming plug. See fig. 8.
2. Fill the pump with water.
3. Refit the priming plug and tighten by hand.
The pump can now be started.
Fig. 8 Priming the pump
If there is a suction lift, up to five minutes may pass
from the moment the pump is started until it delivers
water. This period depends on the length and
diameter of the inlet pipe.
Do not start the pump until it has been
filled with liquid.

3.2 Shaft seal run-in

The seal faces are lubricated by the pumped liquid,
meaning that there may be a certain amount of
leakage from the shaft seal.
When the pump is started up for the first time, or
when a new shaft seal has been installed, 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, i.e. 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.