Do not turn on the power supply until the pump has been
filled with liquid.
The number of starts and stops must not exceed 20 times
per hour.
The pump must not run without delivering water for more
than 5 minutes.
Only use the product for the intended use and for the
pumped liquids stated in these installation and operating
instructions.
Related information
5.3 Intended use
5.4 Pumped liquids
4.1 Priming the product
Always tighten the priming plug by hand.
1. Unscrew the priming plug.
2. Fill the pump with water.
3. Refit the priming plug and tighten by hand.
TM072401
4.2 Starting up the product
After installing the product, do the following:
1. Open all isolating valves. Make sure that the water supply is
sufficient on the inlet side of the pump.
2. Turn on the power supply to the pump, and the pump will start.
If there is a suction lift, it can take up to five minutes before the
pump delivers water. This period depends on the length and
diameter of the inlet pipe.
3. Open the tapping point that is highest or furthest away from the
pump to let out air trapped in the system.
4. When water flows through the tapping point, close it.
5. Startup is completed, and the pump is ready for operation.
4.2.1 Startup of JP PM
For JP pumps with pressure manager, please see the PM 1/PM 2
quick guide for instructions on how to start up the product.
QR96804589
http://net.grundfos.com/qr/i/98388184
If a pressure is not built up in the system within five
minutes after startup, the dry-running protection will be
activated and the pump will be stopped. Check the
priming conditions of the pump before attempting to
restart it.
4.2.2 Shaft seal run-in
The shaft seal faces are lubricated by the pumped liquid. A slight
leakage from the shaft seal of up to 10 ml per day or 8 to 10 drops
per hour may occur. Under normal conditions, the leaking liquid will
evaporate. As a result, no leakage will be detected.
When the pump is started for the first time, or when the shaft seal
has been replaced, 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.
Leaking liquid will drain through the drain holes in the motor flange.
Install the product in such a way that leakage cannot cause
undesirable collateral damage.
5. Product introduction
Grundfos jet pumps and boosters are designed for domestic use
and ensure a constant supply of clean water to households and
gardens as well as light commercial applications.
JP
JP is a self-priming, single-stage centrifugal jet pump. The jet pump
has excellent suction capacity and is designed for long and trouble-
free operation. The built-in ejector with guide vanes ensures
optimum self-priming properties. JP is small and compact, and the
lifting handle makes JP handy and easy to carry. The pump housing
is made of stainless steel.
JP Boosters
JP Boosters are compact systems for pressure boosting with
pressure control. The pressure control gives more comfort to the
user, as it allows the pump to start and stop automatically according
to demand.
JP Boosters are available in the following variants:
• JP PM: a jet pump with a pressure manager (Grundfos PM 1)
• JP PT-V: a jet pump with a vertical pressure tank and a
pressure switch
• JP PT-H: a jet pump with a horizontal pressure tank and a
pressure switch.
AISI 316 variant
A special variant of the JP pump is available with components
made with a higher stainless-steel grade. This pump is especially
suitable for pool-cleaning applications.
11
English (GB)
To Next Page
Loading...
