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, gardens and light commercial
applications.
JP
JP is a self-priming, single-stage centrifugal jet pump.
The jet pump has an 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 and saltwater applications.
TM072474
Left to right: JP PT-V, JP PT-H, JP PM and JP
5.1 Product overview, JP
TM072509
14
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