Installation - Pentair JUNG PUMPEN MULTICUT 35/2 M Tan, EX Instruction Manual

ENGLISH
nating current pumps are unsuitable as
a rule.
ATTENTION! For physical reasons,
pumps may not be operated at a higher
frequency than that shown on the type
plate. If the frequency increases beyond
the value on the type plate, the power
input increases and the motor is then
overloaded.
For special models of three-phase
pumps that are designed for frequen-
cy converter operation, the motor type
shown on the type plate is labelled with
an additional "K" (e.g. D90-2/75 CK).
These pumps also have a sticker on
the end of the cable that indicates their
suitability for use with a frequency con-
verter.
These special motors are fitted with
PTC thermistors as winding protectors.
Voltages of more than 2.5 V may not be
connected to the winding protection ter-
minals 40 and 41! For explosion protect-
ed pumps, a type-tested tripping unit
that complies with the EU type-testing
requirements is also necessary.
Rotational direction
Not applicable for alternating current
pumps. The rotational direction must
be checked before installation! If the ro-
tational direction is correct, the start-up
jolt should be in the opposite direction
to the rotational direction arrow on the
motor housing. The wrong rotational
direction is also indicated if the pump
performs inadequately when installed,
or if loud noises can be heard during
operation. If the rotational direction
is wrong, 2 phases of the supply cable
must be swapped over.
The start-up jolt can be very
forceful.
Potential equalisation
To comply with EN 60079-14 and EN
1127-1, an additional equipotential
bonding must be installed for facilities
with protective earth conductors in TN/
TT networks in areas subject to explo-
sion hazards. In Germany, for example,
the design must be in accordance with
VDE 0100, Part 540 (Association of Ger-
man Electrical Engineers).
No additional potential equalisation
is required on site for JUNG PUMPEN
concrete or plastic chambers in explo-
sion zones 1 and 2 (statement made by
TÜV Nord (Technical Inspection Agency)
in March 2008).
10
Exception: if conductive parts, such as
cable protection sleeves made of cor-
rugated pipe or a pressure pipe made
of metal, are connected to the chamber
from the outside. In this case, an elec-
trically conductive connection must be
made between the conductive parts and
the housing of the pump(s). For corro-
sion protection reasons, the connection
should be made using stainless steel.
Explosion protected pumps have a spe-
cial connection point at the cable entry
point.

INSTALLATION

The pump must be installed as shown
in the examples. For installations in ac-
cordance with EN 12056-2, the pressure
pipe must be laid in a loop above the lo-
cal back pressure level and protected
with a back pressure valve.
Example installation
Assembly: Fix the coupling base firmly
to the floor of the collection chamber
using plugs and then mount the guide
rails. Next, install the pressure pipe
including the necessary fittings, such
as the non-return valve and shut-off
valves.
Finally, fit the pumps with the screwed-
on coupling catch on to the guide rails
and lower it into place using a chain
fixed to the shackle.
A fixing facility for lifting gear should be
provided above the chamber opening at
a sufficient height.
Level monitoring can be carried out
using various systems. Their specific
characteristics and requirements can
be found in the relevant operating man-
uals.
In accordance with the explo-
sion protection laws and regu-
lations, JUNG Ex-pumps should never
be allowed to run dry or to operate in
"snore" mode.
The pump must switch off when the wa-
ter level sinks to the upper edge of the
pump housing (x in the illustration), at
the very latest. This shut-down must be
implemented via a separate switching
circuit. Dry running for servicing or in-
spection purposes may only take place
outside the potentially explosive area.
A correspondingly larger diameter pipe
should be used for longer pressure
pipelines to avoid pipe friction losses.
Rising pressure pipes must be protect-
ed from frost! A chamber cover must be
selected that is suitable for the intended
use and has the required load-bearing
capacity.
If the pump is malfunctioning, part of
the contents of the oil reservoir could
escape into the pumping medium.
SERVICING
We recommend that you service the
equipment in accordance with EN
12056-4 and EN 60074-19.
To ensure continued reliability of ser-
vice, we recommend that you take out a
service contract.
Before carrying out any works:
disconnect the pump and the
controls from the mains and
take steps to ensure that it cannot be
emergized again.
Check the mains cable for signs
of mechanical and chemical
damage. Damaged or kinked
cables must be replaced.
When using a chain to lift the
pump, please observe the rele-
vant national regulations re-
garding accident prevention. Lifting
gear must be checked regularly by an
expert in accordance with the legal reg-
ulations.
Motors in the EX range con-
form to the "flameproof enclo-
sures" ignition protection cate-
gory. Maintenance works that affect the
explosion protection may only be car-
ried out by authorised specialists or by
the manufacturer. When carrying out
repairs, all areas next to flameproof
gaps must be checked for damages
and, if necessary, replaced genuine
parts.