GORMAN-RUPP PUMPS JW Series User manual

OM−05813−01
September 20, 2005
F
THE GORMAN-RUPP COMPANY DMANSFIELD, OHIO
GORMAN-RUPP OF CANADA LIMITED DST. THOMAS, ONTARIO, CANADA Printed in U.S.A.
www.gormanrupp.com
ECopyright by the Gorman-Rupp Company
INSTALLATION, OPERATION,
AND MAINTENANCE MANUAL
SUBMERSIBLE PUMPS
JW SERIES

OM−05813JW SERIES
PAGE 1 − 1INTRODUCTION
SECTION 1 − INTRODUCTION
Gorman-Rupp JW Series submersible and dry well
pumps are suitable for use in either dry or wet well si-
tuations, provided that the appropriate method of
motor cooling is selected. The motors are supplied
by EMOD Motoren GmbH, and a copy of their Oper-
ating Instructions is included with this manual.
Read this manual in conjunction with the
included copy of the Emod Motor
instructions.
The motors are fully submersible, rated IP68 for
depths up to 30m and, if fully submerged, may be
cooled by direct contact with the pumped liquid. If
only partially submerged, or in a dry well, they must
be fitted with a cooling water jacket which is internally
connected to the pumped liquid.
Liquid temperature must not exceed 40_C
to ensure adequate cooling of the motor.
The motors are normally air-filled, but for situations
where a water jacket is not suitable (e.g. handling
sludge or fatty liquids), oil-filled versions are avail-
able. The greater heat conductivity of the oil means
that such motors can be used without a water jacket,
even in partially submerged situations.
Oil-filled motors are not suitable for dry-well applica-
tions.
The different types of motors and their methods of
cooling are indicated by the type number on the mo-
tor nameplate:
TMU indicates a motor suitable for safe areas only.
EEx d DPM indicates a motor suitable for Zone 1 or
Zone 2 hazardous areas (see below).
The suffix WK indicates a water jacket.
The suffix O indicates an oil-filled motor.
To avoid leakage of the pumped liquid into the motor,
the shaft is provided with two mechanical seals with a
seal oil chamber between them. There is a moisture-
detection probe in the seal oil chamber which, in con-
junction with the appropriate control equipment, will
indicate if water has leaked past the outer mechani-
cal seal and into the chamber. This gives advance
warning of the need to change a seal before water
has penetrated the motor.
Note that the oil used inside the seal chamber is dif-
ferent from that in the motor (if used) but, as there is
no drain plug on the motor housing, there is no dan-
ger of mixing the two oils or of inadvertently draining
the oil from the motor.
Many wet-well applications are classed as hazard-
ous areas as defined by BS EN 50014. For such ap-
plications, it is mandatory to use equipment which
complies with the requirements of the ATEX Directive
94/9/EG. Pumps and motors suitable for use in haz-
ardous areas Zones 1 and 2 are marked as such on
the nameplates, as shown in Figure 2 in this section.
The ATEX marking on the pump nameplate is II 2 G
T3, which indicates that it is Category 2 of Equipment
Group II, suitable for gaseous atmospheres, and
having a maximum surface temperature of class T3
(200°C). Such marking shows that the equipment is
suitable for Zone 1 and Zone 2.
It is not necessary to have Group II Category 2 equip-
ment independently certified, but it is required that
the Construction File justifying such categorisation is
deposited with a Notified Body". The Construction
File for Gorman-Rupp submersible pumps is depos-
ited with BASEEFA (2001) Ltd, Rockhead Business
Park, Staden Lane, Buxton, Derbyshire, SK17 9RZ,
UK.
A risk assessment has been carried out in
order to comply with the ATEX directive.
This indicates that, if the pump is allowed
to run dry, there is a risk of accumulation
of flammable gases. There is also a risk of
ignition due to contact of moving parts or
to an electrical spark from the moisture

OM−05813 JW SERIES
PAGE 1 − 2 INTRODUCTION
probe. To avoid these risks, the pumps
must not be allowed to run dry.
The risk assessment also indicates that
there is a possibility of excessive surface
temperature if the pump is allowed to run
against a closed valve for an extended
period. The pump must not be allowed to
run for more than 5 minutes in this
condition.
The ATEX marking on the motor is EEx d IIB T4, which
indicates that safety is achieved by having a motor
housing capable of containing any explosion which
could occur inside it. It is suitable for Group IIB gases,
and has a maximum surface temperature of class T4
(135°C). All Gorman-Rupp EExd motors are inde-
pendently certified by PTB (Physikalisch−Tech-
nische Bundesanstalt, Bundesallee 100, D−38116
Braunschweig, Germany).
If pump and motor nameplates do not
carry the Ex symbol and ATEX marking,
they are suitable only for safe areas.
Typical motor and pump nameplates are shown in
Figures 1−1 and 1−2. An explanation of the pump
type number is given in Table 1−1.
When ordering spare parts, it is essential to
state the pump or motor serial number. The
type number is not sufficient.
PUMP MODEL DESIGNATION
Following is a description of the model numbering
system for Gorman-Rupp JW Series pumps. JW Se-
ries pump model numbers include series, style, im-
peller type, pump type, port size and motor speed.
Table 1−1. − Typical Pump Model
W07−2P
Family
Name
Impeller
Type
Pump
Type
Port
Size
Motor
Speed
4VJ
Family Name: =JW Series
Impeller Type: V=Vortex Flow, K=Channel 1 Vane 2
Shroud, J=Channel 2 Vane 2 Shroud, L=Channel 3
Vane 2 Shroud, R=Channel 5 Vane 2 Shroud,
U=Channel 3 Vane 1 Shroud, G=Channel 5 Vane 1
Shroud, S=Open S" Blade
Pump Type: 2=Submersible, 3=3000 Submersible,
4 = Submersible New Generation
Port Size (Suction/Delivery): 6=65mm x 60mm,
7=80mm x 80mm, 8=80mm x 80mm, 9=80mm x
100mm, 10=100mm x 100mm, 12=100mm x
100mm, 20=80mm x 80mm, 21=100mm x 80mm,
22=100mm x 100mm, 23=150mm x 100mm,
24=150mm x 125mm, 25=150mm x 150mm,
26=200mm x 150mm, 28=250mm x 200mm,
30=300mm x 250mm, 31=300mm x 300mm
Motor Speed: 2P=3000 RPM, 4P=1500 RPM, 6P=
1000 RPM, 8=750 RPM

OM−05813JW SERIES
PAGE 1 − 3INTRODUCTION
TMU − suitable for safe area only
Eex d − suitable for Zone 1 or 2
Suffix Wk − Water jacket
Suffix O − Oil filled
Motor Full load current
∆ Symbol = suitable
for star/delta starting
ΥSymbol = star
connected, only suitable
for DOL starting
PTB Nr and Eex d indicate
suitability for hazardous
areas. If these marks are
not present, motor is only
suitable for a safe area
Kaltleiter" = thermistor
Offner"+temperature = thermostat
Motor input power
Motor output power
Figure 1−1. Motor Nameplate
Pump complies with EU
Directive 94/9/EC
Equipment Group II
(non-mining)
Equipment
category 2
Type of
atmosphere (Gas)
Temperature class
Pump Model number
Pump Serial number Impeller diameter
Date of manufacture
Figure 1−2. Pump Nameplate

OM−05813JW SERIES
PAGE 2 − 1PRODUCT DESCRIPTION
SECTION 2 − PRODUCT DESCRIPTION
PUMP SELECTION
Because of the extremely wide range of capacities
and heads involved in sewage pumping, plus the
different liquids and viscosities encountered,
Gorman-Rupp Sales Assistants are fully qualified to
assist on pump selection to suit your specific
application. Solids handling submersible pumps are
particularly useful for municipal sewage pumping
stations, sewage treatment works, site drainage,
land drainage, road drainage, river intakes, sump
and tank emptying and flood protection schemes.
Their versatility, compactness and simple installation
alow them to be applied to many other applications.
SEWAGE PUMP IMPELLERS
The Gorman-Rupp range of submersible and dry well
pumps are designed to pump polluted water with
solids in suspension, but they can also be used for
clean, non-aggressive liquids. The most common
types used across the field of sewage pumping are
the centrifugal radial flow and vortex impeller pumps.
Both pump types are designed to handle suspended
solids and stringy material, with freedom from
choking.
VORTEX IMPELLER
Raw domestic sewage.
Sewage sludge: Humus, primary, surplus activated,
return activated.
Storm water and surface water.
Waste water containing large quantities of solids in
suspension.
Grit pumping.
Abattoir waste.
Textile waste.
Non-aggressive effluents.
CHANNEL IMPELLERS
Raw domestic sewage.
Sewage sludge: Humus, surplus activated, return
activated.
Storm water and surface water.
Waste water containing silt and small solids in
suspension.
Raw water.
Water works sludge.
Non-aggressive effluents.

OM−05813 JW SERIES
PAGE 2 − 2 PRODUCT DESCRIPTION
SCREW IMPELLERS
Gorman-Rupp screw impellers are specifically
designed for handling primary sludge and
secondary sludges with up to 10% solids content,
offering improved efficiency in addition to solids
handling, thereby reducing running costs.
CENTRIFUGAL RADIAL FLOW OPEN IM-
PELLERS
Raw domestic sewage.
Sewage sludge: Humus, primary, surplus activated,
return activated.
Storm water and surface water.
Waste water containing large quantities of solids in
suspension.
Grit pumping.
Abattoir waste.
Textile waste.
Non-aggressive effluents.

OM−05813JW SERIES
PAGE 3 − 1HEALTH AND SAFETY
SECTION 3 − HEALTH AND SAFETY
INTRODUCTION
The instructions and information given in this manual
are as explicit as is reasonably practicable. However,
competence and expertise are necessary in the
maintenance of Gorman-Rupp submersible pumps
and their ancillary equipment.
To ensure reliable and trouble-free operation, work
should be carried out only by experienced and
authorised personnel.
The United Kingdom Health and Safety at Work Act,
1974 states in part that:
a. It shall be the duty of every employee, while at
work:
i. To take reasonable care for the Health and
Safety of himself and of others who may be
affected by his acts or omissions at work,
and:
ii. As regards any duty or requirement imposed
on his employer or any other person by or
under any of the relevant statutory
provisions, to co-operate with him so far as is
necessary to enable that duty or requirement
to be performed or complied with.
b. No person shall intentionally or recklessly
interfere with or misuse anything provided in the
interest of health, safety or welfare in pursuance
of any of the relevant statutory provisions.
Recognizing that Health and Safety requirements
vary between countries, operation and maintenance
of the pumps and other equipment described in this
manual must be carried out in compliance with all
current Safety, Health and Welfare legislation
requirements within the country where the pump is
installed.
OPERATION
SPay due regard to Local Authority bye-laws,
local Water Authority Regulations, Site
Regulations and/or other directives
regarding Health and Safety at Work.
SPlant/Equipment must not be used for work
for which it was not designed or intended.
SSuitable personal protective equipment must
be worn as appropriate.
SAny defects in, or damage to, plant or
equipment must be reported immediately to
supervisory management.
SAll accidents must be reported immediately
to supervisory management, and effective
action taken.
SCaution must be exercised when working in
close proximity to, or handling motor units,
as surface temperatures could reach 100_C.
Noise levels may reach 80dBA on dry well
installations and 70dBA on wet well
installations.
MAINTENANCE
Before performing any maintenance
work:
1. Isolate the equipment at the main
control panel.
2. Lock the isolator switch lever at
OFF".
3. Prove electrical isolation of the
equipment.
4. Display a warning notice.
SAll sources of danger must be locked off or
physically disconnected (e.g. valves locked
closed, and temporary barriers erected
and/or warning notices posted as
appropriate).
SGuards or covers must not be removed until
electrical isolation has been completed and
proven.
SIf a pump or item of ancillary equipment is
removed for maintenance, overhaul or repair,
it should be steam-cleaned as necessary, to
kill any bacteria which may be present.
SSpecial safety precautions will be necessary
where maintenance work involves entry into
confined spaces.

OM−05813 JW SERIES
PAGE 3 − 2 HEALTH AND SAFETY
SAll maintenance work must be performed in
compliance with all electrical maintenance
requirements within the country where the
pump is installed (within the UK, the
Electricity at Work Regulations 1989).
SWhen renewing an electrical protection
component, the new part must be of the
same rating/tolerance as the discarded item.
SCompressed air must not be used to clean
electric control panel compartments,
terminal boxes, etc.
SOn completion of a maintenance procedure,
all earth connections shall be checked for
good contact and cleanliness, and all safety
devices tested to ensure that the equipment
has been re-fitted correctly.
SOn completion of maintenance, all guards
must be re-fitted properly before isolators
are unlocked and the plant/equipment is
re-started.
WORKING IN HAZARDOUS AREAS
SAppropriate safety equipment (i.e. gas
detectors, breathing apparatus, etc)., must
be used.
SAll safety equipment must be to the relevant
local standards and be in good, serviceable
condition.
SSuitably qualified persons must be present
in the numbers required by local bye-laws
and by site regulations.
CONCLUSION
Within the UK, the Health and Safety at Work Act
1974 requires that employers provide such
information, instruction, training and supervision as
is necessary to ensure, as reasonably practicable,
the Health Safety and Welfare of employees.
Also within the UK, Legislation involving the Control
of Substances Hazardous to Health Regulations
2002, and the Noise at Work Regulations 1989, may
also be relevant.
Regardless of the country where the pump is
installed, observance of current Health and Safety
regulations will benefit both employees and
employers alike to ensure the safe, efficient and
reliable operation of the equipment.

OM−05813JW SERIES
PAGE 4 − 1HANDLING AND STORAGE
SECTION 4 − HANDLING AND STORAGE
HANDLING
On unpacking the pump, check carefully for any
transit damage or other obvious defect. Report
immediately any complaint both to Gorman-Rupp
and the carrier. When doing this, quote the pump
type and serial number.
Do not suspend the pump by its power sup-
ply cable.
Take care when lifting or handling a Gorman-Rupp
submersible pump to avoid causing any damage.
Use correctly rated lifting equipment for all lifting
operations.
Always lift the pump by the lifting handle, eye or ring
provided for this purpose. When lifting the pump in
the horizontal position for maintenance purposes,
use a second set of lifting equipment with a soft sling
around the motor body.
Combined weight of pump and motor is
stamped on pump name plate.
STORAGE
Storage should be in a dry, clean, vibration-free
environment, protected from extremes of
temperature and free of corrosive or chemically
damaging fumes. Protective packing should not be
removed before it is necessary for installation.
Storage under vibration-free conditions is essential,
as vibration can cause damage to bearings. As a
precaution, the impeller should be rotated manually
a few turns at weekly intervals in order to prevent
‘brinelling’ of the bearings.
If the storage period exceeds four (4) years, seal oil
and bearing grease should be renewed before
commissioning the pump.
NOTE
Regreasing bearings involves a major stripdown of
the motor; therefore, consult The Gorman-Rupp
factory for instructions.
Pumps should also be inspected regularly for
damage or corrosion and the electric motor
insulation should be checked as described later in
this manual.

OM−05813JW SERIES
PAGE 5 − 1INSTALLATION AND COMMISSIONING
SECTION 5 − INSTALLATION AND COMMISSIONING
INSTALLATION
1. Before installing the pump, perform the follow-
ing checks:
SInspect the pump for damage and the
power supply cable for cuts or abrasions.
SCheck that the power supply cable(s) and
any auxiliary signal cable are clamped
securely with the entry glands tightened
sufficiently to form a watertight seal. The
glands must grip the cable firmly but not
so tightly as to damage the cable sheath.
SRemove one of the seal housing plugs and
check that the seal housing is filled with oil
to the correct level (see FIRST SERVICE,
Section 7).
STurn the impeller by hand to check that it
rotates freely.
SCheck that the site power supply details
correspond with those on the pump rating
plate. A tolerance of + 10% is permissible
on voltage for safe area motors and + 5%
on voltage for Eex d motors. A tolerance of
+ 2% on frequency is also permissible.
The control panel/starter must include an
overload relay with single phasing
prevention.
2. Connect the pump to its control panel in a
manner appropriate to the hazardous zone
classification. Ensure that the moisture
detection probe and motor protection
thermostats or thermistors are connected
correctly. See Section 6 for wiring diagrams.
NOTE
In addition to overload relays, motors must also have
direct temperature protection to limit the winding
temperature. This is provided by thermistors or
thermostats embedded in the motor windings.
Thermostats open when reaching the limiting
temperature and close when the temperature
decreases.
Thermistor cables are tagged 1 and 2 as shown
on wiring diagram no SE 2392.
Motors operating with frequency converters
(whether or not for hazardous areas) must be
protected by thermistors and not thermostats.
The variable frequency must be kept within the
range 25 to 55 Hz.
As explained in INTRODUCTION, Section 1 of
this manual, all motors are fitted with moisture
detection probes in the seal oil chamber. Details
of the connections for these are shown in
Section 6 of this manual.
3. Check that motor overload relays are set to trip
at 100% of full load current for DOL starting or at
58% of full load current for STAR DELTA starting.
Starter fuse ratings must not exceed three times
the motor current specified on the pump rating
plate.
Ensure all personnel are clear of the
pump. Do not allow the pump to run dry for
more than the few seconds needed to
carry out a visual check. Otherwise the
mechanical seal may be damaged
4. Position the pump securely, then start the pump
briefly in order to check the direction of rotation.
Correct rotation is indicated by a decal on the
pump, and should be anti-clockwise when
viewed from the pump suction; therefore, the
direction of kickback of the pump when started
should be clockwise when viewed from the
pump suction. If the direction of rotation is
incorrect, stop and isolate the pump, then
reverse appropriate electrical connections.
Restart the pump to check that rotation is now
correct.
Do not suspend the pump by its power
supply cable.

OM−05813 JW SERIES
PAGE 5 − 2 INSTALLATION AND COMMISSIONING
5. Isolate the pump from its electrical power
supply, then attach suitable lifting equipment to
the lifting handle (or eye) and lift the pump into
position in the well.
6. In the case of a dry well installation the pump
should be connected to its suction, delivery and
air release pipework and secured to its
foundation.
7. In the case of a wet well installation with guide
rail and low level coupling, the pump should be
installed in accordance with the LIFTING
instructions in this section.
LIFTING
Where a Gorman-Rupp submersible pump is im-
mersed in a wet well − either mounted on a vertical
guiderail and equipped with a low level quick release
delivery port coupling or as a portable unit − it can be
retrieved for inspection and for performing mainte-
nance work on the surface, then returned to service
without anyone having to enter the well.
Access to the well is via a lockable lift-out cover di-
rectly above each pump.
The user/operator is responsible for
maintaining lifting equipment in a safe
condition and for periodic testing and re-
certification in accordance with the re-
quirements of local Health and Safety leg-
islation and bye-laws.
Lifting Chain
One end of a lifting chain is shackled to the handle,
ring or eye at the top of the pump’s motor housing.
Both the chain and its shackle have been sized care-
fully to give an adequate safe working margin when
they are used for lifting the pump.
When the lifting chain is not in use, its remote end is
either clipped to the top of the pump’s guiderail or
hooked in an equally accessible position immediate-
ly beneath the well’s access cover.
Portable Crane
A portable crane is located in, and designed to pivot
‘full circle’ about, a socket cast into the concrete pad
adjacent to the pump’s access cover.
The crane may be equipped with a hand-operated
winch mounted on the crane arm. The winch winds a
stainless steel wire rope over a pulley to raise or lower
a carbine hook, which is attached by a swaged loop
at the suspended end of the rope.
Alternatively (according to user preference), on
cranes rated for safe working loads of 500kg and
above, the winch may be omitted and provision
made for suspending a chain block from the crane
arm.
Recovering a Pump from its Well
1. Position the crane in its socket.
2. Check that the holding chain is anchored se-
curely to the crane arm and that its carbine hook
is in good working order.
Allow the holding chain to hang freely.
3. Prepare a surface area, immediately to one side
of the crane, where the pump can be placed for
inspection.
4. Isolate the pump from the electrical supply. Lock
the isolator switch lever at ‘OFF’.
5. Close the delivery sluice valve.
6. Unlock and remove the wet well access cover.
Place it to one side, where it will not impede the
lifting operation.
7. Erect safety barriers and place warning notices
around the open well.
8. Lower the lifting carbine hook and engage it se-
curely with the steel ring at the remote (upper)
end of the pump’s lifting chain.
9. Check that the carbine hook’s safety catch has
operated correctly.
10.Operate the lifting mechanism (winch or chain
block) to raise its hook, and so lift the pump, until
the carbine hook at the flying end of the holding
chain can be engaged with the next steel ring
down the length of the lifting chain.
11.Check that the holding carbine hook’s safety
catch has operated correctly.
12.With the weight of the pump supported by the
holding chain, disengage the lifting carbine
hook and transfer it to a steel ring which is lower
down in the lifting chain.
13.Check that the lifting carbine hook’s safety
catch has operated correctly.
14.Operate the lifting mechanism to again raise the
hook and further elevate the pump.
15.Continue lifting until the carbine hook at the fly-
ing end of the holding chain can be transferred

OM−05813JW SERIES
PAGE 5 − 3INSTALLATION AND COMMISSIONING
to the steel ring beneath that engaged by the lift-
ing hook.
16.Repeat the steps of this progressive ‘lift, hold
and lift again’ procedure until the pump is raised
clear of the well and is above ground level.
In the case of a portable pump:
1. Disengage the pump’s high level hose/pipe-
work coupling.
2. Steady the pump while pivoting the crane to one
side.
3. Unhook the holding chain from the lifting chain.
Allow the holding chain to hang freely.
4. Lower the pump onto the prepared surface.
5. Disengage the winch hook from the pump’s lift-
ing chain.
Returning a Pump to its Well
Generally, the procedure for returning a pump to its
well is the reverse of that for lifting it out.
Initially, the crane winch’s lifting carbine hook must
be engaged with a ring in the lifting chain which will
allow for raising the pump from the ground and pivot-
ing the crane to bring the pump above its well.
In the case of a portable pump, the pump’s delivery
hose should be coupled with the static delivery line
positioned above the pump as it is lowered into the
well.
Correct alignment and careful engagement are im-
portant to minimize damage when re-mounting a
pump on a vertical guide rail.
Lower the pump progressively, using the holding
chain, to take the pump’s weight while the lifting car-
bine hook is transferred from one of the lifting chain’s
rings to another.
When the pump is located correctly in its well and the
crane’s lifting hook has been disengaged, the top
ring of the lifting chain must either be clipped to the
top of the guide rail or be engaged with the hook pro-
vided for that purpose.
When returning the pump to service, follow the COM-
MISSIONING procedure outlined below.
Always close the wet well by re-fitting and locking its
access cover before removing barriers and/or warn-
ing signs.
COMMISSIONING
1. In the case of a dry well installation, the suction
isolating valve should be opened, fully. The air
release valve should then be opened to allow
any trapped air to escape. The air release valve
should then be closed.
2. Restore the electrical power supply and start the
pump.
Do not allow the running current to exceed
the rating plate full load current.
3. Open the delivery isolating valve slowly;
allowing the pumping main to fill gradually
4. Check that the pump is operating with minimal
vibration and there are no leaks.

OM−05813JW SERIES
PAGE 6 − 1ELECTRICAL CONNECTION
SECTION 6 − ELECTRICAL CONNECTIONS
Gorman-Rupp JW Series motors are supplied in a
number of different electrical configurations.
Normally a wiring diagram will be attached to the end
of the cable, but, if this is not the case, the following
will assist in identifying the appropriate connection
arrangement.
If it is intended to use an Icore or similar
submersible cable connector to connect the
motor cable, it is important to check the
wiring diagram for the number of cable cores
before ordering the connector.
All motors have connections both for power supply
and for instrumentation (moisture probe and
thermostats or thermistors). For the smaller motors,
up to about 11 kW, these are all contained in one
cable. For larger motors, of about 15 kW and above,
there are two separate power cables and an
instrumentation cable.
Cable sizes are given in the attached table.
Where all the connections are in a single cable, the
cores are coloured black, and are identified by tag
numbers as shown in the wiring diagrams.
Where there are separate power cables, the power
connections are colour coded and tagged as follows:
U1/U2 Black
V1/V2 Brown
W1/W2 Gray
The separate instrumentation connections may be of
any colour, but are always identified by tag numbers
as shown in the wiring diagrams.
In general, external connections are made to both
ends of each motor winding, so that 6 power
connections are brought out to suit star/delta
starting.
Very small motors (4 kW and below) are normally
designed for permanent star connection, and may
only be started DOL. However, all 6 power
connections may still be brought out, in which case
the star connection must be made at the starter.
The features of any individual motor are indicated on
the EMOD motor nameplate as shown in Section 2 of
this manual. Points to note are:
Method of connection: Indicated by a ∆or Y
symbol after the voltage. Sometimes the word
Stern" (= star) is used in place of the Y symbol.
Thermistors: Indicated by the abbreviation Kalt."
(Kaltleiter = thermistor).
Thermostats: Indicated by the word Õffner" (=
thermostat) followed by the temperature setting.
Where thermostats are used, note thatmotors for
hazardous areas usually have two sets and those for
safe areas, one. However, it sometimes happens that
motors originally designed for hazardous areas are
used in safe areas instead. In such cases it is only
necessary to connect the limiting thermostats
(tagged BO and P).
Having established the features of the motor, the
appropriate wiring diagram can be found from the
diagram below.

OM−05813 JW SERIES
PAGE 6 − 2 ELECTRICAL CONNECTION
Thermostats
Single Dual
Star
SE 2395
Delta
SE 2393
Star
SE 2394
Delta
SE 2391
Thermistors
Star
SE 2396
Delta
SE 2392
Figure 6−1. Wiring Diagram Identification
As explained in INTRODUCTION, Section 1 of this
manual, all motors are fitted with moisture detection
probes in the seal oil chamber. The moisture probe
should be connected to a suitable relay as shown in
Figures 6−8 and 6−9 at the end of this Section. For
hazardous area applications, we recommend that
the moisture detection probe is connected via a
galvanically isolated barrier relay (available from
Pepperl+Fuchs, or contact a local distributor within
the country where the pump will be installed).
For a galvanically isolated relay to offer
protection, the moisture probe
connection must be run in a separate
sheath from the power cable, otherwise
there is a possibility that a voltage may be
induced in the moisture probe
connection. If the seal oil chamber
contains flammable gas, there is a remote
possibility that this could cause a spark
and an explosion.
For motors of about 15 kW and above, the
power and moisture probe cables are in
separate cables, but in smaller motors all
the cables are contained in one sheath. In
such circumstances, it is not necessary to
use a galvanically isolated relay, but the
operator must recognize that there is a
potential risk if the seal oil chamber
becomes empty of liquid.

OM−05813JW SERIES
PAGE 6 − 3ELECTRICAL CONNECTION
Table 6−1. Cable Sizes
Frame Size Rated Output Cable Size Cable Size Cable Diameter
with thermistor with thermostat max.
kW and leakage control and leakage control mm
112 S/2-110 4.0 10G1,5 12G2,5 20/24
112 S/2-140 5.5 10G1,5 12G2,5 20/24
160 L/2-180 15 2x4G6 + 1x5G1,5 19 + 13,5
160 L/2-215 18.5 2x4G6 + 1x5G1,5 19 + 13,5
160 L/2-250 22 2x4G6 + 1x5G1,5 19 + 13,5
200/2-200 30 2x4G10 + 1x5G1,5 24,5 + 13,5
90/4-75 1.5 10G1,5 20
90/4-100 2.2 10G1,5 20
112 S/4-130 4.0 10G1,5 12G2,5 20/24
112 S/4-165 5.5 10G1,5 12G2,5 20/24
112 M/4-240 7.5 10G1,5 12G2,5 20/24
160 M/4-160 9.0 12G2,5 24
160 M/4-160 11 12G2,5 24
160 L/4-215 15 2x4G6 + 1x5G1,5 19 + 13,5
160 L/4-250 18.5 2x4G6 + 1x5G1,5 19 + 13,5
160 L/4-290 22 2x4G6 + 1x5G1,5 19 + 13,5
200/4-220 22 2x4G10 + 1x5G1,5 24,5 + 13,5
200/4-220 30 2x4G10 + 1x5G1,5 24,5 + 13,5
200/4-250 37 2x4G16 + 1x5G1,5 29,5 + 13,5
225/4-290 45 2x4G16 + 1x5G1,5 29,5 + 13,5
250/4-290 55 2x4G35 + 1x5G1,5 38 + 13,5
280/4-300 75 2x4G50 + 1x5G1,5 43,5 + 13,5
280/4-360 90 2x4G50 + 1x5G1,5 43,5 + 13,5
280/4-400 110 2x4G70 + 1x5G1,5 48 + 13,5
90/6-100 1.1 10G1,5 20
112 S/6-140 2.2 10G1,5 12G2,5 20/24
112 S/6-140 3.0 10G1,5 12G2,5 20/24
112 M/6-210 4.0 10G1,5 12G2,5 20/24
160 M/6-125 5.5 12G2,5 24
160 M/6-125 7.5 12G2,5 24
160 M/6-165 11 12G2,5 24
160 L/6-225 15 2x4G6 + 1x5G1,5 19 + 13,5
200/6-230 18.5 2x4G6 + 1x5G1,5 19 + 13,5
200/6-230 22 2x4G10 + 1x5G1,5 24,5 + 13,5
200/6-265 30 2x4G10 + 1x5G1,5 24,5 + 13,5
225/6-290 37 2x4G16 + 1x5G1,5 29,5 + 13,5
250/6-290 45 2x4G16 + 1x5G1,5 29,5 + 13,5
280/6-300 55 2x4G35 + 1x5G1,5 38 + 13,5
160 M/8-125 5.5 12G2,5 24
160 L/8-225 11 12G2,5 24
200/8-230 15 2x4G6 + 1x5G1,5 19 + 13,5
225/8-310 22 2x4G10 + 1x5G1,5 24,5 + 13,5

OM−05813 JW SERIES
PAGE 6 − 4 ELECTRICAL CONNECTION
Figure 6−2. Wiring Diagram SE−2391

OM−05813JW SERIES
PAGE 6 − 5ELECTRICAL CONNECTION
Figure 6−3. Wiring Diagram SE−2392

OM−05813 JW SERIES
PAGE 6 − 6 ELECTRICAL CONNECTION
Figure 6−3. Wiring Diagram SE−2393

OM−05813JW SERIES
PAGE 6 − 7ELECTRICAL CONNECTION
Figure 6−4. Wiring Diagram SE−2394

OM−05813 JW SERIES
PAGE 6 − 8 ELECTRICAL CONNECTION
Figure 6−5. Wiring Diagram SE−2395