SPCO NW User manual
NW, NC, NA
Sewage Pumps
Installation and operation instructions
1
Approvals
Michael Drechsel
President of IQNet
Roland Glauser
CEO SQS
CERTIFICATE
IQNet and SQS
hereby certify that the organisation
has implemented and maintains a
Management System
which ful lls the requirements of the following standard(s)
ISO 9001:2008
Scope No(s): 17, 18, 19
Issued on: 2015-03-03
Validity date: 2018-03-02
Registration Number: CH-32160
IQNet Partners*:
AENOR Spain AFNOR C ertication France AIB-Vinçotte Inter national Belgium ANCE-SIGE Mexico APCER Por tuga l CCC Cypr us
CISQ Ita ly CQC Ch ina CQM China CQS Czech Republic C ro Cert Croatia DQS Hold ing GmbH Germa ny
FCAV Braz il FONDONOR MA Venezuela ICON TEC Colombia IMNC Mexico Inspecta Cer tication Finland IR AM A rgentina
JQA Japan KFQ Korea MIRTEC Greece MSZ T Hunga ry Nemko AS Nor way NSA I Ireland PCBC Pola nd
Quality Austria Aust ria R R Russi a SII Israel SIQ Slovenia SIRIM QAS International Malaysia
SQS Sw itzerland SRAC Romania TEST St Petersburg Russia TSE Turkey YUQS Serbia
IQNet is represented in t he USA by: AFNOR Certicat ion, CISQ, DQS Holding GmbH and NSAI Inc.
* The list of IQNet partners is valid at t he time of issue of this certicate. Updated information is ava ilable under www.iqnet-cer tic ation.com
Swiss Pump Company AG
3645 Thun-Gwatt
Switzerland
Certi ed area
Whole company
Field of activity
Manufacture and sale of products for the transportation of liquids
3
General Data
Declaration of conformity page 4
Introduction 5
Specification 5
Installation 6
Operation 6
Maintenance 6
NW • Material construction 8
NC • Material construction 10
NA • Material construction 12
Disassembly and assembly 14
Trouble and trouble shooting 15
General Data
4
Declaration of conformity
EC –Declaration of Conformity
We declare that the following units
MODEL: NW / NC / NA
Comply with following provisions:
EN ISO 12100:2010 / Safety of machinery —General principles for design —Risk
assessment and risk reduction
EN 809:1998+A1:2009/AC:2010 / Pumps and pump units for liquids - Common
safety requirements
EN 12162:2001+A1:2009 / Liquid pumps - Safety requirements - Procedure for
hydrostatic testing
EN 60204-1:2006+A1:2009+AC: 2010 / Safety of machinery - Electrical equipment
of machines - Part 1 : General requirements. Industrial electrical device.
EN 61000-6-2 : 2005 / Electromagnetic compatibility (EMC) Part 6-2 : Generic
standards –Immunity for industrial environments
EN 61000-6-4:2007+A1:2011 / Electromagnetic compatibility (EMC) Part 6-4 :
Generic standards –Emission standard for industrial environments
5
Check the following points upon receipt of your pump:
• Is the pump exactly what you ordered? Check nameplate.
It is especially important that you check whether the pump is to be used with 50 or 60 Hz.
• Has any damage occurred during shipment? Are any bolts or nuts loose?
• Have all necessary accessories been supplied? (For a list of standard accessories see Construc-tion.)
Note: We recommend that you keep a spare pump on hand in case of emergencies.
Keep this instruc-tion manual in a place for future reference.
Introduction
Check the name plate for your pump head, discharge, speed, motor voltage and current.
Specifications
3
Instruction Manual
Submersible Sewage Pumps
NW/NC/NA
Introduction
Check the following points upon receipt of your pump:
> Is the pump exactly what you ordered? Check nameplate. It is especially important that you check
whether the pump is to be used with 50 or 60 Hz.
> Has any damage occurred during shipment? Are any bolts or nuts loose?
> Have all necessary accessories been supplied? (For a list of standard accessories see Construc-
tion.)
We recommend that you keep a spare pump on hand in case of emergencies. Keep this instruc-
tion manual in a place for future reference.
Specifications
Check the nameplate for your pump’s head (Hmax), discharge volume (Qmax), speed (R.P.M),
motor voltage and current.
Other specifications are noted in the chart below.
Item Specifications
Liquid
handled
Type Sewage, waste water, miscellaneous drain water
Temperature
Non-Automation 0.4~5.5 kw 0~40℃
(32~104F)
Automation 0.4~1.5 kw 0~40℃
(32~104F)
Materials
Casing Cast iron
Impeller Cast iron
Shaft SS410
Motor type Dry type submersible motor
Shaft seal lubrication oil Turbine No.32 ISO VG-32
Maximum water depth 10m (33ft)
INDEX
Introduction………..…..PAGE. 3
Specifications……...….PAGE. 3
Installation………..…....PAGE. 4
Electrical wiring………..PAGE. 4
Operation………..….….PAGE. 5
Maintenance……………..…....PAGE. 5
Construction…………………...PAGE. 6
Disassembly and Assembly….PAGE. 12
Nameplate format…………..…PAGE. 12
Troubleshooting…………….…PAGE. 13
General Data
6
Installation
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Electrical wiring
7
Operation
5
Operation
1. Before starting the pump
a. After completing installation, measure the insulation resistance again as described in Installation.
b. Check water level.
If the pump is operated continuously for an extended period of time in a dry condition or at the lowest water level,
the motor protector will be activated. Constant repetition of this action will shorten pump service life. Do not start
the pump again in such a situation until after the motor has completely cooled.
2. Test operation….
Non-automatic pump
Automatic pump
a. Turn the operating switch on and off a couple of times to check for normal pump start.
Floating switch must be raised for the pump to start.
b. Next, check direction of rotation. If discharge volume is low or unusual sounds are heard when the pump is operat-
ing, rotation has been reversed. When this happens, reverse two of the wires.
Maintenance
Check pressure, output, voltage, current and other specifications. Unusual readings may indicate. Refer
to Troubleshooting and correct as soon as possible.
1. Daily inspections
Check current and ammeter fluctuation daily. If ammeter fluctuation is great, even though within the limits of pump rat-
ing, foreign matter may be clogging the pump. If the quantity of liquid discharged falls suddenly, foreign matter may be
blocking the suction inlet.
2. Regular inspections
1. Monthly inspections
Measure the insulation resistance. The value should be more than 1M ohm. If resistance starts to fall rapidly
even with an initial indication of over 1M ohm, this nay be an indication of trouble and repair work is required.
2. Annual inspections
To prolong the service life of the mechanical seal by replacing the oil in the mechanical seal chamber once a
year. Water mixed the oil or cloudy textures are indications of a defective mechanical seal requiring replacement.
When replacing the oil, lay the pump on its side with filler plug on top. Inject suitable amount turbine oil No.32
(ISO VG-32)
.
3. Inspections at 3-5year intervals
Conduct an overhaul of the pump. These intervals will preclude the possibility of future trouble.
3. Parts that will need to be replaced
Replace the appropriate part when the following conditions are apparent.
Replaceable part Mechanical seal Oil filler plug gasket Lubricating oil O-ring
Replacement guide
Whenever oil in
mechanical seal
chamber is clouded
Whenever oil is replaced
or inspected Whenever clouded or dirty Whenever pump is
overhauled
Frequency Annually A half yearly A half yearly Annually
Note: above replacement schedule is based on normal operating conditions.
Motor output 0.4HP 0.5HP 1HP 2HP 3HP 5HP 7.5HP
Mechanical seal 12Ø 19.875(3/4”)Ø 25Ø
Oil seal 12Øx 24Øx7 t18Øx 35Øx7 t25Øx 47Øx8 t
Oil filler plug gasket (Inner diameter) x (outer diameter) x (thickness) =7.52Øx14.5Øx3.53t PE washer
Lubricating oil
(turbine oil #32) 120 cc 220cc 500 cc 600 cc
Maintenance
5
Operation
1. Before starting the pump
a. After completing installation, measure the insulation resistance again as described in Installation.
b. Check water level.
If the pump is operated continuously for an extended period of time in a dry condition or at the lowest water level,
the motor protector will be activated. Constant repetition of this action will shorten pump service life. Do not start
the pump again in such a situation until after the motor has completely cooled.
2. Test operation….
Non-automatic pump
Automatic pump
a. Turn the operating switch on and off a couple of times to check for normal pump start.
Floating switch must be raised for the pump to start.
b. Next, check direction of rotation. If discharge volume is low or unusual sounds are heard when the pump is operat-
ing, rotation has been reversed. When this happens, reverse two of the wires.
Maintenance
Check pressure, output, voltage, current and other specifications. Unusual readings may indicate. Refer
to Troubleshooting and correct as soon as possible.
1. Daily inspections
Check current and ammeter fluctuation daily. If ammeter fluctuation is great, even though within the limits of pump rat-
ing, foreign matter may be clogging the pump. If the quantity of liquid discharged falls suddenly, foreign matter may be
blocking the suction inlet.
2. Regular inspections
1. Monthly inspections
Measure the insulation resistance. The value should be more than 1M ohm. If resistance starts to fall rapidly
even with an initial indication of over 1M ohm, this nay be an indication of trouble and repair work is required.
2. Annual inspections
To prolong the service life of the mechanical seal by replacing the oil in the mechanical seal chamber once a
year. Water mixed the oil or cloudy textures are indications of a defective mechanical seal requiring replacement.
When replacing the oil, lay the pump on its side with filler plug on top. Inject suitable amount turbine oil No.32
(ISO VG-32)
.
3. Inspections at 3-5year intervals
Conduct an overhaul of the pump. These intervals will preclude the possibility of future trouble.
3. Parts that will need to be replaced
Replace the appropriate part when the following conditions are apparent.
Replaceable part Mechanical seal Oil filler plug gasket Lubricating oil O-ring
Replacement guide
Whenever oil in
mechanical seal
chamber is clouded
Whenever oil is replaced
or inspected Whenever clouded or dirty Whenever pump is
overhauled
Frequency Annually A half yearly A half yearly Annually
Note: above replacement schedule is based on normal operating conditions.
Motor output 0.4HP 0.5HP 1HP 2HP 3HP 5HP 7.5HP
Mechanical seal 12Ø 19.875(3/4”)Ø 25Ø
Oil seal 12Øx 24Øx7 t18Øx 35Øx7 t25Øx 47Øx8 t
Oil filler plug gasket (Inner diameter) x (outer diameter) x (thickness) =7.52Øx14.5Øx3.53t PE washer
Lubricating oil
(turbine oil #32) 120 cc 220cc 500 cc 600 cc
General Data
8
6
NW-Material Construction
NW-0.3~1 HP NW-2~7.5 HP
NW • Material construction
9
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NC-Material Construction
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NC • Material construction
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General Data
12
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NA-0.3~1 HP NA-2~7.5 HP
NA-Material Construction
NA • Material construction
13
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General Data
14
Disassembly and Assembly
12
Disassembly and Assembly
Nameplate format
1. Disassembly-
When disassembling pump, have a piece of cardboard or wooden board ready to
place the different parts on as you work. Do not pile parts on top of each other. They
should be laid out neatly in rows. The “O” ring and gasket cannot be used again
once they are removed. Have replacement parts ready. Disassemble in the following
order, referring to the sectional view.
Be sure to cut off power source before disassembly.
(1) Remove pump casing bolts, raise the motor section and remove pump casing.
(2) Remove shaft head bolt and impeller.
(3) Remove oil filler plug and drain lubricating oil.
(4) Remove intermediate casing bolts and oil chamber.
(Remember that any lubricating oil remaining in the mechanical seal chamber
will flow out.)
(5) Carefully remove mechanical seal, beware of not to scratch sliding surface of
motor shaft.
2. Assembly-
Re-assemble in reverse order of disassembly.
Be careful of the following points.
(a) During re-assembly, rotate the impeller by hand and check for smooth rotation.
If rotation is not smooth, perform steps-(3) through -(5) again.
(b)Upon completion of re-assembly step -(1) rotate the impeller by hand from the
suction inlet and check that it rotates smoothly without touching the suction
cover before operating the pump.
Please order “O” rings, packing, shaft seals and other parts from your dealer.
Nameplate
15
13
Troubleshooting
Trouble Cause Remedy
Does not start.
Starts, but imme-
diately stops.
(1) Power failure (1)~(3) Contact electric power company and
devise counter-measures
(2) Large discrepancy between power source and voltage
(3) Significant drop in voltage
(4) Motor phase malfunction (4) Inspect electric circuit
(5) Electric circuit connection faulty (5) Correct wiring
(6) Faulty connection of control circuit (6) Inspect connections and magnetic coil
(7) Fuses is blown (7) Check circuit then replace fuse
(8) Faulty magnetic switch (8) Replace with correct one
(9) Water is not at level indicated by Float (9) Raise water level
(10) Float is not in appropriate level (10) Adjust the position of float
(11) Float is not effective (11) Repair or replace
(12) Short circuit breaker is functioning (12) Repair location of short circuit
(13) Foreign matter clogging pump (13) Remove foreign matter
(14) Motor burned out (14) Repair or replace
(15) Motor bearing broken (15) Repair or replace
Operates, but
stops after a
while.
(1) Prolonged dry operation has activated motor protector
and caused pump to stop
(1) Raise water level to C.W.L
(2) High liquid temperature has activated motor protector
and caused pump to stop
(2) Lower liquid temperature
(3) Reverse rotation ! WARNING : (3) Correct rotation
Does not pump.
Inadequate vol-
ume.
(1) Reverse rotation (1) Correct rotation (see Operation)
(2) Significant drop in voltage (2) Contact electric power company
(3) Operating a 60Hz pump with 50Hz (3) Check nameplate
(4) Discharge head is high (4) Recalculate and adjust
(5) Large piping loss (5) Recalculate and adjust
(6) Low operating water level causes air suction (6) Raise water level or lower pump
(7) Leaking from discharge piping (7) Inspect, repair
(8) Clogging of discharge piping (8) Remove foreign matter
(9) Foreign matter in suction inlet (9) Remove foreign matter
(10) Foreign matter clogging pump (10) Remove foreign matter
(11) Worn impeller (11) Replace impeller
Over current (1) Unbalanced current and voltage (1) Contact electric power company
(2) Significant voltage drop (2) Contact electric power company and
devise counter-measure
(3) Motor phase malfunction (3) Inspect connections and magnetic
switch
(4) Operating 50Hz pump on 60Hz (4) Check nameplate
(5) Reverse rotation ! WARNING : (5) Correct rotation (see Operation2)
(6) Low head. Excessive volume of water (6) Replace pump with high head pump
(7) Foreign matter clogging pump (7) Remove foreign matter
(8) Motor bearing is worn out or damaged (8) Replace bearing
Pump vibrates;
excessive oper-
ating noise.
(1) Reverse rotation (1) Correct rotation
(2) Pump clogged with foreign matter
(2) Disassemble and remove foreign mat-
ter
(3) Piping resonates (3) Improve piping
(4) Strainer is closed too far (4) Open strainer
Trouble and trouble shooting
Swiss Pump Company AG
Moosweg 36
CH - 3645 Thun - Gwatt
Switzerland
Tel. +41 33 223 11 00
Fax +41 33 223 11 22
mail@swisspump.com
www.swisspump.com
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2
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