DAYLIFF DWW Series Installation instructions

DWW/DWV/DWC
DRAINAGE PUMPS
Installation &
Operating Manual
DWW 30M/50M/75M
DWW 05A DWW 10A/20A
DWV 30M/50M/75M DWV 05A/10 DWC

PUMP SPECIFICATIONS
1.
1
2.
INSTALLATION 3
ELECTRICAL CONNECTIONS
3.
4
MAINTENANCE
4.
4
TROUBLE SHOOTING
5.
5
INDEX
© Davis & Shirtliff Ltd 2020
Contents herein are not warranted
WARRANTY
6.
7

1
1. PUMP SPECIFICATIONS
DWW 30M/50M/75M
DWW 05A DWW 10A/20A
3
FLOW RATE (m /hr)
HEAD (m)
DWW
10
0
5
10
15
20
25
30
35
20 30 5040 60
DWW 75M
DWW 50M
DWW 30M
DWW 20A
DWW 10A
DWW 05A
3
FLOW RATE (m/hr)
HEAD (m)
DWV
10
0
10
15
20
25
30
20 30 6050
40 70
5
80
DWV 75M
DWV 50M
DWV 30M
DWC 20A
DWC 10A
DWV 10A
DWV 05A
3
FLOW (m/hr)
HEAD (m)
6
0
5
10
15
20
12 18 3024 36 42
DWC
Congratulations on selecting a Dayliff DW Pump. They are
manufactured to the highest standards and if installed and operated
correctly will give many years of efcient and trouble free service.
Careful reading of this Installation Manual is therefore important,
though should there be any queries they should be referred to the
equipment supplier.

DWW
The Dayliff DWW range of open impeller portable submersible pumps are designed
for pumping waste water containing particles and impurities in industrial and
domestic applications. They feature cast iron impellers and pump bodies, double
mechanical seals, NBR oil seals and stainless steel strainers and are supplied with
10m of cable. Single phase pumps up to 1.5kW are supplied with level switches for
automatic operation while 3 phase pumps require external switching control.
DWV
The Dayliff DWV range of submersible pumps are designed to handle industrial and
domestic waste water and sewage and are especially suitable for pumping water
containing a high proportion of solid particles including threads and fibres. The
pumps are of heavy duty construction featuring cast iron vortex impeller which
minimises clogging, cast iron pump casing, double mechanical seal and NBR oil seal.
They are designed for fixed installation with discharge connection suitable for guide
rail mounting. All pumps are supplied with 10m of H07RNF cable.
DWC
The Dayliff DWC range of heavy duty submersible pumps are designed to handle
industrial and domestic waste water and sewage with a specially designed cutter
impeller. They are suitable for pumping water containing a high proportion of solid
particles including threads and fibres. Pump construction is cast iron semi-open
impeller with Tungsten Carbide cutting edge, cast iron casing, double mechanical
seal and NBR oil seal. The pumps are designed for free standing installation and are
supplied complete with 10m of H07RNF cable and level switches for automatic
operation.
OPERATING CONDITIONS
Pumped liquids: Thin, chemically non-aggressive liquids, containing some
impurities and fibres
0
Max. Liquid temperature: +40 C
Max. Operating Depth: 10m
Min Immersion Depth: DWW -132mm
DWV - 160mm
DWC - 310mm
2

DWV 30M
DWV 10A
DWW 05A
DWW 10A
DWW 20A
DWW 30M
DWW 50M
DWW 75M
DWV 05A
DWV 50M
DWV 75M
DWC 20A
DWC 10A
Max.
Particle
Size (mm)
3
Pump Data
2. INSTALLATION
Enclosure Class: F Insulation Class: IP68 Speed:2900rpm
Weight
(kg)
Model Outlet
Voltage
(V) HP
Power
kW
Current
(A) H1
Dimensions (mm)
H2
3x415 3 2.2 5.2 3” 35 153
1x240 0.1 0.75 63” 35
35568
18.5464
35
57
63
35
24
14
63
57
13.5
169
84
536
556
605
645
451
373
115
64
410
638
678
2
3
5
7.5
1.5 12
2.2 5.2 3”
3.7 8.6 4”
5.5 12 4”
3”
1 0.75 6 2”
1x240
1x240
1x240
3x415
3x415
3x415
1x240
3x415
3x415
0.5 0.37 4 2”
7.5
5
0.5
5.5
3.7
0.37
12
8.6
4
4”
4”
2”
50
50
35
6
6
6
6
6
6
1x240
1x240
2
1
1.5
0.75
12
6
22
22
164
164
215
215
155
97
541
416
220
220
2”
2”
If the pump is operated continuously for an extended
period of time in a dry condition or at the lowest water
level, the motor will overload and shut down. Prolonged
overheating will shorten pump service life. Do not start the
pump again in such a situation until after the motor has
completely cooled.
WARNING
ŸLower the pump into the well by attaching a
chain or rope to the grip to install the pump.
For DWV models firmly locate the discharge
connection on a base in the sump and amount
to guide rails suitably supported at the sump
top level. The pump rail guide should then be
slid down the pipes until the pump is firmly
seated on the discharge connection.
ŸThe pump must not be installed on its side or
operated under dry condition. Ensure that it is
installed upright on a secure base and is not
resting in silt or sand _____ normal operation.
ŸInstall the pump at a location in the tank where
there is least turbulence.
Operating Water Level
Stop Water Level
DWW/DWC
Fig 1
H1
H2
OFF
Fig 2
ON
DWV

4
ŸIf there is flow inside the tank, support the piping appropriately. The pipes must
be installed such as to prevent air lock, if unavoidable, an air release valve must
be installed wherever such air pockets are likely to develop.
ŸThe end of discharge pipe should not be submerged as back flow will result
For automatic pumps, install a oat switch as shown in Fig-
1. The pump may not start if the oat switch touches the
wall of the water tank or the piping.
WARNING
ŸThe Pump should be connected to either a rigid pipe or hose. The diameter
should be no less than the pump outlet.
ŸTo avoid dry running, on manual pumps an external float switch can be installed
as shown in Fig-2. Always ensure to maintain a safe operating water level.
ŸEnsure to never lift the pump by the main supply cable or permanent damage
will occur.
ŸAll installations must be provided with an isolator to cut off mains power supply
and coarse current protection in the form of a fuse or MCB rated at 2-3 times
the full load current as given on the pump plate.
ŸEnsure that the power supply rating complies with the specification on the pump
rating plate.
ŸElectrical connections must be made according to details in the pump junction
box cover and effective earthing must be provided according to local
regulations.
ŸSingle-phase motors are protected against overloads by a thermal overload
fitted in the motor windings. Three phase motors should be installed with
remote starter.
ŸRegularly check the current readings. If fluctuating, foreign matter may be
clogging the pump. Also if pump output reduces, foreign matter may be present
and the pumps hydraulic end should be checked and cleaned.
ŸMeasure the insulation resistance monthly. The value should be more than 1M
ohm.
3. ELECTRICAL CONNECTIONS
The installer is responsible for making electrical connections to
the mains supply in compliance with relevant local regulations.
Ensure that a professional electrician carries out the electrical
connections and that the following guidelines are followed:-
WARNING
4. MAINTENANCE

5
Annually Annually
Half yearly Half yearly
O-ring
5. TROUBLE SHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Check electrical connections
No power
Electrical fault
Replace
Faulty circuit breaker
Raise water level
Water level is below float switch
Adjust the position of the float switch
Float switch is not in appropriate level
Repair or replace
Float switch defective
Remove foreign matter
Foreign matter clogging pump
Repair or replace
Motor burned out
Repair or replace
Motor bearing broken
ŸIf resistance starts to fall rapidly even with an initial valve of over 1M ohm, this
will be an indication of a reduction in motor integrity and a qualified electrician
should be consulted.
ŸTo prolong the service life of the mechanical seal, replace the oil in the
mechanical seal chamber once a year.
ŸWater mixed with the oil or cloudy mixtures are indications of a defective
mechanical seal which requires replacement. When replacing the oil, lay the
pump on its side with filler plug on top and inject suitable amount of turbine oil
No.32 (ISO VG-32)
ŸAfter 3-5years conduct an overhaul of the pump, for general maintenance.
Replace the appropriate part when the following conditions are apparent.
Replacement
Guide
Lubrication
Oil
Oil Filter Plug
Gasket
Whenever oil in
mechanical seal
c h a m b e r i s
cloudy
Pump does not
start or starts but
immediately stops
Frequency
Whenever oil is
replaced
W h e n e v e r
c l o u d y o r
dirty
Whenever
p u m p i s
overhauled
Mechanical
Seal

Correct rotation
Reverse rotation
Disassemble and remove foreign matter
Pump clogged with foreign matter
Improve piping
Piping resonance
Open gate valve
Gate valve closed
Correct rotation
Reverse rotation
Check electrical connections
Electrical fault
Recalculate and adjust
Discharge head is high
Resize pipe
High frictional loss
Raise water level or lower pump
Air suction
Inspect and repair
Leaking from discharge pipe
Remove foreign matter
Clogging of discharge pipe
Remove foreign matter
Foreign matter in suction inlet
Remove foreign matter
Foreign matter clogging pump
Replace impeller
Worn out impeller
6
PROBLEM POSSIBLE CAUSE SOLUTION
Over current
Wait for supply to stabilise
Unbalanced current and voltage
Significant voltage drop
Inspect connections
Motor phase malfunction
Correct rotation
Reverse rotation
Replace pump with low head pump
Lower head. Excessive volume of water
Remove foreign matter
Foreign matter clogging pump
Replace bearingMotor bearing worn or damaged
Correct rotation
Reverse rotation
Raise water level
Motor under protection from dry
running
Lower liquid temperature
Motor under protection from high
liquid temperature
Does not pump
adequate volume
Pu mp vi bra tes ,
causing excessive
operating noise
Pump running but
stops after a while

7
ii) Standard Warranty
General Terms
If equipment failure occurs in the normal course of service having been
competently installed and when operating within its specified duty limits
warranty will be provided as follows:-
• Up to one year - The item will be replaced or repaired at no charge.
• Over one year, less than two year - The item will be replaced or
repaired at a cost to the customer of 50% of the Davis & Shirtliff
market price.
The warranty on equipment supplied or installed by others is conditional
upon the defective unit being promptly returned free to a Davis &
Shirtliff ofce and collected thereafter when repaired. No element of site
repair is included in the warranty and any site attendance costs will be
payable in full at standard chargeout rates. Also proof of purchase including
the purchase invoice must be provided for a warranty claim to be
considered.
7. TERMS OF WARRANTY
i) General Liability
• In lieu of any warranty, condition or liability implied by law, the liability of
Dayliff in respect of any defect or failure of equipment supplied is limited to
making good by replacement or repair (at the Company's discretion)
defects which under proper use appear therein and arise solely from faulty
design, materials or workmanship within a specified period. This period
commences immediately after the equipment has been delivered to the
customer and at its termination all liability ceases. Also the warranty period
will be assessed on the basis of the date that the Company is informed of
the failure.
ŸThis warranty applies solely to equipment supplied and no claim for
consequential damages, however arising, will be entertained. Also the
warranty specifically excludes defects caused by fair wear and tear, the effects
of careless handling, lack of maintenance, faulty installation, incompetence
on the part of the equipment user, Acts of God or any other cause beyond the
Company's reasonable control. Also, any repair or attempt at repair carried
out by any other party invalidates all warranties.

INS253B-10/14