DAYLIFF DDA Series Installation instructions

DDA 1200C DDA 900C
DDA 1000P
DDA
Submersible Well Pumps
Installation &
Operating Manual

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

PUMP
DAYLIFF DDA submersible multistage centrifugal pumps are designed for
pumping clean, non-aggressive water in various domestic and light duty
applications. They are particularly suitable for wells and boreholes, though can
also be used for water transfer from tanks, irrigation and pressure boosting
applications as an alternative to a conventional dry mounted pump. A particular
design feature is the jacketed motor arrangement which provides excellent
cooling and allows the pump to work semi-submerged. The pumps’ design
features mechanical seals (twin on DDA1200C2) in an intermediate oil chamber
for greater pump reliability and pump construction is Polypropylene impellers and
diffusers and stainless steel pump casing.
Pumps can be fitted with a pressure controller for automatic operation. All pumps
are supplied complete with 20m cable.
DDA1000P & DDA1200C2 are fitted with a low level float switch with adjustment
clamp and an inbuilt capacitor for simplified installation and are particularly
suitable to well and tank applications.
1
1. PUMP SPECIFICATIONS
PUMP HEAD (m)
3
FLOW RATE (m/hr)
20
70
10
0
30
60
40
1 2 3 4 5 6
50
DDA 1200C2 DDA 900C
DDA 1000P
7
DDA 1200C2
DDA 900C
DDA 1000P
Congratulations on selecting a Dayliff DDA 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.

2
DDA900C is particularly suited to borehole applications and is supplied with an
external control box which incorporates an isolator, run indicator light, thermal
overload protection and starting capacitor which can be connected directly to
mains power. The box is also provided with auxiliary terminals for control probes,
pressure switch or float switch.
MOTOR
Enclosed and rewindable liquid cooled, non-overloading induction motor
designed for continuous operations incorporating a thermal cut-out in the
windings to protect against overloading. Pumps can be connected directly to the
mains power supply through a 10A fuse or MCB.
Enclosure Class: X8 Insulation Class: B Voltage: 1x240V
Speed: 2900rpm
OPERATING CONDITIONS
Pumped Liquids: Thin, chemically non aggressive liquids without solids or
fibres
0
Max. Liquid temperature: 35 C
Max. Immersion Depth: DDA1000P- 6m;DDA1200C2 - 20m; DDA900C -
16m
Max. Particle Size: DDA1000P -1.5mm; DDA900C & DDA1200C2 - 1.0mm
PUMP DATA
Model Power
HP
kW
Max.
Current
(A)
Outlet
(”)
Dimensions (mm) Weight
(kg)
WH
DDA 900C 1.2
0.9 645 11
100
3.9
1
1.2
0.92 577 18
128
6.5
DDA 1200C2
1.31.0 440 9.4
150
4
DDA 1000P
DDA 900C DDA 1200C2 DDA 1000P
H
w
H
w
H
w

3
1
2
4
6
5
1. Carrying Handle
2. Float switch height adjustment
3. Mains cable and plug
4. Float switch (not DDA900C)
5. Pump outlet
6. Pump casing
ŸAttach a sufficiently long and strong rope to the handle and lower the pump until it
is submerged into the well.
ŸConnect the discharge using a suitable water hose or pipe. The use of rigid pipes
with a non-return valve is recommended for use at fixed locations. This prevents
return flow of the water when the pump is switched off.
i) Screw pressure line onto the pressure connection. All threaded connections
must be sealed with thread sealing tape (e. g. Teflon® tape).
ii) When using a hose, screw a suitable hose adapter onto the pump outlet and
secure the hose with a clamp.
ŸDDA 1200C2 and DDA1000P need an area of at least 50 × 50 cm (the
floatswitch must be able to move freely so that it functions properly). These are
fitted with an inbuilt capacitor and thermal control and can be connected to mains
power directly after a 10A MCB or fuse.
ŸDDA 900C is more applicable for use in boreholes and shallow wells and low level
controls should be provided by a separate level control switch. As standard it is
supplied with a separate control unit which can be connected directly to mains
power after 10A MCB or fuse.
ŸThe pumps may be submerged under water up to the allowable submerged
operating depth as given in the technical data.
ŸThe installation must be such that the suction openings are not blocked by foreign
bodies.
The rope must be checked regularly for wear and tear and
replaced if necessary.
3
2. INSTALLATION
WARNING

ŸAfter the pump has been connected to the mains power supply, it is ready for use.
ŸUsing a strong rope, submerge the pump at an
angle into the water so that no air pocket forms on
the underside of the pump. Once the pump is
submerged, lower it vertically.
Do not lift the pump with the cable or pressure hose as these
are not designed to carry the weight of the pump.
When fitted the float switch must be able to move so that the
submersible pump does not run dry.
ŸDo not operate the pump without pressure hose.
ŸAvoid the pump twisting around its longitudinal axis.
Periodically, e.g monthly, when permanently installed, the following should be carried
out;
ŸCheck casing and cables for damage through visual inspection.
ŸCheck float switch operation by lifting and shaking the switch to check the free
movement of the contained weights.
ŸRinse the pump with clean water to remove particles, a brush and detergent may be
used. Submerge the pump in a container with clean water and switch on for a short
time to rinse the inside of the pump.
ŸClean all accessible areas of the casing. Remove fibres which may be wound
around the rotor shaft by opening the pressure connection.
ŸAfter a long time of storage “soak” the pump so that any possible dirt residues may
be removed.
4
WARNING
WARNING
3. MAINTENANCE
WARNING

5
4. TROUBLE SHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
Pump does not
run
Check connections and power supplyNo power
Pump runs with
no output
Motor overheating due to:
i) Liquid temperature being too high
ii) Blocking by foreign bodies
Eliminate the cause of overheating
Residual current circuit breaker
triggered Reset circuit breaker
Check motorMotor defective
Clear blockage
Suction openings blocked
Keep the pump at an angle while
submerged
Pump drawing in air
Clean the suction area
Pump blocked by foreign bodies
Flow rate
insufficient
Readjust to allowable delivery heightDelivery height too big
Use pressure line with larger diameterPressure line diameter too small
Clean suction openingSuction openings blocked
Straighten pressure linePressure line kinked
Seal pressure line, tighten threaded
connections
Pressure line leaks
Pump runs very
loudly Keep the pump at an angle when
submerged
Ensure there is sufficient water at
suction
Pump drawing in air

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:-
Ÿ Up to six months- The item will be replaced or repaired at no charge.
Ÿ Over six months, less than one 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
charegeout rates. Also proof of purchase including the purchase invoice must be
provided for a warranty claim to be considered.
6
5. TERMS OF WARRANTY
i) General Liability
ii) Standard Warranty
• In lieu of any warranty, condition or liability implied by law, the liability of Dayliff
(hereafter called the Distributor) in respect of any defect or failure of
equipment supplied is limited to making good by replacement or repair
(at the Distributor’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 Distributor 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
Distributors's reasonable control. Also, any repair or attempt at repair carried
out by any other party invalidates all warranties.

INS300D-07/20