DAYLIFF DDW 750V, DDW 750S Installation & Operating Manual

DDW

Drainage Pumps

Installation &

Operating Manual

DDW 750V

DDW 750S

PUMP SPECIFICATIONS

1.

1

2.

INSTALLATION

2

ELECTRICAL CONNECTIONS

3.

3

MAINTENANCE

4.

3

SAFETY WARNINGS

5.

4

TERMS OF WARRANTY

7.

5

INDEX

© Davis & Shirtliff Ltd 2014
Contents herein are not warranted

TROUBLE SHOOTING

6.

5

1

1. PUMP SPECIFICATION

Thank you

for

choosing Dayliff DDW drainage

pump. The pump has

been manufactured

to

the

highest standards

and

if

operated correctly

should give

many years

of

efficient and

trouble

free

service. Careful

reading of

this instruction manual is

therefore e

xtremely important

and if

you have

any

queries please refer

them

to your

retailer

.

3

FLOW (m /hr)

HEAD (m)

3

6

9

0

1

2

3

4 5 6

7

DDW 750S

DDW 750V

1

2

4

5

7

8

Pump

The DAYLIFF DDW submersible pump range are centrifugal submersible

pumps designed for small scale drainage, irrigation, fountain and water
transfer applications. Two versions are available, the standard S version with
open impeller for lightly turbid water and the vortex V version for water with
higher silt loads.

Pump construction is of high strength engineering plastic for the pump casing,

suction base and impeller and an external float switch is provided for
automatic pump control. All pumps are supplied with 5m of waterproof
power cable and a union connected outlet suitable for threaded or hose
connection.

Motor

Pumps are provided with intergral non-overloading induction motors designed

for continuous operation.

DDW 750V

DDW 750S

2

A thermal cut-out is provided in the motor winding to protect against pump overload
and the pump can be connected directly to the mains power supply through a 10A
fuse or MCB.

Enclosure Class: IP68 Insulation Class: F Voltage:1x240V

OPERATING CONDITIONS

Pumped liquid: Thin, clean, chemically non-aggressive liquid containing some
particles and fibres.

0

Max fluid temperature: +35 C
Max Operating Depth: 8m

Pump

Motor

Dimensions (mm)

Weight

(kg)

kW

Amps

W

0.75

5.2

1¼”

220 320

5.0

0.75

5.2

1¼”

250 350

6.0

Outlet

H

DDW 750S

DDW 750V

Pump Data

2. INSTALLATION

! The pump can be used for various drainage and

water transfer installations for tanks, ponds and
basements. It is best installed in a sump of
minimum 40cm square and 50cm deep to
allow for float switch operation.

! The pump should not be suspended by its cable

or delivery pipe. It should either rest on a solid,
level base or be suspended by steel cable or
chain.

! The pump may be connected by either a rigid pipe or hose; diameter should

be no less than the outlet connector.

! Ensure the pump is not resting in silt or sand during normal operation or

impeller damage will occur.

! Adjust the low level control switch on its clip to ensure free float movement

and sufficient time between start and stop cycles.

min400

min500

3

3. ELECTRICAL CONNECTIONS

!

supply and coarse current protection in the form of a fuse or MCB rated at 2­3 times the full load current as given on the pump plate.

! Ensure that the power supply rating complies with the specification in these

instructions.

! Effective earthing must be provided according to local regulations.
! Motors are protected against overloads by a thermal overload fitted in the

motor windings.

All installations must be provided with an isolator to cut off mains power

4. MAINTENANCE

The pump requires no routine maintenance and if correctly installed, should give
long term trouble free service. However, the following should be noted:-

• If pump performance drops check for debris in the impeller. If observed, flush
with water to clean. If this action is insufficient remove the suction cover and
clean around the impeller.

! Particularly check the pump seating location and clear any debris and silt that

may have accumulated.

5. SAFETY WARNINGS

! Do not install the pump in swimming pools or ponds where they may be

people using the water.

! When lifting or transporting do not lift by the cable, float switch or delivery

pipe. Always use the handle.

! Ensure that the cable termination is well away from the pumped water source

and protected from weather and splashing.

! Pump should only pump lightly silted water and not flammable and viscous

liquids.

WARNING

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

Before carrying out any maintenance ensure the electrical supply is
isolated.

4

6. TROUBLE SHOOTING

PROBLEM

POSSIBLE CAUSE SOLUTION

Pump runs
with no flow

Pump suction sieve clogged

Delivery hose obstructed

Clean suction (See Maintenance
section)

Check delivery hose & rectify

Low flow

Pump suction obstructed

Check suction

Delivery head too high

Reduce delivery head

Specify different pump

Pump
does not
run

No mains supply

Level switch not switching on

Check mains supply

Check switch adjustment

Low water level

Thermal cutout tripped due to
overload

Check pump suction
Pump stops
after short
operating
period

Check mains power voltage

Check water temperature is

0

below 35 C

5

7. TERMS OF WARRANTY

i) General Liability

! In lieu of any warranty, condition or liability implied by law, the liability of

Davis & Shirtliff (hereafter called the Company) 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.

! This 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.

ii) Standard Warranty

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 years - 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
office 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.

i) General Liability

ii) Standard Warranty

INS181C-10/14