Clarke ISP11A Manual

OPERATING & MAINTENANCE

INSTRUCTIONS

Model: ISP11A

SUBMERSIBLE WATER PUMP

0308

SUBMERSIBLE WATER PUMP

Model: ISP11A

Thank you for purchasing this Clarke Submersible Pump.

This highly efficient centrifugal pump is It is ideally suited for draining ponds, pools,

cellars, drains, building excavations , etc., and for pumping dirty water from septic

tanks where the solids in suspension are not greater than 50mm dia., and where

water temperature does not exceed 50°C. (please see Pump Features, page 5).

The pump is NOT suitable for pumping salt water, aggressive or chemical

substances, or for permanent installation in fish ponds, as the acidity, found in fish

ponds, will damage the pump seals. It MUST NOT be used for pumping

hydrocarbons (petrol, diesel fuel, oils, solvents etc.).

Before using the pump, please read this instruction manual thoroughly and carefully

follow all directions given. This is for your own safety and for that of others around

you, and will also help you achieve long and trouble free service from your pump.

GUARANTEE

This product is guaranteed against faults in manufacture for 12 months from

purchase date. Keep your receipt as proof of purchase. This guarantee is invalid

if the product has been abused or tampered with in any way, or not used for the

purpose for which it is intended. The reason for return must be clearly stated. This

guarantee does not affect your statutory rights.

Please note that dismantling this pump will invalidate the guarantee

CONTENTS

Guarantee .................................................................... 2

Safety Precautions ....................................................... 3

Electrical Connections ................................................ 4

Pump Features ............................................................. 5

Installation ..................................................................... 6

Maintenance ............................................................... 7

Trouble Shooting .......................................................... 8

Pump Specifications .................................................... 9

Parts List and Diagram................................................. 10

Parts and Servicing ...................................................... 11

Declaration of Conformity.......................................... 11

When disposing of this product, do not dispose of with general waste. It must be disposed of according to the laws

governing Waste Electrical and Electronic equipment, at a recognised disposal facility.

SAFETY PRECAUTIONS

1. This pump is designed to pump WATER ONLY. Never use for pumping

flammable liquids or chemicals of any kind.

2. NEVER allow the pump to run dry.

3. An approved Residual Current Device (RCD) MUST be used when pumping

from ponds or swimming pools.

4. Your submersible pump may ONLY be used for pumping water from a swimming

pool when there is no person or animal in the pool.

5. ALWAYS disconnect the pump from the electrical supply

before placing into, or removing from water, and

before any cleaning or maintenance.

6. When raising or lowering the pump, ALWAYS use

a rope or chain attached tothe handle. NEVER

lift or carry the pump by the mains cable or the

float switch cable.

7. DO NOT run the pump with the body exposed

for longer than 10 minutes.

8. DO NOT install the pump on sand, silt, mud etc.,

or ground which is likely to shift.

9. If pumping water which is liable to freeze, the

pump MUST be run continuously, otherwise the pump must

be removed from the water and stored in a frost free location.

10. If the pump is to be used where there may be silt or mud

(e.g., garden ponds), ALWAYS keep the pump clear of any sediment by

standing it on a platform or bricks or suspending from a rope or chain attached

to the handle.

11. DO NOT use for permanent installation in pumping clean or pure water,

(particularly drinking water), as there is the remote risk of contamination, should

there be a leak in the seal device.

12. If the mains cable becomes damaged, it MUST be replaced - NOT repaired.

(see Electrical Installation).

13. If used in a confined space - in a shaft or sump etc., ENSURE the float has

sufficient room to operate correctly (see Installation on page 6).

14. Connection to the mains supply MUST be made well clear of the water, or, if in close

proximity, it must be completely waterproofed and secured to prevent the possibility

of it coming into contact with water. If necessary consult a qualified technician.

WARNING

Failure to comply with these safety precautions could be extremely

hazardous, not only causing a risk to personal safety but also damage to

the pump, which could invalidate your guarantee.

ELECTRICAL CONNECTIONS

The mains lead should be connected to a standard 230Volt (50Hz) electrical supply

through an approved 13Amp BS 1363 plug or a suitably fused isolator switch. We

recommend that the pump be connected via a Residual Current Device (RCD).

MPORTANT:

If used for draining swimming pools or ponds, it is mandatory that the

pump be fitted with a Residual Current Device (RCD), with a rated

residual operating current of no greater 30mA.

If the pump is to be connected to an outdoor electrical supply, make sure that

both the plug and the socket are of a BS approved waterproof design.

In the event that the pump is hard wired into the electrical system, it must be

carried out in accordance with IEE regulations.

WARNING: THIS APPLIANCE MUST BE EARTHED

IMPORTANT: The wires in the mains lead are coloured in accordance with the

following code: Green & Yellow - Earth

Blue - Neutral

Brown - Live

As the colours of the flexible cord of this appliance may not correspond with the

coloured markings identifying terminals in your plug proceed as follows:

Connect GREEN & YELLOW cord to plug terminal marked with a letter “E” or

Earth symbol “ ” or coloured GREEN or GREEN & YELLOW.

Connect BROWN cord to terminal marked with a letter “L” or coloured RED

Connect BLUE cord to terminal marked with a letter “N” or coloured BLACK

FUSE RATING

The fuse in the plug for this appliance must be rated at 13 amps.

If this appliance is fitted with a plug which is moulded onto the electric cable (i.e.

non-rewirable) please note:

1. The plug must be thrown away if it is cut from the electric cable. There is a

danger of electric shock if it is subsequently inserted into a socket outlet.

2. Never use the plug without the fuse cover fitted.

3. Should you wish to replace a detachable fuse carrier, ensure that the correct

replacement is used (as indicated by marking or colour code).

4. Replacement fuse covers can be obtained from your local dealer or most

electrical outlets

5. The fuse in the plug must be replaced with one of the same rating (13 amps)

and this replacement must be approved to BS1362.

If the power cable becomes damaged, IT MUST BE REPLACED, DO NOT REPAIR.

Return the pump to your Clarke dealer, or contact Clarke Service Department on:

020 8988 7400

IMPORTANT:

If you are in any doubt regarding electrical installation, you should consult a

qualified electrician. DO NOT attempt any electrical repairs yourself.

PUMP FEATURES

The pump is of rugged and durable construction, designed for long lasting

continuous operation and its’ stainless steel body provides good anticorrosive

properties. The motor is provided with built in overload protection.

For your information, the chart on page 9 shows the flow rate for the pump at

various heads. (HEAD is the distance, or height, from the surface of the water to

the point of discharge)

The pump is designed to pump water containing solids in suspension with a

maximum diameter of 50mm .

It is NOT designed for permanent installation in fish ponds or any water containing

chemicals or other acidic contaminants including salt water.

Whenever the pump is used to pump contaminated water, e.g. to drain septic

tanks, fish ponds etc., you must ALWAYS immerse the pump in clean water and

run it for a few minutes on completion to ensure it is completely cleansed of all

contaminants.

The maximum depth to which the pump should be submerged is 7.4 metres and

it will deliver water to a max. head of 7.4 metres

The pump is fitted with a Float Switch and is suitable for permanent or semi-

permanent installations, e.g. installations where it is necessary to maintain a water

at a particular level.

As the water level rises, so will the float. At a certain point the switch will operate

and start the pump. As the water level falls, so will the float until the switch operates

again and stops the pump.

Float switches are adjusted at the factory to provide the correct ON-OFF switching

mode, however, you can adjust the level at which the pump cuts in and out by

sliding the float switch cable through the clip attached to the main body. Shorten

or lengthen it as the case may be. The shorter it is, the earlier the pump will cut

out, and the water therefore will be deeper at this point. Similarly, it will cut in

earlier and the water will therefore be shallower when it does so.

It should not normally be necessary to change the length of cable (from the

clamp to the float switch), but should you do so, remember that the cable length

should NEVER be so long that the float switch fails to operate and switch the

pump OFF. ALWAYS check its operation before use.

Similarly, the cable length must not be so long so as to allow the water level to

drop below the level of the outlet pipe.

INSTALLATION

The pumps’ delivery outlet is provided with a 2” BSP female thread, for connection

to a suitable adapter (not provided). It is advisable to seal the thread with PTFE, or

similar tape, to ensure maximum performance from your pump.

The delivery hose used should be of the same ID as the delivery outlet and

completely sound. Any holes, no matter how small, will reduce the efficiency of

the pump, or even prevent the pump from delivering water at all. Smaller diameter

hose will reduce capacity and put additional strain on the motor.

Where it is necessary for long horizontal stretches of delivery hose to be used, the

hose ID should be greater than that of the delivery outlet.

Having connected the delivery hose, secure a suitable length of rope or chain to

the pump handle, and plunge the pump into the water.

The pump must be in a vertical position on a solid flat surface. If this is not available,

sit the pump on house bricks, or something similar, and ensure that this type of

support is not likely to shift.

The pump should be well clear of silt, mud or any type of marine growth.

IMPORTANT:

ALWAYS raise and lower the pump using a rope attached to the lifting

handle, NEVER by the power cable.

Ensure the sump, or bore hole, has

adequate dimensions so as not to restrict

the movement of the float switch (see

fig.1 for recommended minimum size).

The calculation, for the dimensions of the

bore hole, must also take into account

the quantity of water arriving and the

pump flow rate, so as not to subject the

motor to excessive starting operations,

bearing in mind, the pump should not be

started more than 20 times per hour.

Take all necessary precautions as

described on page 4 before plugging

in, and switching ON.

NOTE:

a. The symbol on the pumps’ Rating Plate, denotes the MAXIMUM depth to

which the pump may be submerged, in metres.

b. When the pump is used in a permanent or semi-permanent installation, a

check valve MUST be fitted in the delivery pipe.

IMPORTANT:In such situations, care must be taken to ensure that all air is

expelled from the delivery side of the pump when immersing in water.

Fig.1

MAINTENANCE

WARNING

Before checking the condition of the pump, ensure it is unplugged from the

mains supply. If the unit is hard wired, ensure the circuit breaker is open.

The pump should require no maintenance other than regular cleaning. Its’

mechanical seal is lubricated in an oil chamber, and its’ bearings are ‘sealed for

life’. If the pump starts to show signs of wear or damage, contact your CLARKE

dealer for advice. Do not use the pump if there is any damage to the mains

supply cable, or to the float switch or its cable.

Check the pump installation regularly to ensure the base inlet is clear of leaves or

other debris.

Note that the pump is fitted with automatic thermal overload protection. If it

overheats due to an obstruction in the pump, or pumping warm water in excess

of 50oC for example, it will shut off automatically. Switch the pump OFF and

disconnect from the mains supply. Check for blockages and allow the motor to

cool (at least 15 minutes) before attempting to restart.

Do not attempt to repair the pump yourself, as you may damage the seals and

invalidate your guarantee. Repairs must be carried out by a qualified pump

engineer, your CLARKE dealer, or contact the CLARKE Service Department, on:

020 8988 7400

If the pump becomes badly clogged, backflush the pump chamber by directing

a jet of clean water through the outlet port. If you remove the outlet port adapter

when you perform this operation, take the opportunity to inspect the impeller for

wear or damage, viewing it through the outlet port.

WARNING:

Do not attempt to strip the pump further as this will invalidate the guarantee

ANNUALLY OR EVERY 2000 WORKING HOURS (Whichever is sooner)

The sealing oil must be checked by a qualified pump engineer. Consult your Clarke

dealer, or Clarke International Service Department.

SUITABLE HOSE AND HOSE ADAPTERS

ARE AVAILABLE FROM YOUR CLARKE DEALER

TROUBLE SHOOTING

A. PUMP WILL NOT START

1. Check to ensure Power is switched on.

2. Check fuse (consult an electrician if in doubt).

3. If extension lead is fitted, check connections (consult an electrician if in

doubt).

4. Internal thermal cutout has not reset. Leave for 15 minutes and try again.

5. The Impeller may be jammed. Disconnect from the mains supply, remove

the bottom strainer and outlet connection. Remove any objects that may

be obstructing the impeller. Replace the strainer and try again.

6. Float switch may be jammed against side wall or prevented from moving.

7. Water level too low - float switch in OFF position - Lift float to check switch.

If the pump still fails to start, consult your CLARKE dealer for advice.

B. PUMP WILL START BUT NOT PUMP

1. Check to ensure strainer is not blocked - clean as necessary

2. Discharge tube clogged or obstructed - clear as necessary.

3. The head may be too great, i.e. you are trying to lift the water too great a

distance for the pump to cope with. (See specifications pages 9 ).

4. Impeller may be damaged - Consult your CLARKE dealer

C. PUMP WILL NOT STOP

1. Float switch may be prevented from moving to the fully down position.

2. Float switch may be faulty. Consult your CLARKE dealer for advice.

D. PUMP STOPS RUNNING

1. Thermal overload has operated. If this condition persists, investigate the

cause. Are you attempting to pump liquid which is too dense for the pump

(mud, slurry etc.), or too high a temperature.

2. Pump has run dry, or float switch has cut in.

3. A foreign object has jammed the impeller.

SPECIFICATIONS

Motor .......................................................................... 230V 50Hz 1ph

Motor Rating (Nominal -Output) .............................. 927W

Input Current .............................................................. 4.13Amps

Fuse Rating ................................................................ 13 Amps

Outlet Connection .................................................... 2” BSP Female

Head Max. ................................................................. 7.4m

Max. Submersion Depth ........................................... 7.4m

Max. Capacity .......................................................... 333 l/min

Max. Water Temperature .......................................... 50°C

Weight (unpacked) ................................................... 11.7kg

Cable Length ............................................................. 10m

Part No. ...................................................................... 7230091

Fig.2

WARNING!

Connection to the mains supply MUST be made well clear of the water, or, if in close

proximity, it must be completely waterproofed and secured to prevent the possibility

of it coming into contact with water. If necessary consult a qualified technician.

A - 203mm

B - 170mm

C - 2” BSP

D - 172mm

E - 98mm

H - 492mm

Parts List and Diagram

Item Description Part No Item Description Part No

1 OR/Seals DABR00004190 9 Seal DABR00004133

2 Bearing Support DABR00004134 10 Cables Cover DABR00004135

3 Front Bearing DABR00004129 11 Cover DABR00004137

4 Motor Shaft DABR00004126 12 Nuts and Bolts DABR00004128

5 Rear Bearing DABR00004130 13 Motor DABR00004191

6 Pump Body DABR00004125 14 Capacitor DABR00004140

7 Impeller DABR00004131 15 Cable DABR00004139

8 Seal Disk DABR00004192 16 Float DABR00004138

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