Grundfos JP5 User manual

Installation and operating instructions

GRUNDFOS INSTRUCTIONS

English (GB)

English (GB) Installation and operating instructions

Original installation and operating instructions.

CONTENTS

Page

1. Symbols used in this document

2. General information

These instructions apply to JP 5 and JP 6 pumps in

material variants A and B.

3. Applications

The Grundfos jet pumps, type JP, are horizontal,

self-priming centrifugal pumps designed for pumping

water and other thin, non-aggressive and

non-explosive liquids, not containing solid particles

or fibres.

If the pump has been used for dirty liquids, e.g. pool

water, flush it through with clean water immediately

after use.

1. Symbols used in this document 2

2. General information 2

3. Applications 2

4. Identification 3

5. Installation 3

5.1 Handle 3

5.2 Ejector valve 3

6. Electrical connection 4

6.1 Checking the direction of rotation

(three-phase motors) 4

7. Startup 5

7.1 Filling the pump with water 5

7.2 Shaft seal run-in 5

8. Maintenance 5

8.1 Cleaning the pump 5

8.2 Frost protection 6

9. Technical data 7

10. Fault finding 8

11. Disposal 9

Warning

Prior to installation, read these installation

and operating instructions. Installation and

operation must comply with local

regulations and accepted codes of good

practice.

Warning

The use of this product requires

experience with and knowledge of the

product.

Persons with reduced physical, sensory or

mental capabilities must not use this

product, unless they are under supervision

or have been instructed in the use of the

product by a person responsible for their

safety.

Children must not use or play with this

product.

Warning

If these safety instructions are not

observed, it may result in personal injury.

Warning

If these instructions are not observed, it

may lead to electric shock with consequent

risk of serious personal injury or death.

Warning

When pumping hot liquids, make sure that

persons cannot accidentally come into

contact with hot surfaces.

Caution

If these safety instructions are not

observed, it may result in malfunction or

damage to the equipment.

Note

Notes or instructions that make the job

easier and ensure safe operation.

Warning

Do not use the pump for flammable liquids,

such as diesel oil and petrol.

Warning

Do not use the pump for aggressive

liquids, such as acids and seawater.

English (GB)

4. Identification

Fig. 1 Nameplate

5. Installation

The pump must be installed horizontally.

When the suction pipe is longer than 10 metres or

the suction lift is greater than 4 metres, the diameter

of the suction pipe must be larger than 1". If there is

a suction lift, we recommend that you fit a non-return

valve to the suction pipe.

If a hose is used as a suction pipe, it must be

non-collapsible.

To prevent solids from entering the pump, a filter can

be fitted to the suction pipe.

Make sure that the pump is not stressed by the

pipework.

Connect the discharge pipe to the pump discharge

port (T). See fig. 2. H = maximum 7 metres.

Fig. 2 Pipe connection

Installation dimensions can be found on page 10.

5.1 Handle

It is not necessary to fit the handle supplied on

permanently installed pumps.

On portable pumps the handle can be fitted

lengthwise or crosswise depending on the material

variant.

5.2 Ejector valve

The ejector valve is supplied separate with the

pump.

Remove the plug (V), see fig. 5, and fit the ejector

valve into the hole.

TM05 1797 3711

Pos. Description

1Type

2 Model

3 Supply voltage

4 Maximum current

5 Frequency

6 Maximum pressure

7 Maximum head

8 Country of origin

9 Rated head

10 Enclosure class

11 Input power

12 Rated flow rate

13 Maximum ambient temperature

14 Maximum liquid temperature

15 Efficiency class

16 Production company

Type

Model

Imax

Pmax

Hmax Hnom

P1Hz

MPa/Bar

Qnom

Tamb, max

Tliq, max

m /h

1098 11

TM05 1796 3711

Note

The O-ring must be fitted to the ejector

valve.

Tighten the valve using fingers only.

Max. 7 m

English (GB)

5.2.1 Ejector valve setting

The ejector valve in the plug hole (V) can be turned

to two positions. See fig. 4.

Figure 3shows an example of how the ejector valve

position may affect the QH curve.

Fig. 3 QH curve and ejector valve positions

Pos. 1

Turn the valve to the left (out).

Select pos. 1 when the suction pipe is empty and the

pump is to be primed.

Select also pos. 1 when a small quantity of water and

a high pressure are required.

Pos. 2

Turn the valve to the right (in).

Select pos. 2 when the pump has been primed, and

a large quantity of water and a low pressure are

required.

Fig. 4 Ejector valve positions

6. Electrical connection

Carry out the electrical connection according to local

regulations.

Single-phase motors incorporate a thermal switch

and require no additional motor protection.

Three-phase motors must be connected to an

external mains switch and a motor-protective circuit

breaker.

Carry out the electrical connection as shown in the

diagram on the inside of the terminal box cover.

6.1 Checking the direction of rotation

(three-phase motors)

Arrows on the motor fan cover indicate the correct

direction of rotation.

If the direction of rotation is wrong, switch off the

power supply and interchange any two of the

incoming supply wires.

TM00 7474 1396

Warning

This position must only be used for high

flow rates and constant water

consumption.

Pos. Ejector valve Direction

1Left

(out)

TM04 2299 2308

2Right

(in)

TM04 2300 2308

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 Q [m³/h]

[m]

0.00 0.25 0.50 0.75 1.00 Q [l/s]

JP 5

IS O 9906 Annex A

Pos.1

Pos.2

Warning

During electrical installation, make sure

that the power supply cannot be

accidentally switched on.

Warning

The pump must be connected to an

external mains switch with a minimum

contact gap of 3 mm in all poles.

As a precaution, the pump must be

connected to a socket with earth

connection.

We recommend that you fit the permanent

installation with an earth leakage circuit

breaker (ELCB) with a tripping current ≤30

mA.

Warning

Do not start the pump until it has been

filled with liquid.

English (GB)

7. Startup

7.1 Filling the pump with water

1. Remove the plug (P). See fig. 5.

2. Fill the pump with water.

3. Refit the plug and tighten it using fingers only.

The pump can now be started.

Fig. 5 Filling the pump with water

If there is a suction lift, up to four minutes may pass

from the moment the pump is started until it delivers

water. This period depends on the length and

diameter of the suction pipe.

When the pump is delivering water without air, you

may turn the ejector valve to position 2. See fig. 4.

7.2 Shaft seal run-in

The seal faces are lubricated by the pumped liquid,

meaning that there may be a certain amount of

leakage from the shaft seal.

When the pump is started up for the first time, or

when a new shaft seal is installed, a certain run-in

period is required before the leakage is reduced to

an acceptable level. The time required for this

depends on the operating conditions, i.e. every time

the operating conditions change, a new run-in period

will be started.

Under normal conditions, the leaking liquid will

evaporate. As a result, no leakage will be detected.

8. Maintenance

If the pump has been used for dirty liquids, e.g. pool

water, it must be flushed through with clean water

immediately after use.

8.1 Cleaning the pump

It is only necessary to clean the pump if it does not

work as intended and flushing it with clean water did

not eliminate the problem.

The position numbers mentioned in the following

sections refer to fig. 6.

8.1.1 Dismantling

1. Pumps with ejector valve: Turn the ejector valve

to pos. 1. See fig. 4.

2. Drain the pump by removing plug (pos. 25) or

ejector valve (pos. 25a).

3. Remove screw (pos. 93) and clamp (pos. 92)

holding pump sleeve (pos. 16).

4. Push pump sleeve (pos. 16) free of the motor

stool with a screwdriver and take it off.

5. Pull ejector (pos. 14) out of the pump sleeve.

6. Clean the ejector and the pump sleeve using a

soft brush or a water jet.

7. Check if impeller (pos. 49) is dirty. If that is the

case, clean the impeller (in place) using a soft

brush or a water jet. See fig. 7.

To prevent the impeller and shaft from rotating,

hold the motor fan blades.

Warning

Do not start the pump until it has been

filled with liquid.

Caution

The pump must not run without delivering

water for more than four minutes.

TM00 5495 4995

Warning

Before starting work on the product, switch

off the power supply. Make sure that the

power supply cannot be accidentally

switched on.

Warning

Make sure that the escaping hot or cold

liquid does not cause injury to persons or

damage to the equipment.

Caution

Do not use a high-pressure jet cleaner.

English (GB)

8.1.2 Assembly

1. Moisten O-ring (pos. 13) with soapy water and fit

it into the recess of the suction port of ejector

(pos. 14).

2. Fit the ejector into pump sleeve (pos. 16). Check

that O-ring (pos. 13) is positioned correctly on the

collar of the suction port of the sleeve.

3. Moisten O-ring (pos. 31) with soapy water and

place it on the ejector.

4. Moisten seal ring (pos. 91) with soapy water, fit it

into the recess of the ejector and turn it against

the stop.

5. Fit the pump sleeve with the ejector to the motor

stool. Check that O-ring (pos. 31) is positioned

correctly.

6. Place clamp (pos. 92) on the pump sleeve, and fit

and tighten the screw and nut.

7. Refit plug (pos. 25) or ejector valve (pos. 25a).

Check that the ejector valve is in position 1. See

fig. 4. Tighten the plug or ejector valve using

fingers only.

In orders for spare parts, please mention the position

number in fig. 6and the pump data marked on the

pump nameplate.

Fig. 6 Exploded view of jet pump

Fig. 7 Cleaning the impeller

8.2 Frost protection

To drain the pump, remove the plug (P) and the plug

or the ejector valve (V). See fig. 8.

Fig. 8 Draining the pump

Refit the plugs and tighten them using fingers only.

TM051536 3411

Note

The pump illustrated in fig. 6may differ

from the actual pump version.

TM05 1803 3811

Caution

If the pump is not used during periods of

frosts, it must be drained to avoid damage.

TM00 5497 4995

Warning

Make sure that the escaping hot or cold

liquid does not cause injury to persons or

damage to the equipment.

°C

-20

-10

English (GB)

9. Technical data

Ambient temperature

Maximum +40 °C.

Storage temperature

Minimum -20 °C.

Maximum +70 °C.

Liquid temperature

See pump nameplate.

System pressure

Maximum 6 bar.

Inlet pressure

At inlet pressures above 1.5 bar the discharge

pressure must be at least 2.5 bar.

Supply voltage

1 x 220-240 V, 50 Hz.

3 x 220-240/380-415 V, 50 Hz.

Insulation class

Enclosure class

IP44.

Relative air humidity

Maximum 95 %.

Dimensions

See page 10.

Sound power level

The sound power level of the pump is lower than

72 dB(A).

Start/stop frequency

Maximum 100 per hour.

English (GB)

10. Fault finding

Warning

Before starting fault finding, switch off the

power supply. Make sure that the power

supply cannot be accidentally switched on.

Fault Cause Remedy

1. The pump does

not start.

a) Supply failure. Cut in the circuit breaker or replace the fuses.

If the new fuses also blow, check the electric

installation.

b) Pump blocked by impurities. Clean the pump. Check or replace the strainer

in the suction pipe.

c) Motor defective. Repair or replace the motor.*

d) Three-phase motors:

The motor-protective circuit

breaker has tripped.

Cut in the motor-protective circuit breaker.

If the problem still persists, check these two

possible causes:

• Impeller stuck.

Clean the pump according to section 8.1.

• Motor defective.

Repair or replace the motor.*

2. The pump runs,

but gives no water

or delivers a

reduced quantity

of water.

a) Pump is not filled with water. Prime the pump. See section 7.

b) Suction pipe blocked by

impurities.

Clean the pump. Check or replace the strainer

in the suction pipe.

c) Pump blocked by impurities. Clean the pump. Check or replace the strainer

in the suction pipe.

d) Suction lift is too high (over 7

metres).

Change the position of the pump.

e) Suction pipe is too long. Change the position of the pump.

f) Diameter of suction pipe is

too small.

Replace the suction pipe.

g) Suction pipe is not immersed

deeply enough.

Make sure that the suction pipe is immersed

sufficiently.

h) Suction pipe is leaking. Repair or replace the pipe.

i) Ejector valve setting is

incorrect (only pumps fitted

with ejector valve).

Set the valve. See section 5.2.

j) Direction of rotation is

incorrect (three-phase

pumps).

Interchange two phases.

3. The pump runs, but

gives no water or

delivers a reduced

quantity of water at

high pressure.

a) Discharge pipe blocked. Clean pipe or open isolating valves, if fitted.

Check that no additional work is being carried

out in the system.

English (GB)

* Or contact the nearest Grundfos company or service workshop.

11. Disposal

This product or parts of it must be disposed of in an

environmentally sound way:

1. Use the public or private waste collection service.

2. If this is not possible, contact the nearest

Grundfos company or service workshop.

Subject to alterations.

4. The motor cuts out

during operation.

a) Single-phase motors:

The thermal switch in the

motor has tripped due to

overheating.

The thermal switch will cut in automatically

when the motor has cooled sufficiently.

If the problem still persists, check these two

possible causes:

• Impeller stuck.

Clean the pump according to section 8.1.

• Motor defective.

Repair or replace the motor.*

b) Three-phase motors:

Motor-protective circuit

breaker has tripped.

Cut in the motor-protective circuit breaker.

If the problem still persists, check these two

possible causes:

• Impeller stuck.

Clean the pump according to section 8.1.

• Motor defective.

Repair or replace the motor.*

Fault Cause Remedy

Appendix

Appendix 1

Material variant A

Material variant B

TM04 2346 2308

Pump type Dimensions [mm]

ABC

JP 5, material variant A 300 364 240

JP 6, material variant A 300 401 240

TM04 2347 2308

Pump type Dimensions [mm]

ABC

JP 5, material variant B 306 364 240

JP 6, material variant B 306 401 240

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