Troubleshooting Table - Xylem Lowara 1HM02P Manuel D'installation, D'utilisation Et D'entretien

Table des Matières

Les langues disponibles

en - Original instructions

• Never operate the pump below the minimum rat-

ed flow.

• Never operate the pump with the delivery ON-

OFF valve closed for longer than a few seconds.

• Do not expose an idle pump to freezing condi-

tions. Drain all liquid that is inside the pump. Fail-

ure to do so can cause liquid to freeze and dam-

age the pump.

• The sum of the pressure on the suction side (wa-

ter mains, gravity tank) and the maximum pres-

sure that is delivered by the pump must not ex-

ceed the maximum working pressure that is al-

lowed (nominal pressure PN) for the pump.

• Do not use the pump if cavitation occurs. Cavita-

tion can damage the internal components.

Noise level

The sound pressure level of the units is lower than

70 LpA.

5.1 Prime the pump

For an illustration that shows the pump parts, see

Figure 6

(page 173).

1. Fill plug

2. Drain plug

3. Funnel

Installations with liquid level above the pump

(suction head)

1. Close the on-off valve located downstream from

the pump.

2. Remove the fill plug and open the on-off valve

upstream until the water flows out of the hole.

3. Close the fill plug.

Installations with liquid level below the pump

(suction lift)

1. Open the on-off valve that is located upstream

from the pump and close the on-off valve down-

stream.

2. Remove the fill plug and use a funnel to fill the

pump until water flows out of the hole.

3. Replace the fill plug.

5.2 Check the rotation direction (three-

phase motor)

Follow this procedure before start-up.

1. Locate the arrows on the pump or the motor fan

cover to determine the correct rotation direction.

2. Start the motor.

3. Quickly check the direction of rotation through

the motor fan cover.

4. Stop the motor.

5. If the rotation direction is incorrect, then do as

follows:

a) Disconnect the power supply.

b) In the terminal board of the motor or in the elec-

tric control panel, exchange the position of two

of the three wires of the supply cable.

c) Check the direction of rotation again.

5.3 Start the pump

1. Start the motor.

2. Gradually open the on-off valve on the dis-

charge side of the pump.

At the expected operating conditions, the pump

must run smoothly and quietly. If not, refer to

Troubleshooting

(page 12).

3. If the pump does not start in correctly in 30 sec-

onds, then do the following:

a) Switch off the pump.

b) Reprime the pump.

c) Start the pump again.

4. Switch off and on the pump (for about 30 sec-

onds of continuos running) and make sure that

all the trapped air is bled out by repeating this

2–3 times.

NOTICE:

Make sure that the pump has bled away all the trap-

ped air. Failure to do so can harm the product.

6 Maintenance

Precautions

Electrical Hazard:

Disconnect and lock out electrical power

before installing or servicing the unit.

WARNING:

• Maintenance and service must be

performed by skilled and qualified

personnel only.

• Observe accident prevention regula-

tions in force.

• Use suitable equipment and protec-

tion.

6.1 Service

The pump does not require any scheduled routine

maintenance. If the user wishes to schedule regular

maintenance deadlines, they are dependent on the

type of pumped liquid and on the operating condi-

tions of the pump.

Contact the local sales and service representative

for any requests or information regarding routine

maintenance or service.

Extraordinary maintenance may be necessary to

clean the liquid end and/or replace worn parts.

7 Troubleshooting

Introduction

Always specify the exact pump type and identifica-

tion code when requesting information or spare parts

from the Sales and Service department.

For other situation not mentioned in the table, refer

to the Sales and Service department.