Xylem GOULDS 2GFK2412H, Installation, Operation And Maintenance Manual

Page: 16 / 24

4.3 Check the impeller rotation
CAUTION: Crush Hazard
The starting jerk can be powerful. Make sure nobody is close
to the unit when it is started.
1. Start the motor.
2. Stop the motor after a few seconds.
3. Check that the impeller rotates according to this illustration.
WS006253B
The correct direction of impeller rotation is clockwise when you
look at the pump from above.
4. If the impeller rotates in the wrong direction, then do one of these
steps:
– If the motor has a 1-phase connection, then contact a sales or
authorized service representative.
– If the motor has a 3-phase connection, then transpose two phase
leads and do this procedure again.
5 Operation
5.1 Precautions
Before taking the unit into operation, check the following:
• All recommended safety devices are installed.
• The cable and cable entry have not been damaged.
• All debris and waste material has been removed.
NOTICE:
Never operate the pump with the discharge line blocked, or the dis-
charge valve closed.
WARNING: Crush Hazard
Risk of automatic restart.
Distance to wet areas
WARNING: Electrical Hazard
Risk of electrical shock or burn. You must connect an addi-
tional ground- (earth-) fault protection device to the ground-
ed (earthed) connectors if persons are likely to come into
contact with liquids that are also in contact with the pump or
pumped liquid.
CAUTION: Electrical Hazard
Risk of electrical shock or burn. The equipment manufacturer
has not evaluated this unit for use in swimming pools. If used
in connection with swimming pools then special safety regu-
lations apply.
Noise level
NOTICE:
The sound power level of the product is lower than 70 dB(A). However,
in some installations the resulting sound pressure level may exceed 70
dB(A) at certain operating points on the performance curve. Make sure
that you understand the noise level requirements in the environment
where the product is installed. Failure to do so may result in hearing
loss or violation of local laws.
5.2 Start the pump
CAUTION: Crush Hazard
The starting jerk can be powerful. Make sure nobody is close
to the unit when it is started.
NOTICE:
Make sure that the rotation of the impeller is correct. For more informa-
tion, see Check the impeller rotation.
1. Check the coolant level in the oil housing.
2. Remove the fuses or open the circuit breaker, and check that the
impeller can rotate freely.
WARNING: Crush Hazard
Never put your hand into the pump housing.
3. Conduct insulation test phase to ground. To pass, the value must
exceed 5 megaohms.
4. Start the pump.
6 Maintenance
6.1 Precautions
Before starting work, make sure that the safety instructions in the chap-
ter Introduction and Safety on page 3 have been read and understood.
DANGER: Crush Hazard
Moving parts can entangle or crush. Always disconnect and
lock out power before servicing to prevent unexpected start-
up. Failure to do so could result in death or serious injury.
DANGER: Inhalation Hazard
Before entering the work area, make sure that the atmos-
phere contains sufficient oxygen and no toxic gases.
WARNING: Biological Hazard
Infection risk. Rinse the unit thoroughly with clean water be-
fore working on it.
CAUTION: Crush Hazard
Make sure that the unit cannot roll or fall over and injure peo-
ple or damage property.
Make sure that you follow these requirements:
• Check the explosion risk before you weld or use electrical hand
tools.
• Allow all system and pump components to cool before you handle
them.
• Make sure that the product and its components have been thor-
oughly cleaned.
5 Operation
1310 Installation, Operation, and Maintenance Manual 13