Operation
Precautions
• Never operate the pump without safety devices installed.
• Never operate the pump with the discharge valve closed.
• Make sure that all safety guards are in place and secure.
• Make sure you have a clear path of retreat.
• Never work alone.
• Beware of the risk of a sudden start if the product is used with an automatic level control and/or
internal contactor.
Noise level
In certain installations and at certain operating points on the pump performance curve, the noise level can
be greater than 70 dB.
Pumps with power output greater than 30 kW, as shown in the diagram below, may have a noise level
between 70 dB and maximum 85 dB at the best efficiency point.
dB(A)
kW
80
90
85
75
70
65
60
55
50
10
1000
100
Figure 41: Sound pressure
Start the pump
WARNING:
• Make sure that the pump cannot roll or fall over and injure people or damage property.
• Make sure nobody is close to the pump when it is started. The pump will jerk in the opposite
direction of the impeller rotation.
1. Check that:
a) The monitoring equipment works.
b) The starter equipment is installed according to the manufacturer’s instructions.
c) All the alarms are functioning.
d) The oil is at the correct level in the oil housing.
2. Remove the fuses or open the circuit breaker, and check that the impeller can be rotated freely.
Make sure the locking device has been removed. See
(page 45).
Make sure that the propeller rotates in the correct direction. See
(page 77).
3. Conduct insulation test phase to ground. To pass, value must exceed 5 Megohms.
4. Start the pump.
Operation
C3300/6x5, C/R3231, C3240, C3306, C3312, C3351, C3356, C3400, C3501, C3531, C3602, C3800 Installation,
Operation and Maintenance Manual
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