Before you start the pump, you must perform these tasks:
•
Open the suction valve.
•
Open any recirculation or cooling lines.
1.
Fully close or partially open the discharge valve, depending on system conditions.
2.
Start the driver.
3.
Slowly open the discharge valve until the pump reaches the desired flow.
4.
Immediately check the pressure gauge to ensure that the pump quickly reaches the correct dis-
charge pressure.
5.
If the pump fails to reach the correct pressure, perform these steps:
a) Stop the driver.
b) Prime the pump again.
c)
Restart the driver.
6.
Monitor the pump while it is operating:
a) Check the pump for bearing temperature, excessive vibration, and noise.
b) If the pump exceeds normal levels, then shut down the pump immediately and correct the
problem.
A pump can exceed normal levels for several reasons. See Troubleshooting for information
about possible solutions to this problem.
7.
Repeat steps 5 and 6 until the pump runs properly.
5.10 Limits of operation
Flow limits
These flow limits are valid unless other data is available in the curves or data sheets:
Q
min
= 0.1 x Q
BEP
Short-term operation
Q
min
= 0.3 x Q
BEP
Continuous operation
Q
max
= 1.2 x Q
BEP
Short-term operation as long as NPSH
facility
>
NPSH
pump
+ 0.50 m | 1.64 ft
Permitted number of starts
Do not start the pump more than the number of times shown in this chart:
1
10
100
1
10
100
1000
Motor power [kW]
Maximum permitted
starts
per
hour
For pumps that use electric motors, do not start the motor more than the number of times listed in the
motor operation instructions. If two different numbers are shown, the lower number of starts is the
limit.
5.10 Limits of operation
60
Model IC, ICI, ICH, ICIH Installation, Operation, and Maintenance Manual
Содержание Goulds Pumps IC
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