Minimum continuous recommended flow – Goulds Pumps 3298 - IOM User Manual
Page 51
Commissioning, Startup, Operation, and Shutdown
CAUTION:
• Immediately observe the pressure gauges. If discharge pressure is not quickly attained, stop the
driver, reprime, and attempt to restart the pump.
• Observe the pump for vibration levels, bearing temperature, and excessive noise. If normal levels
are exceeded, shut down the pump and resolve the issue.
• On pure or purge-oil mist-lubricated units, remove the viewing port plugs to verify that oil mist
flowing properly. Replace the plugs.
• On frame mounted units, ensure that the oil level is correct prior to starting pump. Close coupled
pumps do not have oil lubricated bearings.
• Ensure all flush and cooling systems are operating correctly prior to starting pump.
• Continuous operation against a closed discharge valve will cause the pump to overheat.
Overheating the magnetic drive assembly will weaken or ruin the magnets.
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
discharge 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.
Minimum continuous recommended flow
Group
Pump size 60 Hertz
50 Hertz
GPM
m3/hr
3600
1800
1200
3000
1500
1000
3298
XS
1 x 1.5 - 5
1
0.5
—
0.2
0.1
—
1½ x 2 - 6
5
3
—
1
0.5
—
S
1 x 1.5 - 6
5
3
2
2
1
0.5
1 x 1.5 - 8
15
8
4
3
2
1
1½ x 3 - 7
20
10
6
5
2
1
2 x 3 - 6
30
15
8
6
3
1
M
1½ x 3 - 8
30
15
8
6
3
1
2 x 3 - 8
50
9
5
9
2
1
3 x 4 - 7
80
13
9
18
9
6
1 x 2 - 10
30
5
3
5
3
2
L
1½ x 3 - 10
60
30
20
11
5
4
2 x 3 - 10
100
50
33
19
10
6
3 x 4 - 10G
175
90
60
33
16
11
3 x 4 - 10H
-
90
30
—
17
3
4 x 6 - 10
-
475
5
325
5
—
95
5
55
5
SP3298
3298 Family Installation, Operation, and Maintenance Manual
49