8.
Adjust the required setpoint pressure by using the
Up
or
Down
arrows on the operating panel. Choose one of the pumps for the setpoint
setting. The pumps communicate, so it makes no difference which pump you use. Monitor the system pressure on the pressure gauge
If you change the outlet pressure, you must adjust the precharge pressure in the diaphragm tank accordingly.
9.
The booster system is now in automatic mode and ready for operation.
5.5 Shaft seal run-in
The shaft seal faces are lubricated by the pumped liquid. A slight leakage from the shaft seal of up to 10 ml per day or 8 to 10 drops per hour
may occur. Under normal conditions, the leaking liquid will evaporate. As a result, no leakage will be detected.
When the pump is started for the first time, or when the shaft seal has been replaced, a certain run-in period is required before the leakage is
reduced to an acceptable level. The time required for this depends on the operating conditions, that is, every time the operating conditions
change, a new run-in period will be started.
Leaking liquid will drain through the drain holes in the motor flange.
Install the product in such a way that leakage cannot cause undesirable collateral damage.
6. Product introduction
6.1 Product description
Grundfos CMBE TWIN booster is suitable for clean water supply and pressure boosting in domestic and commercial applications. The booster
system maintains a constant pressure in the pipe system. The CMBE TWIN booster system consists of two CMBE boosters that operate in
parallel. Each CMBE booster includes a Grundfos CME booster with an integrated frequency drive.
The two CMBE boosters are mounted on a common base plate. Each booster is delivered complete with 5-way fittings, non-return valves,
diaphragm tank, pressure sensor and pressure gauge.
4
5
6
7
1
2
3
8
TM071353
Fig.
CMBE TWIN booster with accessories
Pos.
Description
1
Diaphragm tank
2
Pressure sensor
3
5-way fitting with integrated non-return valve
4
CME pump
5
Base plate
6
Pressure gauge
7
Vibration dampers (accessory)
8
Inlet/outlet pipes with ball valves and unions (accessory)
6.2 Intended use
This product has been evaluated for use with clean water only.
Only use the product according to the specifications stated in these installation and operating instructions.
The CMBE TWIN booster system keeps a constant pressure in variable-demand systems and is designed for pressure boosting of clean water
in domestic and commercial applications.
18
English (GB)
