Monitoring Of Oil Lubrication System; Before Starting The Booster Module; Startup; Bme - Grundfos BME Montage- Und Betriebsanleitung

6.4 Monitoring of oil lubrication system

The oil lubrication system is monitored by a level switch
positioned as shown in fig. 10. The electrical connection to 0-250
V (with a maximum 10 A back-up fuse) is made in the terminal
box.
During periods of inactivity, the oil container may
Note
be empty. Check the oil level after 5 minutes of
operation. If necessary, refill the oil container.
Level switch
Max. oil level
Min. oil level
Terminal box
Fig. 10 Oil lubrication system

7. Before starting the booster module

Check the following:
1. Oil level. See section 6.4 Monitoring of oil lubrication
2. Belt tension. See section 13. V-belt
3. Greasing. See section 17. Motor
4. Power supply in accordance with nameplate.
5. Free movability.
Rotate the motor and pump shafts manually by means of the
V-belt.
6. Pipework according to the diagrams in figs
7. Slacken the foundation bolt nuts.
8. BMET: Free discharge for the concentrate.
Connection of concentrate hose. See fig. 4.
8
system.
tension.
bearings.
11 and 12.

8. Startup

We recommend that you open the discharge valve 1/4 when
starting the booster module.

8.1 BME

To start up a BME booster module, proceed as follows:
1. Start the feed pump and check that the inlet pressure of the
booster module is higher than 1.0 bar (10 metres head) and
lower than 30.0 bar (300 metres head).
2. Vent the booster module. See section
and checking of direction of
3. Start the high-pressure pump.
Check that the oil level in the oil container stabilises between
minimum and maximum.
4. Check the direction of rotation as described in section
9. Liquid filling, venting and checking of direction of
5. Set the discharge pressure of the booster module to the
desired value.
6. Check that the inlet pressure of the booster module is higher
than 1.0 bar (10 metres head) and lower than 30.0 bar (300
metres head).
The booster module is now ready for operation.
Air escape valve
High-pressure pump
Low-pressure
switch
Feed pump
Raw-water
supply
Fig. 11 BME booster system
9. Liquid filling, venting
rotation.
rotation.
High-pressure switch
RO filter
Permeate
Pressure
regulating
valve
Concentrate
(brine)