Grundfos BMS Series - BMS Hs and BMS Xl Pumps

7.2 BMS hs and BMS xl pumps
7.2.1 Before startup
Follow these instructions to ensure correct startup of the BMS
hs and BMS xl pumps.
WARNING
Description of hazard
Death or serious personal injury
‐ Make sure that the pump and the system are fully
vented before startup.
For type, amount and interval of greasing, see the
nameplate on the motor.
Check that the power supply is according to the nameplate.
Using a sine-wave filter is strongly recommended to avoid
overheating and potential damage to the product.
1
2
3
4
5
6
7
8
9
11
12
10
A
TM061077
Example of a BMS hs pump
Pos. Description
A Built-in non-return valve
1 Raw-water feed pump
2 Pressure gauge (raw water)
3 Filter
4 Low-pressure switch
5 Flowmeter
6 BMS hs pump with built-in non-return valve
7 High-pressure switch
8 Pressure gauge (BMS hs outlet pressure)
9 Vent
10 Pressure-relief valve
11 Pressure gauge (fresh-water pump)
12 Fresh-water flush pump
2)
A fresh-water flush pump must be installed in systems for seawater
desalination or similar systems.
Related information
6.1 Output filters
7.2.2
Startup
If an outlet valve is installed, we recommend that you open the
valve 1/4 of a turn when starting the pump or system.
Do not operate pumps against a closed valve.
To start up a BMS hs or BMS xl pump, proceed as follows:
1. Start the feed pump (1), and check that the inlet pressure (2) of
the pump (6) is higher than 1.0 bar and lower than 35.0
bar. Note that this limitation is only for the startup phase. Once
the pump is running, the maximum inlet pressure can be higher.
See the pump specific values in the section on product range.
2. Vent the pump (6).
3. Start the pump (6). Ramp up the pump (6) according to factory
settings. See the figure below (1 and 2).
Ramp up from 0 to 1700 rpm within three seconds.
2
3
1
4
rpm
1700
3s
t[s]
TM061079
Ramping up, BMS hs or BMS xl
Ramp-up time:
• Ramp-up: from 0 to 1700 rpm, maximum 3 seconds.
• Ramp-up: from 1700 rpm to maximum speed, to be
configured by the customer.
• Ramp-down: from maximum speed to 1700 rpm, to be
configured by the customer.
• Ramp-down: from 1700 to 0 rpm, maximum 3 seconds.
4. Set the outlet pressure of the pump (8) to the desired value.
5. Check that the inlet pressure (2) of the pump is higher than 1.0
bar and lower than 35.0 bar. Note that this limitation is only for
the startup phase. Once the pump is running, the maximum inlet
pressure can be higher. See the pump specific values in the
section on product range.
Make sure that the pump is protected against dry running.
Do not touch electrical connections if the pump has
reverse flow.
Related information
7.2.1 Before startup
13.1.1 BMS hs PM booster system
13
English (GB)