Wilo FLA Série Notice De Montage Et De Mise En Service page 34

English
Captions
Fig. 1a Example of FLA-1HELIX V.....
Fig. 1b Example of FLA-2HELIX V.....
1 Pump
2 Control device
3 Base frame
4 Inlet connection/inlet collecting pipe
5 Pressure connection/pressure collecting pipe
6 Check valve
7 Non-return valve
8 Diaphragm pressure vessel
9 Pressure gauge
10 Standkonsole
11 Needle-type throttle
12 Pressure switch
12A Pressure switch 1
12B Pressure switch 2
12C Pressure switch 3
13 Draining/venting
14 Throughflow fitting/check valve
15 Bypass connection (on the pressure side)
Fig. 2a FLA-1 pressure switch and diaphragm
pressure vessel kit
5 Pressure connection/pressure collecting pipe
8 Diaphragm pressure vessel
9 Pressure gauge
12 Pressure switch
13 Draining/venting
14 Throughflow fitting/check valve
16 Stop valve
24
Fig. 2b FLA-2 pressure switch and diaphragm
pressure vessel kit
5 Pressure connection/pressure collecting pipe
8 Diaphragm pressure vessel
9 Pressure gauge
12A Pressure switch
12B Pressure switch 2
12C Pressure switch 3
13 Draining/venting
14 Throughflow fitting/check valve
16 Stop valve
Fig. 3 Pressure switch, type FF (change over
contact)
Adjusting screw for deactivation pressure
19
(upper switching point)
20 Adjusting screw for differential pressure
(lower switching point)
21 Earth connection (PE)
22 Terminal block/contacts
24 Scale for switch-off pressure
25 Scale for differential pressure
Fig. 4 Operation of throughflow fitting/pressure
test Diaphragm pressure vessel
A Opening/closing
B Drain
C Checking the supply pressure
Fig. 5 Reference table for nitrogen pressure
Diaphragm pressure vessel (example)
a Nitrogen pressure according to the table
b Switch-on pressure, base-load pump, in bar
PE
c Nitrogen pressure in bar PN2
d Nitrogen measurement without water
e Important! Introduce nitrogen only
WILO SE 08/2019