Troubleshooting - Socla BA 4760 Manuel D'installation Et D'utilisation

Modules
Items
/ kits
5-6-7-10-12-
A
13-14-15-22
Upstream check valve and retainer
First check valve module
B
8-9
Downstream check valve and retainer
Second check valve module
C
11-9
Draining valve assembly, head, seat and
Complete cover module
15-16-18-19-
D
Cover, draining valve seat, cover, test
20-21
E
2-3-4
F Kit 3 Test cocks with caps
18-21
5-6-7-8-9-10-
A+B+C
11-12-13-14-
15-22
* For former BA4760 DN65 Nr 149B3096, serie Nr J01000, please refer to DN 80.

4. Troubleshooting

PROBLEM
1. Rapid discharge of water through the
relief valve followed by normal operation
2. Continuous discharge of water
through the relief valve in the course of
normal operation
3. Continuous discharge of water
through the relief valve in safe mode
(normal flow or no flow)
8
D
B
E
Repair kits for BA4760 backflow preventer
DN DN65 *
Ref BA 4760 149B3486
"I 01000
Serial number
SI 000000"
Relief valve module
149B055379 149B055380
149B055301 149B055370
149B055374 149B055375
cover, membrane, seals
149B055305 149B055384
cocks and screws
Drain kit
Funnel and screws
149B19
Complete kit
Pressure fluctuation in the upstream water supply
network
The relief valve is dirty or damaged
a. The upstream valve is dirty or damaged
b. The piston seal of the relief valve is dirty or damaged
c. The downstream valve is dirty or damaged
A
DN80 DN100
149B3097 149B3098
"K 01000 "L 01000
SK 000000" SL 000000"
149B055381
149B055371
149B055376
149B055386
149B055389
149B20 149B21
POSSIBLE CAUSE
F
C
DN150 DN200
149B3400 149B3401
"M 01000 "N 01000
SM 000000" SN 000000"
149B055382
149B055372
149B055377
149B055387
149B055406
149B055410
149F017922
ACTION
None
Clean or replace the relief valve module
a. Clean or replace the upstream valve
b. Clean or replace the relief valve module
c. Clean or replace the downstream valve
EN
DN250
149B3402
"P 01000
SP 000000"
149B055383
149B055373
149B055378
149B055388
149B25