Watts BA BM Manual De Instalación Y Funcionamiento página 7

EN
3.4 Repair kits
Repair kits are available and make it possible to replace the specific defective part on the BA backflow preventer
Backfl ow
DN D
preventer
part no
mm ''
2231150 15 1/2
2231250 20 3/4
2231350 25 1
2231450 32 1 1/4
2231550 40 1 1/2
2231650 50 2
Spare part kit :
A - First check module :
O'ring + O'ring for
cover + 4 cover screw
B - Second check module :
for cover + 4 cover screw
C - Relief valve module :
O'ring + one M10
screw for an easy remove of the relief valve module
+ O'ring for cover + 4 cover screws
Backfl ow
DN
preventer
part no
mm Kit A
2231150 15
22416020377 22416020393 22416020359 22416020333 22416020310 22416020315
2231250 20
2231350 25
22416030377 22416032393 22416032359 22416020333 22416032310 22416032315
2231450 32
2231550 40
22416050377 22416050393 22416050359 22416020333 22416050310 22416050315
2231650 50
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 fl ow
or no fl ow)
V L1 L2 H1 H2
mm mm mm mm mm
32 122 201 168,5 103
32 122 201 168,5 103
40 157 252 238 156
40 157 252 238 156
50 220 336 303,5 202,5
50 220 336 303,5 202,5
E - Test cock
F - Air gap kit
O'ring + O'ring
G - Relief valve body kit
H - Sockets and seals kit
Spare part references
Kit B Kit C Kit E
POSSIBLE CAUSE
Pressure fl uctuation 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
H3 W L
mm mm Kg
65,5 53 1,2
65,5 53 1,2
82 76 2,7
82 76 2,7
101 115 6,5
101 115 6,5
Kit F Kit G Kit H
2236704
2236705
2236706
2236707
2236708
2236709
L1
L2
A
E
H
G
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
L1
L2
E
B
C
E
H
F
7