Honeywell BCU 370 - Page 31

BCU 370 · Edition 01.19 31
Function
Leakage is indicated by
36
for the
first valve and
37
for the second.
V1 V2
p
u
p
z
START
t
W
p
Z
>
p
u
2
t
L
= 3 s
t
M
+
–
+
–
t
L
= 3 s
t
M
p
Z
>
p
u
2
+
–
TEST
V2
I ➔ 0
V2
V2
OK
V2
0 ➔ I
p
Z
>
p
u
2
V1
OK
V1 V2
OK
V1
I ➔ 0
V1
0 ➔ I
V1
OK