
VACUUM LEAK DETECTOR
VLR ..
and
VLR .. MV
20/05/2020
- 24 -
5.6.3 Block diagram (SL 854 851)
44 Solenoid
valve
60
Pump (24 V DC)
76 Main
board
90 Temperature
switch
91 Heating
97
Leak detection probe
102 Pressure
sensor
103 Display
128 Switching
power
supply
139 Keypad
146
Solenoid valve monitoring board (MVÜ board)
169
Data bus module (DBM)
Mounting
5
4
3
2
1
6
PE
N
L
+24
40
8
71
70
40
41
7
3
41
+24
gnd
5
22
21
13
6
12
4
+5V
+5V
1
100 - 240 V AC
50 Hz L
18
10
9
19
N
PE
24 V DC
2
SDR
17
11
-
+
102
146
128
60
91
90
76
44
97
P
24 VDC
139
169
103