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Troubleshooting / Technical data
Wiring scheme / Terminal connections
20
21
Troubleshooting
Repair work must only be carried out by WTW service or by
service people authorized by WTW.
Before repairing disconnect mains plug.
Error
Cause
Error elimination
Illumination and display
are dark
Mains fuse
Main instrument fuse
Check and possibly
replace fuse
see technical data
Illumination dark
Ring lamp defective
Replace ring lamp
Display is illuminated
Elektronic choke
defective
WTW service
Illumination and display on
but counting impossible
Control unit defective
WTW service
Pressure on counting disk
is different
Sensor defective
WTW service
Double counting
Sensitivity too high
Adjust sensitivity
Technical data
Type 230 V
Type 115 V
Mains voltage
230 V
±
15 %, 50-60 Hz
115 V
±
15 %, 50-60 Hz
Connected load
21 W
21 W
Fuse protection
Fine-wire fuse 200 mA
(
∅
5 x 20 mm)
Fine-wire fuse 400 mA
(
∅
5 x 20 mm)
Dimensions
B x T x H 300 x 325 x 90 mm
Weight
5.6 kg
Control unit
Illumination
Sensor
Mains filter
L
E
N
Sensor
Choke
Sensor
L
E
N
E = GROUND (COLOR = GREEN-YELLOW)
CONTACT PIN
CONNECTION
RESET
BROWN
BLUE
BLACK
BLACK
WHITE
WHITE