Technical Manual WD 230 and WD 250
Rev. 1.8 PF
Page 49
73018_E rev 1 8-Technical Manual.doc
1 - 20 Min., Default = 7 Min.
7
Minutes
146
Working level with preheated DI water (M9) from boiler is not attained during fill
process.
If during intake process of preheated DI water (drain pump M32), the operating
level 2 is not attained within a predetermined period of time tvew (3 min.), the
control system will interrupt the current process and display error.
Monitoring of limit value: as under 141
Cause: Remedy:
Using control (key 3), activate K 41
Relay K 14 is defective
replace
Feed pump M 14 is defective
repair / exchange
Level system leaks
check hoses
No DI water
Error code 146
14
6
Adjustment of limit value
for preheated DI water intake tvew.
1 - 15 min., Default = 3 min.
DI water boiler
3
Minutes
14
7
The max overflow level has been reached.
If for more than seconds, the overflow level of level sensor (P1) has been ex-
ceeded, the control system will interrupt the current process and display error.
(See chapter 6 Wash Chamber Level).
Limit value P
u static
= 3.2 V (without wash pump M 15)
Limit value P
u dynamic
= P
u static
– 1.3 V (with running wash pump)
Cause: Remedy:
Wash pump M 16 is deductive
Check Contact K16 or wiring connec-
tion
Pressure switch S211 stays always open Check plugs and wiring
Water valve doe not close properly
replace valves
Overflow level
Error code 147
14
8
Fill level monitoring recognizes no level change during drainage of wash
chamber.
If during the wash chamber drain process with drain valve Y31 or drain pump,
the level has not dropped to 0.7 V (empty level + 0.2 V) within a predetermined
period of time, the control system will interrupt the current process and display
error.
Monitoring of limit value: only during drain process until empty level is attained.
Cause: The drain is plugged or drain pump is broken.
The wash pump contact K 15 stays stuck closed
If during the draining process (Y31 is activated) the pressure switch S211 is still
closed, the control will interrupt the current process and display error.
Monitoring of limit value: 5 sec. after and during drain process (5. Sec after Y31
is activated).
Cause:
Remedy:
Pressure switch S211 stays always closed replace Pressure switch S211
Activate Y 31 (key 3)
Wire break from CPU to valve
No drainage
Error code 148
