Fault diagnosis for
Fault 14: No feed water
#3/4
yes
no
Only a
quiet hum
Malfunction in unit – correction by Technical Service staff
⇒
Check the float switch for demineralized water
(
04-01
) at
DIN 6
:
•
Check “E6: Aqua dem, swimmer” in the digital
inputs of the
Diagnosis Program
.
•
Lift the float of the switch
Î
display “closed”
(enough water)
•
Press down the float of the switch
Î
display
“open” (not enough water)
•
If necessary, replace the float switches. Or turn
them 180° if they have been incorrectly installed.
Or, repair the cable connection.
⇒
Check the signal processing at
DIN 6
of the
main circuit board
08-00
:
•
Check “E6: Aqua dem, swimmer” in the digital
inputs of the
Diagnosis Program
.
•
Pull out the plug of the digital inputs on the main
circuit board
08-00
, and directly jumper
DIN 6
.
•
If defective, replace the main circuit board
08-
00
.
WARNING!
Water supply
---------------------
aqua dest. / dem.
Check supply
---------------------
(Malfunction 14)
WARNING!
Water supply
---------------------
aqua dest. / dem.
refill!
---------------------
(Warning message)
Can you hear the feed pump when
the program starts?
⇒
Check the activation control for the feed-water
pump and the valve
33-00
through
AC OUT 5
:
•
Switch on “A5: Pump/SV aqua dem” in the digital
outputs of the
Diagnosis Program
.
•
Check the electrical activation control (the LED
assigned to the output will light up), fuse
F3
, and
the switching behaviour of the pump and the
valve.
•
If necessary, measure the voltage again at
AC OUT 5
of the main circuit board
08-00
, and for
the pump and valve (approx. 230 V AC).
•
If necessary, replace a defective feed-water
dosing unit
33-00
, or replace the main circuit
board
08-00
or repair a defective cable
⇒
Solenoid valve
33-02
of the feed-water dosing unit does not open.
•
Clean the solenoid valve (plunger) and check the coil, or replace the feed-water dosing unit
33-00
.
⇒
The nozzle (flow limiter)
33-03
of the feed-water dosing unit
33-00
is clogged.
•
Clean the dirty nozzle, or replace the feed-water dosing unit
33-00
.
09/21/2006
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Servicemanual DAC Professional
Summary of Contents for DAC PROFESSIONAL
Page 1: ...b a PROFESSIONAL p j...
Page 7: ...Figure 4 Back view 09 21 2006 5 61 Servicemanual DAC Professional...
Page 56: ...Sirona DAC Professional Process 09 21 2006 54 61 Servicemanual DAC Professional...
Page 60: ...Valve diagram 09 21 2006 58 61 Servicemanual DAC Professional...
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