BARTEC BENKE HYGROPHIL H 4230-12 Ex Zone II Operating Instructions Manual page 94

Error and warning messages
88
Message
FLOW MIN !!
FLOW TOO HIGH !!
FLOW MAX !!
TT TOO LOW !!
TT TOO HIGH !!
OUTRANGE T1 ext !!
OUTRANGE T int !!
Relay Causes
Error relay Although the proportional valve is
fully open, too little air is being
pumped through the measuring
chamber.
(„open error" see section 8.3.1
DaAdr$0A, Bit 8 and Bit 16)
Warning relay The air flow rate is currently too
high (P>650 Pa).
The proportional valve closes.
Error relay Although the proportional valve is
fully closed, too much air is being
pumped through the measuring
chamber.
(„close error" see section 8.3.1
DaAdr$0A, Bit 9 and Bit 17)
Error relay The gas sampling hose tempera-
ture is temporary too low.
Error relay The gas sampling hose tempera-
ture is temporary too high.
Warning relay The external measured tempera-
ture T1
external
higher than 200 °C".
Warning relay The internal measured tempera-
ture T
internal
higher than 100 °C".
Operating Instructions HYGROPHIL® H 4230-12 BA 060207
is lower than 0 °C or
is lower than 0 °C or
Actions
Upon start-up:
 Increase admission pressure at
the reducing valve (up to a max-
imum of 5 bar)
 Check the negative pressure at
the extraction point; operation is
no longer possible at a vacuum
pressure of < -250 hPa
During measurement operation:
 Check the compressed air sup-
ply
 Clean the filter
 Check whether the suction line
is blocked
 Check the measuring chamber
and clean if necessary
 Check all hose connections
 Check the ejector; air must be
free to leave at the ejector outlet
 If there is a discharge duct,
check whether it is clear
Wait until the end of the control
process
If the control range is insufficient,
the message FLOW MAX !! is out-
put
Upon start-up:
 Pressure at the extraction point
too high; operation is not possi-
ble without special measures
 Select a different extraction
point, e.g. change from the
pressure side to the suction side
for blowers
 Take suitable throttling
measures, taking into account
the risk of dirt at the throttling
point
During measurement operation:
 Clean the venturi nozzle
 Check the connecting hoses
 Have the service centre check
the pressure pick-up
 wait till the regular operating
conditions appear
 wait till the regular operating
conditions appear
 Check ambient conditions.
 Check the sensor and its con-
nection for short circuit or inter-
ruption.
 Check the sensor and its con-
nection for short circuit or inter-
ruption