24
Fan
This enables the temperature to which the unit is controlled to
be changed. The majority of BWB Flame Photometers will
leave the factory with the Fan option set to 32. This is to
ensure the instrument electronics maintain a constant
temperature to maximise stability. This option has a minimum
setting of 0 and a maximum setting of 50. It has been
determined that in an ambient temperature of 20-25°C; 32
will provide the best degree of stability, however if the
ambient temperature is routinely higher than 25˚C an
alternative setting may be more effective. Consult your local
agent or BWB for advice.
Pressing numeric key 4 will cycle the setting from 20˚C
through to 50˚C.
NOTE: This setting should not be altered unless the instrument
is being used in abnormal ambient temperatures. Consult your
local agent or BWB for advice.
The maintenance menu
Once the Security Code is entered the instrument will remain in
Service Mode until powered down or an attempt to enter the
incorrect code is made.
Precautions should be taken to avoid non-authorised personnel
gaining access to basic calibration or other service parameters if the
instrument is left switched on and unattended.
To remove the Service Code from the system without shutting it
down, navigate to the Show Info screen and type any key combination
(any length) that is not in the Service Code. Use back/STOP and accept
to navigate out and back in to the screen to confirm the code has been
deactivated.
Press the back/STOP key to return to the Maintenance menu.
1>Run Compressor
2 Show Info
3 Flame Detect =80
4 Fan Temp =32
FDet (Flame Detection)
The flame detection option alters the sensitivity of the flame detector. The
instrument will leave the factory with the optimum value pre-set. This
varies from unit to unit but is generally either 80 or 60.
If problems are encountered whereby the flame extinguishes unexpectedly
and the gas supply and connections are known to be in good condition, the
sensitivity of the Flame Detector may be set too high. Pressing numeric key
3 will cycle the setting from 20 through to 200. If it is set to 60 adjust to 80,
conversely, if set to 80 adjust to 60. Other settings may also prove effective
at dealing with this problem
To Next Page
