93-340-74 Issue 5 CirrusPro Locator Operating Manual Page 11 of 12
7.6
Buzzer Enable Or Disable
•
Enter the ‘Engineer menu’. (Section 7.5)
•
Press the ‘increase sensitively’ button to enter menu.
The LCD will show:
•
SELECT
either buzzer
ON
or
OFF
by toggling the ‘increase sensitively’ button.
•
STORE
the chosen option be pressing ‘decrease sensitively’ button that in turn exits back to
the ‘Engineer menu’.
8.0 Faults
•
No Water
The unit is out of water.
Check water supply and refill. Force a fill by pressing the hardware reset button. A fill will
occur within 2 minutes. Water should seen to be taken from the bottle.
If water is not taken then the water fill path could be blocked or the valve has failed, in which
case replace the cloud chamber.
•
EEPROM Corrupt
The internal program memory (eeprom) does internal tests. This could be due to an error
during saving data. Re commissioning the unit and saving the settings should clear this error.
If the error persists then replace the geartray assembly.
•
Processor Fault
This is indicated if a problem has been detected with micro controller or the Read Only
Memory (ROM). This is a serious failure and usually requires a replacement geartray
assembly.
•
Seal Fault
The chamber is tested for ‘leaks’ during the power up tests. This fault does not necessarily
stop the unit functioning, but it must be attended to before complete failure occurs.
Check LED/Photodiode screws/seal. Tighten the six chamber screws slightly and check the
thermistor seal.
If fault persists, replace cloud chamber.
•
Vacuum Fault
The unit has detected that the vacuum is insufficient to form a cloud (<5.7psi). Check
connections to the pump, the pump operation and the pipe to sensor on the PCB and from the
pump to the cloud chamber.
If the fault remains, check that pump armature is parallel with the pump body, if not, adjust it
down. Change the pump if required.
•
Serial Fault
Check the connection between the processor board (WEFA321) and the display control board
(WEFA390). If the fault still occurs, replace either of the boards to determine which one has
the fault.
