29
When the alarm is repeated, it should be serviced immediately – and not postponed
further.
3.4.2
To Service the unit:
Press the reset button:
This will cause the appropriate LED to change to constant “amber”, the external alarm to be
reset.
Press the service button again:
(this should be within ten seconds of the first push).
This will cause a manual drain to be implemented. Once the drain is complete,
Isolate the electrical supply:
Inspect the cylinder:
As described in the maintenance section of the operating and
maintenance manual.
Clean/Replace the cylinder:
As described in the maintenance section of the operating and
maintenance manual.
Power up the unit:
Press the reset button:
This will cause the appropriate cylinder LED will change to constant “amber” and the external
alarm will be reset, allowing the unit to continue to run without an external alarm.
a) Service Interval Expired:
If the original alarm was due to this, the alarm will be
reinstated after the unit has run for a further 120 hours.
b) Low output:
If the original alarm was due to this, the low output timer will be
reset and a new alarm will be generated if the unit fails to exceed 60% of the
demand current after a further four hours run time.
Press the reset button again:
(this should be within ten seconds of the first push).
This will reset all the relevant timers including the hours run timer.
NB if the button is not pressed a second time then the alarm will only be postponed,
and will quickly return.
5
Event in Progress:
This is a transitional state while the unit is actually performing a
particular routine. The LED indication is for information only and requires no user
intervention.
6
Event Completed:
If one of the above conditions have been implemented, when it has been
completed, the unit by default will continue to run, however it is possible to change this to
“stop” (via a display either fitted or hand held) if this is the case this condition will be
exhibited, and the unit will not run until the condition has been reset, by either:
i) Units fitted with an Alpha-numeric display:
Power the unit right off, using the local
isolator (not the unit on/off switch), waiting ten seconds then re-applying power. When the
message “event complete” is once again displayed press the o.k. button, and the unit will
revert back to it’s operational state.
ii) Units not fitted with a display:
Power the unit right off, using the local isolator (not the
unit on/off switch), waiting ten seconds then re-applying power. When the constant green
“event complete” indication is showing, press the unit “fault reset” button.
7
Constant output:
i) Units fitted with an Alpha-numeric display:
This is another transitional state, and once
the “constant output period” has expired, the unit will revert to normal “controlled” operation.
The LED indication will automatically revert to the cylinder’s “current state”.
ii) Units not fitted with a display:
Once the testing of the unit is complete, the jumper J1
on the configuration PCB should be removed from the full output position and returned to its
normal operating position.
8
No voltage input:
Check the wiring to CR6 of the “level sense” daughter board (part number
1150633). If the line voltage can be measured here, check the wiring between CR1 pins 5 &
6, of the same daughter board and CR2 pins 13 & 14 of the main control PCB. If this is also
correct then either the daughter board or the main control PCB is faulty. Once the fault has
been cleared the LED indications will revert back to the cylinders “current state”.
