10
Power Up Guide
For the first time, or after an extended period of being disconnected from the main supply, the
unit should be left powered on whilst the internal
‘
dryfit
’
battery and Envitec batteries are charged
up
-
ideally overnight. However, we recommend that the unit is left on permanently.
The Envitec screen will display an animated battery charging symbol (See Fig 1).
Once charged the animated battery symbol will become static and the Envitec unit can be
switched on (Press On button
-
See Page 11 opposite: Fig 3).
The Envitec unit will go through a self
-
test procedure which includes activating the alarm. This
self
-
test will activate the vent relay and also the
‘
Vent Active
’
light on the front.
As the self
-
test procedure finishes the Envitec alarm condition will clear but the
‘
Vent Active
’
LED
will remain lit. The
user must clear the condition by pressing the
‘
Vent Reset
’
switch
on the
front of the unit below the Vent Active LED (see Page 11 opposite: Fig 4).
On newly installed systems or systems where the O2 sensor has been replaced (see Page 12 for
instructions), the Envitec unit will generally need to be recalibrated.
This can be done with a 100% O2 source or more commonly with the current ambient levels of
O2 assumed to be acceptable.
The default screen of the Envitec unit includes
‘
Alarm Limits
’
and
‘
Calibration
’
legends. Press the
relevant function key, below the screen, depending on the application (see Fig 2)
.
Use the Calibration function to calibrate the unit: Ambient Air
-
21%; Pure Oxygen
-
100%.
Use the alarm limits button to set the %O2 upper and lower limits outside of which the system
should alarm.
Caution! Danger!
The oxygen concentration of the breathing air supply must not be lower than
18%
These procedures are described in the Envitec user manual supplied with the system on a CD.
We recommend printing the manual for future reference.
Fig 1
Fig 2
