Gram Scientific COMPACT 600 Mode D'emploi page 37

To exit without change push
After power failure the controller returns to stored settings.
Dry cooling
(This function is only available on C – cabinets)
When the cabinet is supplied, dry cooling (DC) is not activated. In order to activate (DC),
which will lower the rH% inside the cabinet, the following must be done:
Push and hold
segment - indicating (DC) being activated. When (DC) is activated it is therefore not
possible to show temperatures with one decimal in the display.
De-activation of (DC) is done in the same way (the small "d" will be turned off).
Setting temperature alarm parameters
Adapting the below parameters to suit the real conditions of use, it is important to ensure
that the settings do not make the alarm system either too sensitive or too insensible.
Adjusting the difference between temperature set point and hAL / LAL alarm settings to
narrow, will result in unintended alarms. A narrow gab combined with a too short dAh could
result in an AH alarm, just by opening the door.
dAh should never be adjusted to less than 30 minutes.
To access the temperature alarm parameters, push and hold
5 seconds. The display will flash the first temperature alarm parameter hAL.
To access the individual parameters push
To move between and adjust the parameters use
Push to store the new setting. The controller automatically jumps to the next parameter.
Adjustable parameters are:
hAL High Alarm Limit
LAL Low Alarm Limit
dAh Time delay Alarm high
dAL Time delay Alarm Low
Atd Alarm temperature differential
The above parameter settings will result in the following:
To trigger a high temperature alarm (Ah) the cabinet temperature must be above hAL =
25°C for more than dAh = 120 minutes. This will result in
alternating between Ah and the present cabinet temperature.
Once the temperature goes below 23°C (hAL – Atd) the alarm changes from present to
being logged. The display will show current temperature and
there has been a temperature alarm.
765042499
once, or do not touch any key for 60 seconds
for 5 sec. When the 5 sec. have elapsed, a small "d" is lit in the decimal
.
and
Factory default
+ 25° C
- 29° C
120 minutes
20 minutes
2K
Rev. 001
and simultaneously for
.
being lit and the display
will remain lit indicating
37