35
CH0305-250
Set
up
down
8.2.2 Hardware alarms
These are set only on the instrument 5.1 (fig. 8.3).
When a temperature cycle (either manual or automatic) has been established, the alarms must be set immediately:
•
maximum temperature alarm:
about 5
°
C above the maximum set value
(or a few degrees above the set software alarm)
•
minimum temperature alarm:
about 5
°
C below the minimum set value.
(or a few degrees below the set software alarm)
5.1
After pressing the UP and DOWN keys continually, the variation speed is increased after a few seconds.
Under normal operations the two led lights should always be switched on. When a maximum or minimum alarm
condition occurs, the relevant led light switches off (led light 1 for maximum, led light 2 for minimum).
Do not press the SET button for more than three seconds. If this should happen by mistake, the instrument will enter
the programming mode.
Do not touch or modify anything! The instrument will automatically return to the normal operation mode after a few
seconds.
Modification of parameter programming could prevent the instrument from operating correctly. If this should occur,
contact the ANGELANTONI Industrie S.p.A. technical assistance service before carrying out the test.
Error signals
The instrument also visualizes the following messages:
“—”
probe has short circuited
“EEE”
probe interrupted, probe not connected or upper/lower visualization limits of the instrument have been
exceeded.
If the probe is damaged, please contact the ANGELANTONI Industrie S.p.A. technical assistance service. If the probe
has to be replaced, make sure that probe connections are also checked at the same time.
Minimum temperature alarm set-up (channel 2)
• Press the SET key twice: the led warning light 2 will
flash.
• Press the UP and DOWN keys to set the value. Wait a
few seconds, led warning light 2 will stop flashing and
the new value will be memorized automatically.
8.2.1 Software alarms
These are set on the control panel 4 (fig. 8.1).
For information on how to operate this programming, please refer to the attached OP7 instruction handbook.
When a temperature cycle (either manual or automatic) has been established, the alarms must be set immediately:
•
maximum temperature alarm:
about 5
°
C above the maximum set value
•
minimum temperature alarm:
about 5
°
C below the minimum set value.
Maximum temperature alarm set-up (channel 1)
• Press the SET key: the led warning light 1 will flash.
• Press the UP and DOWN keys to set the value.
• Wait a few seconds, led warning light 1 will stop flashing
and the new value will be memorized automatically.
8.3