Despatch LEB Series - Manual (Page 30)

22
HI-LIMIT INSTRUCTIONS
The oven has been tested and the HI-LIMIT preset at
the factory for normal operating conditions. In most
applications, it will not be necessary to alter the oven's
settings, except for the Setpoint. This section contains
information and reference material to change Setpoint,
access the Set-up mode and change display between
°C and °F.
The HI-LIMIT instrument was carefully programmed at the factory using the
Operating and Set-up mode. The parameters that may be accessed include;
display functions, and thermocouple selection.
Changing Setpoint
Enter setpoint on the HI-LIMIT instrument. Set HI-
LIMIT instrument to a temperature 10°C to 14°C
higher than the setpoint or to a temperature that
should not be exceeded in the process.
1. If the
on the HI-LIMIT is lit, press and
hold the for four (4) seconds to enable
the and keys.
2. Press
key, HSP1 will be lit.
3. Use key and key to set hi limit temperature.
4. Press or
once to return (also enters the value) to the process
variable PV mode.
5. If the HI-LIMIT instrument is exceeded the heater will shut down. Reset the
HI-LIMIT by pushing on the HI-LIMIT instrument.
WARNING: Failure to
heed warnings in this
manual and on the
oven could result in
death, personal injury
or property damage.
WARNING: Never operate
oven at a temperature in
excess of the maximum
operating temperature of 204°C
(400°F).