Despatch LCC1-87NV-2 - Manual (Page 19)

10
Water droplets in airstream through filter, free water (RH = 100%), will saturate
filter very quickly and may cause burnout or holes in burned off filter media.
High level of radiation in the vicinity of the filter unit.
CONTROL Instrument
The CONTROL instrument operates the heating element in response to the entered
temperature setpoint. It provides digital indication of the setpoint and actual oven
temperature. Please refer to the operator’s manual for the CONTROL instrument
provided with the oven, for detailed operating instructions.
HIGH LIMIT Instrument
The purpose of the HIGH LIMIT instrument is to protect the product and/or the oven
from excessively high temperatures. If the setting on the HIGH LIMIT is exceeded, the
heating process will discontinue.
The HIGH LIMIT instrument must be set to a temperature slightly higher than the
CONTROL instrument setpoint or to a temperature that should not be exceeded in the
process. The instrument must be manually reset by pushing the red button.
Product High Limit
Instrument
If the product being processed has a
critical high temperature limit, the HIGH
LIMIT instrument should be used as a
product high limit instrument. The HIGH
LIMIT instrument should be set to a
temperature somewhat below the
temperature at which the product could be
damaged. Use the CONTROL instrument
or a pyrometer to determine the product
setting. If the destructive temperature of
the product is already known, this could be
used as a point below which the product
HIGH LIMIT is set.
NOTE:
Despatch Industries cannot be responsible
for either the process, the process
temperature used, or for the quality of the
product being processed. It is the
responsibility of the purchaser and operator
to see that the product undergoing
processing in a Despatch oven is
adequately protected from damage.
Carefully following the instructions in this
manual will assist the purchaser and
operator in fulfilling that responsibility.