Despatch LBB2-xxA/B-1 - Manual (Page 31)

LBB Series Oven Owner’s Manual
O PERATION
Version 15 31
Copyright © 2012 by Despatch Industries.
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 For sample heating, close vent when no ventilation is required
5.3. Operating Procedure
Warning!
Do not use flammable solvent or other flammable material in this
oven. Do not process closed containers of any substance or
liquid in this oven because they may explode under heat.

For fastest oven heat-up time, close the exhaust vent. After the
desired temperature is reached, adjust the vent as needed.
5.3.1. Start Oven
1. Turn
POWER
ON ( Figure 11 ). The circulating fan will start.
2. Set exhaust vent to desired opening by adjusting the damper at the rear of the oven (Figure
12).
a. Adjust the vent for maximum performance at various operating temperatures.
3. Enter desired setpoint on the High Limit instrument.
a. Set the High Limit instrument to a temperature 10° to 14°C higher than the desired
setpoint or to a temperature that should not be exceeded in the process.
b. If the
LOCK
on the High Limit instrument is lit, press and hold the
RESET
for four (4)
seconds to enable ▲ and ▼.
c. Press .
HSP1
will light.
d. Use ▲ and ▼ to set the High Limit temperature.
e. Press
RESET
(or ) once to enter the value and return to the process variable PV
mode.
4. Enter setpoint on the Control instrument.
a. Press until the
SP
lights.
b. Use ▲ and ▼ to set the operating temperature.
c. Press to enter the setpoint.
d. Press again to display the process temperature.
5. Turn
HEATER
ON.
 If the High Limit instrument is exceeded the heater shuts
down. Reset the High Limit instrument by pushing
RESET
on
the High Limit instrument.