Advantage Sentra SK Series, Instruction Manual

Page: 28 / 70

Temperature Control Units : Sentra with VE Series Instrument
Page: 28
Advantage Engineering, Inc.
525 East Stop 18 Road Greenwood, Indiana 46142
317-887-0729 Fax: 317-881-1277
Service Department Fax: 317-885-8683
www.AdvantageEngineering.com
B. INSTRUMENT OPERATION
1. Process temperature control operation is started by toggling the unit’s
On / Off rocker switch to the “on” position.
2. When the On / Off rocker switch is toggled “on”, the instrument will
immediately display the process temperature as indicated by the
temperature sensor.
3. If temperature is less than 100°F, the PVT
TM
cooling valve will open for
45 seconds. This is automatic and purges entrained air from the process
system to the drain. Automatic venting is indicated by a Air Prg display
in the Temperature window. If the automatic vent cycle does not vent all
entrained air (evidenced by a “rattling” sound in the unit and fluctuating
pressure gauges), manually vent the system by depressing and holding
the Up Arrow and Down Arrow push buttons. Release the buttons to
conclude the manual vent sequence. If the To Process temperature
exceeds 100°F, the instrument will bypass the automatic vent cycle and
step immediately to process temperature control operation.
4. To display the setpoint temperature, briefly touch the Up Arrow or Down
Arrow push buttons. To change the setpoint, hold the Up Arrow or Down
Arrow push buttons until the preferred setpoint temperature is indicated
in the Temperature window. Setpoint temperatures can be adjusted
anytime.
C. INSTRUMENT CONTROLS
1. UNIT ON/OFF SWITCH: This rocker switch engages/disengages
electrical supply to the pump, heater and PVT
TM
cooling valve (figure
3.3A).
2. UP ARROW: Depress briefly to display the setpoint temperature.
Depress and hold to increase the setpoint temperature. If pressed
momentarily the setpoint value is incremented by one degree. If held
down longer the setpoint will increase slowly at first and then faster. The
setpoint control range is 32° to 250°F (0° - 121°C).
3. DOWN ARROW: Depress briefly to display the setpoint temperature.
Depress and hold to decrease the setpoint temperature. If pressed
momentarily the setpoint value is incremented by one degree. If held
down longer the setpoint will increase slowly at first and then faster. The
setpoint control range is 32° to 250°F (0° - 121°C).
D. STATUS INDICATING LIGHTS
1. POWER ON: Illuminates when power is applied to the unit.
2. PUMP: Illuminates when the unit’s On / Off rocker switch is turned “on”
and the motor pump is operating. Even with the On / Off rocker switch
“on”, the Pump light will not illuminate if a safety fault condition exists.