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ASDI
Operations and Maintenance – TX Models – P/N: 54629
4-20
OPERATION
4
GENERAL
TORREXX
TM
Electric Vaporizer utilizes a finned cast aluminum heater core. The
heater core contains multiple cast-in resistance heating elements. Multiple wiring
configurations allow a variety of AC input voltages to suit local power supply
requirements.
Liquid LPG enters the vaporizer through the liquid inlet solenoid valve at the base
of the pressure vessel.
During operation, a K-type thermocouple temperature sensor and solid-state
control system maintain the core temperature at 165°F to 175°F (74°C to 79°C).
As the temperature increases on start, the liquid inlet solenoid valve opens at
131°F (55°C), liquid enters the vaporizer and comes in contact with the heater
core. Vaporization results as the liquid extracts energy (heat) from the heater
core. As the heater core cools, the temperature sensor provides a signal to the
control system to energize the heater power solid-state relay, applying power to
the heating elements.
Prior to startup, always ensure cover plate is torqued to 26.6 Nm (19.6 ft. lbs.).
Improperly installed cover plate compromises the explosion proof rating of the
vaporizer and can lead to water ingress that damages the electrical equipment.
OPERATING INSTRUCTIONS
1) Complete the installation and leak test.
2) Check current and voltage to verify proper operation of the vaporizer.
3) This unit will not be damaged by operating the unit in a “dry” condition. It is
not necessary to have liquid in the unit for testing or evaluation.
4) Normal operating temperature is 165°F to 175°F (74°C to 79°C). Use
caution when working around vaporizer.
STARTING THE VAPORIZER
CAUTION
Power wiring terminals may become loose during shipping. Prior to
applying electrical power all power wiring terminals must be
retightened. Recheck terminals and retighten as necessary during
next service interval.
CAUTION
Do not start the vaporizer when both inlet and outlet isolation
valves are closed. Pressure can build in the vaporizer during
startup and blow the relief valve.
Summary of Contents for TORREXX TX240
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