Algas SDI ZIMMER, Operation & Maintenance Manual

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Ref. 1 – Liquid LPG enters the inlet valve where the inlet valve
screen prevents debris from entering.
Ref. 2 – Liquid flows through the inlet valve where it is controlled by
a metal-to-metal seat and ball. The infinite seating positions of the
ball provide long life.
Ref. 3 – As liquid passes through the tubes, the energy is
transferred, causing the liquid to boil. Tubes provide a secure
pressure boundary and exceptional heat transfer.
Ref. 4
– Energy drawn from the heat sink is replenished by self-
regulating heaters without the need for switches, temperature
sensors, relays, or other controls. The heaters cannot overheat by
nature of their design and they consume only as much energy as is
needed for vaporization.
Ref. 5 – Power is supplied to the heaters by a wide range of
voltages through a factory-mounted explosion-proof seal.
Ref. 6 – As LPG vapor exits the vaporizer, it heats or cools the
temperature-sensitive bulb, providing feedback to the inlet valve.
Ref. 7 – The inlet valve receives feedback from the temperature-
sensitive bulb and combines it with pressure feedback to ensure
only superheated LPG vapor (superheat is the amount of
temperature above the dew point) leaves the vaporizer. The valve
modulates the inlet flow to control the process.
In the event of a power failure, the vaporizer will continue to
operate until all available energy has been used. If the power
comes back on before all the energy has been used, the heat
process served by the LPG should remain engaged. Otherwise,
the inlet valve will close as the heat stored in the heat exchanger is
transferred to the passing fluid. When the power comes back on,
the vaporizer will automatically re-energize and begin operation.
Basic Features
The heaters are self-temperature-regulating and therefore do not
have (or need) an external temperature sensor. The heat
generating material in the heaters also acts as a high-temperature
limit by breaking down if it reaches its critical point.
Because of its unique design features, the
ZIMMER
can be
operated on power supplies ranging from 100 - 480 volts (480 VAC
Wye connection or 277VAC per phase to neutral) depending on the
model. When operated at 110V, the maximum continuous capacity
rating is reduced by 25%.