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D.
Process Piping
Skid should be kept free of all transmitted vibrations. Piping on unit is self-
supporting and is not be used to support any other components.
E.
Electrical
Electrical leads shall be connected per Electrical Schematic. Wiring shall be in
accordance with local, national and other governing electrical codes. After the
appropriate electrical connections have been made, check to ensure proper
rotation. Refer to electrical schematic for proper connections.
CAUTION: Unit must be phased to provide proper blower rotation.
Blower fuses have been removed to prevent possible damage to blower vanes
during dryer rotation check. DO NOT turn ON blower circuit breaker (CB2) until
rotation of the cooler fan has been verified. Proper air flow through cooler is
towards motor. If incorrect, then change incoming power wires. DO NOT change
factory wiring.
F.
Desiccant Charge
The vessel is factory filled with Molecular sieve. NOTE: New desiccant will initially
adsorb mercaptans. To maintain odorant at the dryer exit, slightly open bypass
valve V7 during initial operation or open optional mercaptan bypass valve.
G.
Electrical Heater
The unit is equipped with an electric heater. Before applying power, the heater
must be checked with an insulation resistance tester. All circuits must indicate a
minimum resistance reading of 50,000 ohms between each circuit phase and
ground. If any circuit does not meet this requirement, connect 120VAC to circuit
for several hours, and then recheck. Repeat this procedure if necessary.
H.
DDP (Digital Dew Point transmitter)- if equipped with "DDP" option
Install the Xentaur Digital Dew Point transmitter/sensor. This is a "blind" sensor
that provides signal to show Dewpoint temperature on operator display.
For accurate dewpoint measurement, it is important to close V6 slightly to
force gas across DDP sensor. Usually 10-15 degree closure on valve handle is
sufficient.
Refer to Xentaur manual for details on maintenance, and operation of Digital Dew
Point transmitter.
I.
Drainage
Connect the pre-filter and sump tank drain valves to a liquid/gas recovery system.
These components require draining after each regeneration.
J.
Relief Valve
Relief valve should be piped to a safe location.
DANGER: A block valve is located at the inlet of PRV that MUST be locked open
prior to commissioning. Closing of block valve during operation could result
in serious injury or death.
NG-SR IOM
4
PSB INDUSTRIES
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