Air Supply; Air Discharge Piping - Sahara -Pak HC-1260 Instruction Manual

INSTRUCTION MANUAL
Model HC

1.0.4 Air Supply

1.0.4.1
1.0.4.2
1.0.4.3
1.0.4.4

1.0.5 Air Discharge Piping

1.0.5.1
Reference 219
Page 11 of 46
The air supply should be between 250F - 400F, and 100
PSIG - 125 PSIG compressed air.
In piping the air to the dryer, use a pipe size equal to or larger
than the dryer line size, keep the length of piping as short as
possible, and insulate the piping.
The compressed air generated by a reciprocating compressor
contains some pulsation; the amplitude and frequency being
related to the number of stages, speed, etc. Normally, the
pulsation associated with a multi-stage compressor will not
affect the operation of the dryer; however, it is recommended
that a PULSATION DAMPENER be installed between a
reciprocating compressor and the dryer to prevent excessive
desiccant breakup and component fatigue. A pulsation
dampener should be used in any installation where the
pulsation seems excessive. As with the air supply piping, the
pulsation dampener, if installed, should be insulated.
If the compressed air system cannot be shut down during
dryer maintenance periods, a six-valve block and bypass
valving arrangement should be installed to allow for isolating
and depressurizing the dryer, while still maintaining
compressed air delivery. Note that the bypassed air will not be
dried. The cooler and separator should still be utilized. The
scheduled maintenance periods occur at intervals of 2000
hours running time and normally require only a couple of hours
to complete.
If an air receiver is required in the compressed air system for
air storage, it should be installed downstream of the dryer.
Here it will store dry air (and require no draining). This will
eliminate the possibility of overloading the dryer with stored air
in wet receivers.
Rev 2
06/20/2013