CSZ ZP 16, Installation, Operation & Maintenance Manual, Page: 56 / 88

OPERATION
Page 4-8
D u r i n g h u m i d i t y
operation, the dry air
purge system must be
turned off.
NOTE
DRY AIR PURGE
In normal operation the dryer towers will switch every 30 seconds. Each tower
purges with an audible exhaust. Do not plug or restrict the purge air exhausts. If
operating conditions change, different purge ori
fi ces may be required. If ori fi ces are
replaced, they should be replaced in matched pairs.
The heat of absorption and the solenoid valves will cause the unit to become warm.
This is normal and does not indicate a malfunction. The temperature rise is more
pronounced in a dryer operating at a low
fl ow rate.
During operation, there may be a faint fume from the solenoid valves. This is
caused by the AC voltage on the coil. It does not indicate a malfunction.
The highest ambient temperature at which a heatless dryer can be operated is
125ºF (52ºC). The maximum air temperature at the inlet which the instrument
should handle is 125ºF (52ºC).
Switch must be on
manual mode for single
set-point operation.
NOTE
CLEAN AND OIL-FREE
AIR SHOULD BE USED
TO SUPPLY THE DRY
AIR PURGE SYSTEM.
The hose inside the dry
air purge package must
be run to a drain. Both oil
and water will be drained
through this line.
NOTE
Incoming
Air
Filter Air
Valve-Solenoid,
Air Supply
Filter,
Coalescing
Air Dryer
Dry Air Inlet to
Chamber Interior
Pressure Regulator with
Gauge Set at 80 PSIG
(3.2 bar(g))
Drain
Hose
Moisture
Indicator
Flow Meter with
Valve
Set at 150 SCFH
(71 L/min)
Figure 3. Dry Air Purge System Components Location (5 SCFM Unit)
Do not expose the
bowl or sight glass
to materials such as
carbon tetrachloride,
t r i c h l o r e t h y l e n e ,
acetone, paint thinner,
or other similar materials
as they can also cause
a chemical reaction
with the plastic and can
cause it to rupture.
CAUTION
!
Note: CSZ is continuously upgrading the components used
in its equipment. Consequently, the physical appearance of
certain components may vary from that shown.