Van Air Systems ID35 - Manual (Page 2)

PAGE 2
SECTION 1 SPECIFICATIONS
1.0 PURPOSE OF OPERATION
The Van Air In-Line Desiccant Dryer is designed to
be filled with adsorbent desiccant such as silica gel.
The saturated air or gas enters the bottom side
connection (inlet) on the vessel and travels through
the bed of adsorbent material.
Dry air or gas exits the top side connection (outlet)
on the vessel.
FIGURE 1 DRYER DETAILS
SECTION 2 INSTALLATION
2.1 LOCATION
Proper performance depends on the correct location of the unit. Locate
the dryer at the lowest temperature and highest pressure possible in the
system. If there is a pressure regulator in the system, install the dryer
upstream of the regulator.
Make sure that the system pressure does not exceed the 250 PSIG
maximum working pressure of the vessel.
IMPORTANT
ALWAYS PROCESS AIR THROUGH THE DRYER AT THE
LOWEST POSSIBLE TEMPERATURE AND THE HIGHEST
PRACTICAL PRESSURE.
FIGURE 2 MAXIMUM CAPACITIES -SCFM (Nm 3 /hr)
MAXIMUM
WORKING
PRESSURE
250 PSIG
200 PSIG
13.8 Bar
66
106.1
100 PSIG
6.9 Bar
35
56.3
125 PSIG
8.6 Bar
43
69.1
150 PSIG
10.3 Bar
50
80.4
40 PSIG
2.8 Bar
17
27.3
60 PSIG
4.1 Bar
23
37.0
80 PSIG
5.5 Bar
29
46.6
90 PSIG
6.2 Bar
32
51.4
20 PSIG
1.4 Bar
10.5
16.9
10 PSIG
0.7 Bar
7.5
12.1
5 PSIG
0.3 Bar
6
9.6
2.2 PIPING AND ANCILLARY EQUIPMENT
If the dryer is being installed in an existing piping system, make sure
that the pipe is free of scale and rust.
The dryer is supported by the piping system. Adequate pipe supports
must be used to prevent damage to the pipeline and dryer.
2.2-A ISOLATION VALVES
Using Figure 3 as a reference, make the necessary piping connections
into the dryer.
Inlet and outlet isolation valves are required to isolate the dryer when
the adsorbent material is changed.
2.2-B OPTIONAL PRESSURE RELIEF VALVE (p/n 14-2213)
A pressure relief valve should be installed to conform to OSHA
safety standards. Refer to OSHA Standard Section 1910.169,
paragraph “b”, subparagraph “3”. Also comply with all applicable
federal, state and local codes concerning pressure vessels.
2.2-C OPTIONAL PRESSURE GAUGE (p/n 29-0160)
An optional pressure gauge is available to mount in the 1/4" NPT
connection on the fill port.
250 PSIG
17.2 Bar
81
130.2
These valves will also aid in start up and shutdown of the dryer. The
inlet isolation valve should be mounted before the pressure relief
valve. The outlet isolation valve should be installed on the dryer
outlet. A manual valve and a tee should be installed on either the inlet
or outlet side of the dryer to depressurize the unit.
A bypass is not recommended, as contamination can go downstream
while the unit is maintained. The bypass valve can also accidentally
be left open.
2.2-D AFTERFILTER (p/n 84-23256)
The installation of an F200-55-1/2-RB-MD-PD6 afterfilter prevents
any adsorbent material from going downstream.
The afterfilter should be installed upstream of the outlet isolation
valve. This will allow the filter to be isolated from the air system
when the dryer is isolated for maintenance.
FIGURE 3 DRYING TIME USING SILICA GEL
(at rated flow at 100 PSIG)
INLET
TEMPERATURE
60°F
80°F
100°F
TIME
(MINUTES)
542
283
156