Van Air Systems D42-D84 - Manual (Page 4)

PAGE 4
2.2-A INLET AND BYPASS PIPING
Using Figure 3 as a reference, make the necessary piping
connections into the dryer.
Inlet and outlet isolation valves should be installed on the dryer.
These valves will aid in the start up and shutdown of the dryer.
A bypass valve and piping should also be installed. This will allow
the dryer to be taken off stream without interrupting the air system.
2.2-B OPTIONAL PRESSURE RELIEF VALVE
A pressure relief valve should be installed to conform to OSHA
safety standards. Refer to OSHA Standard Section 1910.169,
paragraph “b”, subparagraph “3” and any other federal, state or
local codes concerning pressure vessels.
A coupling was provided on the upper back side of the vessel for
installing the relief valve. A bushing will be necessary to reduce
the coupling to the valve inlet size. Reference FIGURE 3 for
location.
Listed below is the recommended relief valve available for
each dryer. Contact your local Van Air representative to order.
DRYER
D-42
D-48
D-54
D-60
D-66
D-72
D-78
D-84
VALVE SIZE
1-1/2" NPT
1-1/2" NPT
2" NPT
2" NPT
2" NPT
2" NPT
2-1/2" NPT
2-1/2" NPT
CONN. SIZE
3" NPT
3" NPT
3" NPT
3" NPT
3" NPT
3" NPT
3" NPT
3" NPT
PART NO.
14-0540
14-0540
14-0990
14-0990
14-0990
14-1664
14-1665
14-1665
2.2-C OPTIONAL GAUGE KIT INSTALLATION
A coupling was provided on this dryer for the installation of a
gauge.
Three gauges are available for this dryer from your Van Air
representative.
Thread the gauge into the coupling provided on the lower, front
side of the vessel as shown in FIGURE 3.
GAUGE KIT
PRESSURE
TEMPERATURE
COMBINATION PRESSURE/TEMPERATURE
PART NO.
29-0252
29-0326
29-0200
2.2-D MANUAL DRAIN VALVE
A brass ball valve was shipped separately with the dryer. Install
the valve on the drain line. Reference FIGURE 3 for location.
CAUTION
DO NOT CONNECT THE DRAIN TO A PRESSURIZED LINE.
DO NOT INSTALL THE DRAIN LINE IN THE DIRECTION OF
PEOPLE AND EQUIPMENT. WHEN THE DRYER IS
DRAINED THE DRAIN SOLUTION WILL BE DISCHARGED
UNDER LINE PRESSURE. POINTING THE DRAIN IN THE
DIRECTION OF PEOPLE AND EQUIPMENT MAY RESULT
IN INJURY AND DAMAGE.
DO NOT INSTALL A FLOAT TYPE OR SOLENOID TYPE
DRAIN ON THE DRYER. THE DRAIN SOLUTION WILL
CAUSE THESE TYPES OF DRAINS TO FAIL, THUS
RESULTING IN FLOODING OF THE DRYER.
The drain of the dryer can be remotely piped away from the dryer.
DO NOT connect the drain line to a pressurized line. Make sure that
the line is vented to atmospheric pressure.
Any remote drain piping should be of the same size and on the same
level or lower than the drain valve.
When installing the drain line, make sure that the discharge end of
the line or valve is directed away from people and equipment.
2.2-E OPTIONAL AUTOMATIC DRAIN VALVE
The MDV-400I drain valve is recommended. Contact your local
VAN AIR representative to order.
MODEL VOLT SIZE PART NO.
MDV-400I 115 1" NPT 39-2411121
Complete the automatic drain valve installation as shown in
FIGURE 3 and outlined in the instructions supplied with the drain.
The drain line can be remotely piped. Follow the precautions as
outlined in Section 2.2-D.
2.2-F AFTERFILTER
The installation of an afterfilter prevents any accidental flow of
materials from the dryer into the downstream piping.
The afterfilter can be installed before or after the outlet isolation
valve. If the afterfilter is installed before the isolation valve, the filter
can be isolated from the air system when the dryer is isolated for
DRYER
D-42
D-48
D-54
D-60
D-66
D-72
D-78
D-84
FILTER
F101-1500-B
F101-1500-B
F101-2000-B
F101-3500-B
F101-3500-B
F101-3500-B
F101-5000-B
F101-5000-B
IN/OUT
3" NPT
3" NPT
4" RF FLG
6" RF FLG
6" RF FLG
6" RF FLG
6" RF FLG
6" RF FLG
maintenance.
Below is a chart of VAN AIR recommended filters. Contact your
local VAN AIR representative to order.
2.2-G DESICCANT INSTALLATION
IMPORTANT
This dryer was shipped WITHOUT the desiccant installed.
The desiccant MUST BE INSTALLED before using the dryer
THE USE OF CHEMICALS OTHER THAN VAN AIR
DESICCANT WILL VOID THE WARRANTY ON THE DRYER.
The procedures for filling the dryer with desiccant are outlined in
Section 4.5 of this manual.
DEL-P GAUGE
PD-2
PD-2
PD-2
PD-2
PD-2
PD-2
PD-2
PD-2
2.2-H HIGH LEVEL ALARM HLA-120 (P/N 26-3667)
The HLA-120 high level alarm is designed to alert personnel that
the drain solution in the dryer has reached an unacceptable level.
A connection is provided on the dryer.
Contact your local VAN AIR representative to order.
Install the HLA120 high level alarm in the connection as shown in
FIGURE 3 and as outlined in the instructions supplied with the
alarm.
SECTION 2 INSTALLATION