Van Air Systems FR-1200 - Manual (Page 27)

INSTALLATION INSTRUCTIONS
FOR PDV-500 Series
The PDV-500 is designed for trouble-free and maintenance-
free draining of unwanted accumulations of condensation
and other foreign matter from any collection point in a com-
pressed air system without the need for electricity.
INSTALLATION
CAUTION: COMPRESSED AIR CAN BE DANGEROUS.
Before attempting to install the drain, be certain that the pres-
sure vessel on which the drain will be installed is completely
depressurized.
The drain should not be installed in areas that are exposed to
freezing temperatures (heater option is available). Be certain
the air system pressure does not exceed the 250 PSI working
pressure of the drain and the pressure to the control system
does not exceed 120 psi. The inlet temperature should not
exceed 180 degrees F.
Connecting the drain to the air system should be done by using
one of the recommended installation diagrams shown herein.
The installation of a strainer is not required or recommended.
Install the drain as close to the source to be drained as possible.
Since the PDV-500 uses gravity to fill the reservoir, the entire
drain must be installed below the vessel to be drained when
using the top inlet. If flexible tubing is used on the discharge,
be certain it is properly fastened to prevent it from whipping
when the drain discharges the condensation.
The PDV-500 will accept condensation from either the top or
the bottom of the reservoir. We recommend the use of the
top entry port. If the bottom inlet is used, then a vent line must
be used. The vent line should be installed down stream from
the vessel that is being drained. This will insure that the air
in the reservoir will properly exit as the condensation fills the
tank and replaces the air. Remove plastic plug and Install the
vent line in the 1/8" port located on the end plate in the upper
right corner (same endplate the control air/filter connects to).
The other end of the vent line should be run back to the air
system to a point just down stream from the source that is
being drained to a point of equal or lesser pressure. Use non-
galling pipe sealant on all joints. The use of shut-off valves,
unions and bypass valves is recommended. A backup wrench
should be used on the discharge ball valve to prevent it from
turning and causing the linkage to bind.
The inlet port that is not used must be plugged by using a
standard 3/4" npt plug. When using the top inlet, any reduction
in the 3/4"pipe size is not recommended and the PDV-500
reservoir cannot be higher than the bottom of the vessel that
is being drained. It is best to run the drain in a downward pitch
from the bottom of the vessel being drained to the PDV-500
inlet
The power to operate the PDV-500 comes from compressed air.
ONLY CLEAN DRY AIR SHOULD BE USED. The supply pressure
should be between 80 and 120 psig. The PDV-500 is supplied
with an inlet filter, which should be installed in the PDV-500 head
(See Dwg 2 on back). The use of unfiltered air can cause the drain
to fail.
Once the drain is installed, close the By-Pass drain valve and open
the Shut-Off valve. The pressure vessel can now be repressurized.
CHECKING THE DRAIN'S OPERATION
After installation is complete and the drain is on line, a check should
be made that the condensation is properly entering the reservoir.
This can easily be done by looking through the translucent reservoir.
If condensation is not entering the reservoir, check for the following:
1. Make sure the auxiliary shut-off valve is open.
2. Do not use the bottom inlet on the PDV-500 without
installing a vent line.
3. If a vent line is installed, make sure it is down stream
from the vessel that is being drained.
4. Be certain that the PDV-500 reservoir is not higher than
the vessel that is being drained. This is very important
when using the top inlet on the PDV-500 reservoir.
5. Check to make sure the vessel being drained has
condensation in it.
If the top inlet is being used and no condensation is entering the
PDV-500 reservoir, and all the above items have been checked,
we recommend that the bottom inlet be used with a vent line out
of the top.
If condensate fills the reservoir and the drain does not operate,
check to see if control line air is supplied to control line port. If the
drain is supplied with an optional test button, the supply of control
line air can be checked by pushing the test button. If the unit does
not operate, then no air is being supplied or the inlet filter is plugged.
OPTIONS
z z z z z High Level Alarm. z z z z z Heater.
WARRANTY
The PDV-500 is warranted to be free from defects in workman-
ship and materials for a period of one year from the date of
shipment. The liability of the manufacturer is limited to repair or
replacement of the drain at its option. In no event shall the
manufacturer be liable for special or consequential damages or
for delay in performances of this warranty.
CAUTION: Any attempt to repair the drain without authorization will
void any warranty.
INSTALLATION DIAGRAMS ON REVERSE SIDE
Van Air Systems, Inc. 2950 Mechanic St. Lake City, PA 16423
Phone: (814) 774-2631 Toll Free: (800) 840-9906
32-0277-A 2/09