Van Air Systems FR-1600 - Manual (Page 5)

PAGE 5
4.1 LOCATION
WARNING
DO NOT INSTALL THIS DRYER SYSTEM IN AN ENVIRONMENT
OF CORROSIVE CHEMICALS, EXPLOSIVE GASSES, POISONOUS
GASSES, OR SATURATED STEAM HEAT.
Locate dryer system in a protected, well vented area where ambient
temperatures are between 40 o F and 120 o F. Allow sufficient clearance
over and around the dryer system for access to desiccant fill and drain
ports and controls. Refer to SECTION 3.2 for dryer dimensions.
If this dryer system must be installed where ambient temperatures are
below 40 o F, insulation and heat tracing must be properly installed on
the inlet piping, prefilter, purge exhaust line and the desiccant towers to
prevent freezing of the equipment.
Position the dryer system in the upright position on a solid, level,
vibration free surface capable of supporting the dryer system’s weight.
Refer to SECTION 3.1 for dryer system specifications.
The dryer system should not be located in extremely dirty areas where
airborne contaminants can accumulate on the dryer system. If this
cannot be prevented, the dryer system should be cleaned periodically.
An accumulation of dirt on the precooler will greatly reduce its
efficiency. Accumulated dirt may also cause the inlet transfer valve to
fail.
INSTALLATION SECTION 4
4.3 ELECTRICAL CONNECTIONS
WARNING
SERIOUS PERSONAL INJURY AND DAMAGE TO THE DRYER
SYSTEM WILL OCCUR IF THE DRYER SYSTEM IS CONNECTED
TO A POWER SOURCE OTHER THAN THE VOLTAGE LISTED
ON THE DATA TAG.
Connect the dryer system power cord to a 115V/1PH/60Hz power
source capable of supplying a minimum of 2 AMPS.
4.2 DESICCANT INSTALLATION
The desiccant was factory installed in both towers before the dryer
was shipped.
4.4 INSTALLING THE PURGE MUFFLERS
Purge mufflers were shipped separately. They should NOT be installed
until the dryer system has been operated for several hours. From
desiccant installation, some dust may be present in the desiccant tow-
ers. Operating the dryer system with the mufflers installed immediately
after the towers have been filled with the desiccant or during initial start
up may cause the mufflers to clog. See SECTION 5.6 for purge muffler
installation.
4.7 CONNECTING THE INLET AND OUTLET
The inlet and outlet of this dryer system are 3" 150# RF flange. Con-
nect the inlet and outlet air piping to the dryer system.
START UP SECTION 5
5.1 START UP
WARNING
BEFORE STARTING THIS DRYER SYSTEM, FOLLOW THE INSTAL-
LATION INSTRUCTIONS AND PROCEDURES COMPLETELY. SERI-
OUS PERSONAL INJURY CAN RESULT IF INSTRUCTIONS ARE NOT
CAREFULLY AND COMPLETELY FOLLOWED.
DO NOT REMOVE, REPAIR, OR REPLACE ANY ITEM ON THIS
DRYER SYSTEM WHILE IT IS PRESSURIZED.
Make sure that the Power switch is in the OFF position.
If the dryer system is being started up for the first time or after the des-
iccant has been changed, the purge mufflers must be removed. See
SECTION 2.2 for safety precautions concerning the desiccant dust.
WARNING
WHEN OPERATING THIS DRYER SYSTEM WITHOUT THE MUF-
FLERS INSTALLED, USE HEARING PROTECTION.
Pressurize the air system.
Place the Power switch in the ON position. One tower will already be
pressurized. The other tower will depressurize. The purge valve on
the depressurized tower will be open, air should be exhausting from
the muffler.
The dryer system is equipped with a purge metering valve. The setting
should be checked per SECTION 5.2 before placing the dryer system
on stream.
Set the control pressure regulator per SECTION 5.3.
Set the lubricator and regulator for the pre-cooler air motor per
SECTION 5.4.
Condition the desiccant bed per SECTION 5.5 before placing the dryer
system on-stream.
FIGURE 5B REQUIRED PURGE FLOW
DRYER
MODEL
FR-1600
PURGE
FLOW
290 SCFM
The Prep-40 dryer system is equipped with a purge metering valve and
gauge located in the purge piping. The gauge indicates the back pres-
sure on the purge flow orifice, which is in direct correlation to the purge
flow in SCFM.
The purge flow can be adjusted for the operating conditions.
This dryer system was shipped with the purge flow set for the rated inlet
flow at 100 PSIG. Reference SECTION 3.1 for rated flow. This setting
should be correct for most installations. Before placing the dryer system
on stream, check the purge metering valve setting.
FIGURE 5B shows the purge flow, in SCFM, and the pressure setting
required. This flow is required to properly regenerate the desiccant beds.
PURGE FLOW
GAUGE SETTING
40 PSIG
5.2 ADJUSTING THE PURGE FLOW
IMPORTANT
NEVER OPERATE THE DRYER SYSTEM WITH THE PURGE METER-
ING VALVE CLOSED. IF THE VALVE IS CLOSED, THE TOWERS WILL
NOT REPRESSURIZE AND SWITCHING FAILURE WILL OCCUR.
DO NOT ADJUST THE PURGE METERING VALVE ABOVE OR
BELOW THE RECOMMENDED SETTING FOR THE OPERATING
CONDITIONS OF THIS INSTALLATION. IMPROPER SETTING MAY
CAUSE POOR DRYER SYSTEM PERFORMANCE AND/OR EXCES-
SIVE USE OF PROCESS AIR.
4.5 FILL LUBRICATOR WITH OIL
The lubricator is located in the air line between the regulator and the
pre-cooler air motor. Fill the lubricator with Pneumatic Lubricating Oil
SAE10 AD220 (Van Air p/n 26-7032 quart).
Install the purge mufflers per SECTION 5.6.
4.6 CONNECT DRAIN LINE
Drain lines for the separator/prefilter and prefilter are run to a common
drain coupling located on the skid. Connect drain line from skid to an
appropriate collection container as filter discharge may contain
compressor lubricants. Comply with all regulations concerning their
disposal.