Parker Balston 75-A20 User manual

Bulletin TI-75A20C Installation, Operation and Maintenance Manual
Technical Information Parker Balston 75-A20 Compressed Air Dryer
Parker Hannin Corporation
Industrial Gas Filtration and
Generation Division
Lancaster, NY • 1-716-686-6400
1
Parker Balston 75-A20 Compressed Air Dryer
Bulletin TI-75A20C
Installation, Operation, and Maintenance Manual
CELL: DRY
®
Introduction
Installation
Balston compressed Air Dryers provide clean, dry air from
an existing compressed air supply. The 75-A20 Air Dryer
delivers -100°F (-73°C) dewpoint air.
The 75-A20 Compressed Air Dryer is powered by a 12 VDC
power supply. Each dryer is equipped with a plug-in trans-
former for connection to the local power supply.
These instructions must be thoroughly read and under-
stood before installing and operating this product. If you
have any questions or concerns, please call the Technical
Services Department at 800-343-4048, 8AM to 5PM Eastern
Standard Time (North America only) or email at balston-
[e-mail]. For other locations, please
contact your local representative.
The dryer should be fastened securely, in a vertical position,
to a wall or similar mounting surface according to National
Electrical Code (NEC) and local building code guidelines. All
mounting hardware supplied by the customer should be ad-
equately sized to support the weight of the unit in its mounted
position.
To facilitate routine maintenance, install a shut-off valve on the
supply air line, upstream from the dryer. Pipe the supply air
(60 psig-125 psig, 4.1 barg-8.6 barg) to the inlet port of
the dryer. (Note: Pipe size must match inlet and outlet port
sizes or adequate lengths of pipe must be used to reduce/
increase pipe size to match ports. Please consult factory for
additional assistance.) The air dryer should be installed on a
compressed air system which contains a properly sized
aftercooler. The temperature of the supply air entering the
Balston Air Dryer should not exceed 78°F(25°C). If the
temperature of the inlet compressed air exceeds 78°F(25°C),
the dewpoint of the air generated by the dryer may exceed
the rated dewpoint. If the compressed air supply has excess
water and/or oil or is supplied to the dryer from an elevated air
line, a drip leg must be installed directly upstream from the dryer to reduce the amount of water and oil
which could get into the dryer and associated valves and cause non-warranty damage to the unit (see Fig-
ure 2). A minimum supply air pressure to the air dryer of 60 psig (4.1 barg) is required to maintain proper
operation of the drying towers and associated valves. The maximum supply pressure should not exceed
125 psig (8.6 barg) or damage to the unit may occur.
It is important to control output pressure and ow from the dryer to avoid exceeding the rated capacity of
the dryer. If the maximum ow rate of the dryer is exceeded, the process air may not meet the published
dewpoint specications. The installation of a pressure regulator and ow control valve downstream from
the Balston Air Dryer is recommended to control output ow characteristics.
Figure 1 - 75-A20 Compressed Air Dryer

Bulletin TI-75A20C Installation, Operation and Maintenance Manual
Technical Information Parker Balston 75-A20 Compressed Air Dryer
2
Parker Hannin Corporation
Industrial Gas Filtration and
Generation Division
Lancaster, NY • 1-716-686-6400
Parker Balston 72-130 Pressure Regulator - The 72-130 should be used to control the inlet air pressure
to the dryer. Eliminating pressure uctuations from the compressed air supply enhances the operation of
the dryer, eases troubleshooting, and minimizes variations from documented specications which could
result from an inconsistent air supply. The 72-130 has 1/2" female NPT inlet and outlet ports, and is
assembled with a 0-130 psig (0-9.0 barg) pressure gauge.
Balston 2206N-1B1-DX Coalescing Prelter - When the compressed air supply to the dryer contains
excess water, install an auxiliary prelter upstream from the dryer. The Balston 2206N-1B1-DX coalescing
lter has 3/4" NPT ports and an automatic oat drain.
All installation, operation, and maintenance procedures for the compressed air dryers should be
performed by suitable personnel using reasonable care.
Disconnect the electrical power and isolate the unit from the compressed air supply before starting
any maintenance procedure.
The only required maintenance activity for the Balston 75-A20 Compressed Air Dryer is changing the lter
cartridges in the prelters annually (see Ordering Information at the end of this section for prelter cartridge
part numbers). The 75-A20 is equipped with a differential pressure indicator which monitors the pressure
drop across the prelters. Changing the prelter cartridges on the Balston Air Dryers requires approximate-
ly 15 minutes. Additional coalescing prelter cartridges and moisture indicating cartridges for the Balston
75-A20 Air Dryer may be ordered through your local Parker Balston representative.
Changing lter cartridges more frequently will translate into direct energy savings and reduced operating
costs. Annual electricity costs to operate a typical 100 HP compressor can be as high as $50,000. Pres-
sure drop in the system adds to this expense. A system operating at 100 psig that is experiencing a 2
psig pressure drop through a lter, requires an additioal 1% in operating energy costs or approximately
$500.00+ per year.
The moisture indicator monitors the condition of the air coming out of the dryer. The moisture indicator
should be green. If the indicator changes to yellow, follow the trouble shooting procedures on page 4.
Note: Upon start-up, the moisture indicator may be yellow, but the dryer should be permitted to run for at
least 30 minutes before reporting this as a malfunction.
Recommended Accessories
Maintenance
The 75-A20 Compressed Air Dryer is equipped with 2 coalescing prelters (B2102N-0B1-DX, B2102N-1B1-
BX). The prelters have integral automatic oat drains. The 1/8" NPT drain port will pass small quantities of
water and oil and should be piped away to a suitable containment device or drain.
The Balston Air Dryers are powered by a 12 VDC power supply through the accompanying 12 VDC trans-
former. Plug the transformer line cord into the dryer rst (see Figure 1), then plug the transformer into the
appropriate 120 VAC outlet.
Regenerate the drying towers for 24 hours prior to initial start-up. To regenerate the drying towers, open the
inlet air supply, shut off the outlet ow from the dryer, and plug the dryer in. This process will cycle the dryer
with 100% purge air.

Bulletin TI-75A20C Installation, Operation and Maintenance Manual
Technical Information Parker Balston 75-A20 Compressed Air Dryer
Parker Hannin Corporation
Industrial Gas Filtration and
Generation Division
Lancaster, NY • 1-716-686-6400
3
Model Number 75-A20 Compressed Air Dryers
Dew Point -100°F (-73°C)
Max Dry (outlet) Air Flow Rate
for Specified Dew Point: {SCFM, (LPM)}
Inlet Pressure 125 psig (8.6 barg) 12.0 (340)
Inlet Pressure 100 psig (6.9 barg) 10.0 (283)
Inlet Pressure 80 psig (5.5 barg) 8.3 (235)
Inlet Pressure 60 psig (4.1 barg) 6.5 (184)
Air Loss for Regeneration {SCFM, (LPM) } (1) 2.5 (71)
Min/Max Inlet Air Pressure 60 psig/125psig (4.1 barg/8.6 barg)
Max Inlet Air Temperature (2) 78°F (25°C)
Pressure Drop at Max Flow Rate 8 psi (0.5 bar)
Inlet/Outlet Port Size 1/4" NPT
Electrical Requirements (3) 120 VAC (12 VDC see Note 3)
Shipping Weight 80 lbs. (36 kg)
Model Number 75-A20
Replacement Filter Cartridges
Filter Cartridges; 1st stage (box of 10) 100-18-DX
Filter Cartridges; 2nd stage (box of 10) 100-18-BX
Moisture Indicator Filter (1 each) 75800
Maintenance Kit (1 Year) MK7525
Specifications and Ordering
Principal
Specifications
Recommended Installation
Figure 2 - Recommended Installation (Schematic)
Notes:
1Total air required = air loss for
regeneration + process demand (up
to max. dry air ow rate).
3Power consumption less than
10 watts. Each dryer is shipped with
a 12 VDC plug-in transformer to
connect to the local electrical supply.
2 Outlet dew point will increase at higher
inlet compressed air temperatures.
Ordering Information

Bulletin TI-75A20C Installation, Operation and Maintenance Manual
Technical Information Parker Balston 75-A20 Compressed Air Dryer
4
Parker Hannin Corporation
Industrial Gas Filtration and
Generation Division
Lancaster, NY • 1-716-686-6400
Copyright© Parker Hannin Corporation 2005, 2011
Printed in U.S.A. Bulletin TI-75A20C
Trouble Shooting
72-130 Pressure Regulator
2206N-1B1-DX Auxiliary Coalescing Prefilter
All troubleshooting activities should be performed by suitable personnel using reason-
able care. To arrange for system service, contact the Technical Services Department at
800-343-4048, 8AM to 5PM Eastern Time (North America only) or email at balstontech-
[e-mail]. For other locations, please contact your local representative.
Warning: To avoid electrical shock, disconnect electrical power before servicing this
product.
Symptom Course of Action
Moisture Indicator Turns Yellow Check Inlet air temperature. If higher than 78°F (26°C), install aftercooler upstream of the dryer.
Check inlet air pressure. Dryer requires 60 psig (4.1 barg) minimum.
Check flow rate. Do not exceed dryer capacity. Install flow controller downstream.
Confirm tower cycling (5 minute cycle time). If not, call factory.
Check electric power source.
Check flow demand. Must match process flow requirements to dryer capacity.
Check inlet filters for particulate clogging; replace if necessary.
Check for leaks in downstream piping and process.
Check prefilter drain(s) for leaks.
Check supply line pressure / 60 psig (4.1 barg) minimum.
Check supply line source (compressor).
Check to make sure all customer installed valves are open.
Check prefilter drain(s) for leaks.
Contact your local representative to arrange Logic Box repair. Please have product Serial Number available.
The serial number location is shown in Figure 1.
High Pressure Drop Through Dryer
(low flow)
Notes:
After a problem has been resolved, the towers may be regenerated by turning on
the inlet air supply, shutting off the outlet ow from the dryer and turning on the
power. This will cycle the dryer with 100% purge air. The dryer should purge for
at least 12 hours to assure complete regeneration.
No Flow Through Dryer
Logic Box Hum (loud and annoying)
Accessories
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Parker Manufacturing Ltd
Gas Separation & Filtration Division EMEA
Dukesway, Team Valley Trading Estate
Gateshead, Tyne & Wear, NE11 0PZ
United Kingdom
Tel: [phone]
www.parker.com/hzd
Parker Hannin Corporation
Industrial Gas Filtration and
Generation Division
4087 Walden Avenue
Lancaster, NY 14086
Tel: [phone] Fax: [phone]
www.parker.com/igfg