280C AIR COMPRESSOR KIT
PART NO. 28021
IMPORTANT:
It is essential that you and any other operator of this
product read and understand the contents of this manual
before installing and using this product.
SAVE THIS MANUAL FOR FUTURE REFERENCE
USER MANUAL
280C Air Compressor Kit
IMPORTANT SAFETY INSTRUCTIONS
CAUTION - To reduce risk of electrical shock or electrocution:
- Do not disassemble. Do not attempt repairs or modifications. Refer to qualified service
agencies for all service and repairs.
- Do not use this product in an area where it can fall or be pulled into water or other liquid.
- Do not reach for this product if it has fallen into liquid.
- Use this compressor with 12-volt DC systems only.
- This product should never be left unattended during use.
WARNING - To prevent injury:
- Never allow children to operate this compressor. Close supervision is necessary when this
compressor is being used near children.
- This compressor will become very hot during and immediately after use. Do not touch any part of
this compressor with bare hands during and immediately after use.
- Do not use this product near flames or explosive materials or where aerosol products are being used.
- Do not operate this product where oxygen is being administered.
- Do not pump anything other than atmospheric air.
- Never use this product while sleepy or drowsy.
- Do not use any tools or attachments without first determining maximum air pressure for that
tool or attachment.
- Never point any air nozzle or air sprayer toward another person or any part of the body.
- This air compressor is equipped with Automatic Reset Thermal Protector, and can automatically restart after the thermal protector resets. Always cut off power source when thermal protector
becomes activated. - Wear safety glasses or goggles when operating this product.
- Use only in well ventilated areas.
INSTALLATION
Please read and follow the installation instructions carefully to avoid injury or damage to the
compressor and your vehicle. Each of our air compressors and parts have been carefully produced
and packaged. Before you begin installation, please familiarize yourself with Installation Parts List
(Fig. 1) of this manual.
Guidelines for Selecting Mounting Location:
The selection of proper mounting location for your air compressor will help ensure a long and
trouble free compressor service life. Please pay close attention to the following guidelines:
1.Select a FLAT, UPRIGHT AND SECURE location where the compressor can be mounted.
2.To maximize air compressor performance, locate compressor as CLOSE TO THE BATTERY
as possible so that length of positive lead wire required is at a minimum. 3. Choose mounting location that is as cool as possible and AWAY FROM HEAT SOURCES.
The cooler the ambient temperature the less chance the compressor will overheat.
4. This compressor is moisture & splash resistant, but NOT WATER PROOF. Do not mount compressor in locations where the unit is likely to come in contact with water.
5. Select compressor mounting location where air line can be routed from compressor air inlet
to remote inlet air filter. Make sure Remote Inlet Air Filter is located in a dry location, away
from water splashes.
6. You will also want to select compressor’s mounting location where the leader hose bracket
can be mounted to secure the 1.5 ft. leader hose.
7. If it is necessary to mount the air compressor farther away from the battery, such as
inside your vehicle or in the bed of your pickup, use a minimum 10 AWG positive lead wire
for remote installation.
8. Do not mount compressor near areas where flammable liquids are stored.
9.Use thread sealant for proper fitting installation. Teflon tape is not recommended.
Properly sealed, recommended torque is 12 to 15 ft. lbs
USER MANUAL
280C Air Compressor Kit
MOUNTING AND WIRING
1. Disconnect ground cable from vehicle’s battery.
2. Temporarily position the air compressor in the location where it will be mounted.
3. Route ground wire to the negative post of the battery or to an appropriate grounding point and cut ground wire to length as needed.
4. Mount air compressor with the four sets of 13/64” (5 mm) bolts, nuts, washers, and locking washers provided. (See Fig. 2 for Mounting Instructions) Use of thread sealant is recommended.
5. NOTE: For Remote Inlet Air Filter Installation, refer to Remote Inlet Air Filter Installation
Instructions included in the Remote Inlet Air Filter Pack.
6. This air compressor comes with 1.5 ft. heavy duty heat resistant leader hose. This leader hose is designed to prolong the life of your air line. Do not remove this leader hose from air compressor.
7. IMPORTANT: Please note, the leader hose that comes with your compressor may have a built-in inline check Valve. DO NOT remove inline check valve from leader hose. 8. Select proper location to mount leader hose with hose bracket provided. Avoid locations where leader hose may become tangled with wires and other hoses.
9. To mount hose bracket, drill hole with 3/16” drill bit and push self–anchoring hose bracket pin into hole. Route leader hose through hose bracket and secure hose by pressing bracket clamp into locked position.
10. To remove hose from the hose bracket, simply press down on the hose clamp release tab to release bracket clamp. (Fig. 3)
11. Connect compressor positive lead wire to one of the leads of your pressure switch. 12. Make sure that your compressor setup is properly fused. For appropriate fuse size, refer to
amp draw of compressor in the Specifications section of this manual. 13. Always locate fuse as close as possible to power source. 14. Before connecting to power source, re-check to make sure that all connections are
properly connected.
15. Connect and test compressor system by running the compressor for a short time to build up pressure in your air tank.
16. Once air pressure reaches preset cut out pressure of your pressure switch, the compressor
will shut off. Inspect all air line connections for leaks with soap and water solution.
If a leak is detected, the air line may not be cut squarely or pushed all the way in. Tighten connections if needed.
(Fig. 1) Standard 280C Air Compressor Kit Installation Parts List:
REDUCER
A
B
CDE
F
G
A. Hose Bracket (1pc)
B. Mounting Bolts (4pcs)
C. Flat Washers (8pcs)
D. Locking Washers (4pcs)
E. Nuts (4pcs)
F. Remote Inlet Air Filter with Filter Element (1pc)
G. Screws (2pcs)
USER MANUAL
280C Air Compressor Kit
(Fig. 2) Compressor B
Mounting Hardware C
B. Mounting Bolt
C. Flat Washer
D. Locking Washer
E. Nut
H. Vibration Isolator
H
C
D
E
(Fig. 3) Leader Hose Bracket
RECU
I
I. Hose Clamp
J. Clamp Release Tab
K. Self Anchoring Pin
J
K
OPERATING INSTRUCTIONS
1.IMPORTANT: Always operate the compressor at or below the MAXIMUM PRESSURE RATING of
the compressor. Please refer to Application & Specifications Sections of this manual for details.
2. Always observe the MAXIMUM DUTY CYCLE of the air compressor. Refer to Compressor
Application and Specifications Sections of this manual for details. Operation exceeding
maximum pressure ratings and/or duty cycle will result in damage to the air compressor. 3. Your air compressor is equipped with an AUTOMATIC THERMAL OVERLOAD PROTECTOR. This feature is designed to protect the air compressor from overheating and causing permanent
damage to your air compressor. The thermal overload protector will automatically cut power to
your air compressor should the internal operating temperature of the air compressor rise above
safe levels during excessive use.
4. Should at any time during use, your air compressor automatically shuts off; do not attempt to
restart the air compressor. Turn off power and allow unit to cool for about 30 minutes. This will
allow the Thermal Overload Protector to reset so you can safely resume use of the air compressor.
5. To prevent discharge of your vehicle’s battery, and enhance performance, keep the vehicle’s engine running while using the compressor.
6. Only operate compressor in well ventilated areas.
7. The use of a relay is strongly recommended for installation of this compressor, but is not included.
(40-amp relay value or higher)
Pressure Switch
86
Fused
12-Volt
87
30
85
To Ground
RELAY WIRING SCHEMATIC
USER MANUAL
Compressor
(+) Lead
280C Air Compressor Kit
MAINTENANCE & REPAIRS
1.Periodically check all electrical and fitting connections. Clean and tighten as needed. 2. Periodically check all mounting screws. Tighten as needed.
3. Replace air filter element periodically. Replacement frequency depends on operating frequency
and operating environment. For frequent use in dusty environments, we recommend that you
replace air filter element at least once a month. 4. Regularly clean dust and dirt from compressor cooling fins and motor housing.
5. Your air compressor is equipped with permanently lubricated, maintenance-free motor.
Never try to lubricate compressor.
6. All repairs should be performed by Manufacturer or Manufacturer’s Authorized Service
Agencies only. CAUTION:
Never touch the air compressor or fittings connected to the air compressor with bare hands
during or immediately after use. Leader hose and fittings connected to Leader Hose will become
very hot during and after use. If necessary, wear heat resistant gloves to handle fittings, air line,
and leader hose.
SPECIFICATIONS
280C AIR COMPRESSOR PART NUMBERS:
• Part No. 28021 / 280C Air Compressor (CE Spec.)
Motor Voltage:
Max. Current Consumption:
Recommended Fuse:
Motor Type:
Horse Power:
Max. Working Pressure:
Max. Duty Cycle (@72ºF & 100 PSI):
Minutes On/Off (@72ºF & 100 PSI): Max. Restart Pressure:
Max. Ambient Temperature:
Min. Ambient Temperature:
Auto. Reset Thermal Protection:
Dimensions: Net Weight:
12 volts
20 amps
30 Amps
Perm. Magnetic
1/4
150 PSI
30%
18 On / 42 Off
200 PSI
158ºF
-40ºF
Yes
7.8”L x 3.95”W x 6.35”H
6.95 Lbs.
USER MANUAL
280C Air Compressor Kit
COMPRESSOR APPLICATION GUIDE
To ensure that you get the highest level of satisfaction from your compressor performance, refer to
information below:
VIAIR COMPRESSOR REFERENCE CHART
COMPRESSOR SERIES
DUTY CYCLE
(100 PSI @ 72°F)
090 SERIES
9%
092 SERIES
9%
095 SERIES
9%
097 SERIES
10%
098 SERIES
10%
100 SERIES
15%
250 IG SERIES
100%
275 SERIES
25%
280 SERIES
30%
325 SERIES
33%
330 IG SERIES
100%
350 SERIES
100%
380 SERIES
100% *55%
400 SERIES
33%
420 SERIES
33%
444 SERIES
100% *50%
450 SERIES
100%
450 IG SERIES
100%
460 SERIES
100%
480 SERIES
100% *50%
MAX. WORKING PRESSURE
120 PSI
120 PSI
120 PSI
130 PSI
130 PSI
130 PSI
150 PSI
150 PSI
150 PSI
150 PSI
150 PSI
150 PSI
200 PSI
150 PSI
150 PSI
200 PSI
150 PSI
150 PSI
150 PSI
200 PSI
*Duty Cycle at 200 PSI and 72°F.
ABOUT COMPRESSOR DUTY CYCLE:
Duty cycle refers to the amount of time a compressor can be
operated in a given time period at 100
PSI, and a standard ambient temperature of 72° F. It is commonly expressed in percentage format:
Compressor on time ÷ (on time + off time) = Duty Cycle %.
ONE-HOUR DUTY CYCLE
MINUTES ON /
(100 PSI @ 72°F)MINUTES OFF
9%
5 Min. On / 55 Min. Off
10%
6 Min. On / 54 Min. Off
15%
9 Min. On / 51 Min. Off
20%
12 Min. On / 48 Min. Off
25%
15 Min. On / 45 Min. Off
30%
18 Min. On / 42 Min. Off
33%
20 Min. On / 40 Min. Off
50%
30 Min. On / 30 Min. Off
100%
1 Hour Run Time
NOTE: All compressors, regardless of rated duty cycle, require sufficient rest time in between cycles
to allow for partial or complete heat dissipation. Heat dissipation rates may vary depending on
ambient temperatures and operating conditions.
ABOUT RATED WORKING PRESSURE:
To ensure trouble free service life of your compressor, always operate compressor within rated
working pressure of the compressor. Never use a pressure switch with a higher cut-off pressure than
compressor’s rated working pressure.
USER MANUAL
280C Air Compressor Kit
TROUBLESHOOTING GUIDE:
PROBLEM:
POSSIBLE CAUSE(S)
CORRECTIVE ACTION
Tank pressure drops when 1. Loose drain cock
compressor(s) shut off
2. Check valve leaking
3. Loose connections
1. Tighten drain cock
2. Replace check valve or
compressor
3. Check all connections with
soap and water solution
and tighten
Compressor runs
continuously and air flow
lower than normal
1. Excessive air usage
2. Loose connections
3. Worn piston ring or inlet
valve.
4. Clogged air filter element
1. Decrease air usage
2. Check all connections with
soap and water solution
and tighten.
3. Replace compressor
4. Replace air filter element
Compressor runs
continuously causing
safety valve (if equipped)
to open
Excessive moisture in
discharge
1. Faulty pressure switch
2. Defective safety valve
1. Replace pressure switch
2. Replace safety valve
1. Excessive water in air tank
2. High humidity
1. Drain tank, tilt tank to drain.
Drain tank more frequently
2. Move compressor to area
with less humidity, or use
water separator
Compressor will not run
1. No power, or power switch
in OFF position
2. Blown fuse
3. Motor overheats
4. Faulty pressure switch
(if hooked up to a
pressure switch).
1. Make sure compressor
switch is ON 2. Disconnect compressor
from power source, replace
fuse. (Refer to Specifications
section for correct
fuse amperage)
3. Let compressors cool off for
about 30 minutes to allow
thermal overload switch to reset.
4. Replace pressure switch
Thermal overload
protector cuts out
repeatedly
1. Lack of proper ventilation or
ambient temperature is too high
2. Compressor valves failed
1. Move compressor to well
ventilated area, or area with
lower ambient temperature
2. Replace compressor
Excessive knocking
or rattling
1. Loose mounting bolts
2. Worn bearing on eccentric or
motor shaft
3. Cylinder or piston ring is worn
1. Tighten bolts
2. Replace bearing or
piston assembly
3. Replace piston or compressor
CAUTION: NEVER DISASSEMBLE COMPRESSOR WHILE
COMPRESSOR IS PRESSURIZED.
USER MANUAL
280C Air Compressor Kit
AMERICAN WIRE GAUGE GUIDE 12-VOLT:
Amp Draw
Length of wire from battery to
compressor (in feet)
5
10
15
20
25
30
40
50
60
5
16
16
16
14
14
12
12
10
10
10
16
14
12
10
10
10
8
6
6
15
16
12
10
10
8
8
6
6
4
20
14
10
10
8
6
6
6
4
4
SINGLE “C” MODEL
COMPRESSOR WIRING DIAGRAM
Wiring Diagram:
(Fuse Not Included)
12V 40A
Relay
87
30
85
86
Fuse
-
+
Battery
To Keyed
Power Source
Pressure
Switch
LIMITED WARRANTY:
15
Edelman
VIAIR
Corporation warrants this product, when properly installed and under normal conditions of
Irvine,
CAbe
92618
use, to
free from defects in workmanship and materials for a period of one year from its original
949-585-0011
date
of
purchase.
www.viaircorp.com To receive warranty service or repair, please contact VIAIR Corporation. Rev.1
Returns should be made within one year of the date of purchase, after a Return Goods Authorization
(RGA) number has been assigned by VIAIR Corporation. To obtain RGA, fax a copy of your receipt
to (949) 585-0188. For complete warranty details, please visit: www.viaircorp.com/warranty
PLEASE NOTE:
THIS WARRANTY COVERS PRODUCT DEFECTS ONLY; IT DOES NOT COVER INCIDENTAL
OR CONSEQUENTIAL DAMAGES AS RESULT OF MISUSE OR ABUSE.
15 EDELMAN • IRVINE, CA 92618
TEL: (949) 585-0011 • FAX: (949) 585-0188
www.viaircorp.com
USER MANUAL
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