VIAIR 480C Dual - Manual (Page 3)

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 each 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
Instruction included in the Remote Inlet Air Filter Pack.
6. Your air compressors come with heavy duty heat-resistant leader hose with 3/8” fittings. This
leader hose is designed to prolong the life of your air line. Do not remove the leader hoses from
the air compressors.
7. IMPORTANT: Please note, the leader hose that came 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. Both compressors will pull no more
than 40 amps peak.
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 made properly.
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.
Repair connections as needed.
(Fig. 1) 480C Compressor Installation Parts List:
A. Hose Bracket (1pc) x2
B. Mounting Bolts (4pcs) x2
C. Flat Washers (8pcs) x2
D. Locking Washer (4pcs) x2
E. Nuts (4pcs) x2
F. 3/8” NPT F x 1/2” Barbed Fitting (1pc) x2
G. 3/8” NPT M x 1/2” Barbed Fitting (1pc) x2
H. Air Line Clips (3pcs) x2
I. Screws (3pcs) x2
J. Remote Inlet Air Filter with Filter Element (1pc) x2
(Fig. 2) Compressor
Mounting Hardware
B. Mounting Bolt
C. Flat Washer
D. Locking Washer
E. Nut
K. Vibration Isolator
USER MANUAL
480C DUAL PERFORMANCE VALUE PACK
B A C D E
F G
H
I
J
(Fig. 3) Leader Hose Bracket
L. Hose Clamp
M. Clamp Release Tab
N. Self Anchoring Pin
B
C
C
D
E
K
L
M
N