VIAIR 400H User manual

MODEL NUMBER:
400H – HARDMOUNT AIR COMPRESSOR
450H – HARDMOUNT AIR COMPRESSOR
IMPORTANT:
It is essential that y u and any
ther perat r f this pr duct read
and understand the c ntents f
this manual bef re installing and
using this pr duct.
SAVE THIS MANUAL FOR FUTURE REFERENCE
400H
450H
USER MANUAL
IMPORTANT SAFETY INSTRUCTIONS
CAUTION - T reduce risk f electrical
sh ck r electr cuti n:
 D n t disassemble. D n t attempt repairs r
m dificati ns. Refer t qualified service agencies
f r all service and repairs.
•D n t use this pr duct in r area where it can fall
r be pulled int water r ther liquids.
•D n t reach f r this pr duct if it has fallen int liquid.
•Use this c mpress r with 12-v lt DC systems nly.
•This pr duct sh uld never be left unattended
during use.
WARNING - T prevent injury:
•Never all w children t perate this c mpress r.
Cl se supervisi n is necessary when this
c mpress r is being used near children.
•This c mpress r will bec me very HOT during
and immediately after use. D n t t uch any part
f this c mpress r with bare hands ther than the
ON/OFF switch, during and immediately after use.
•D n t use this pr duct near flames r expl sive
materials r where aer s l pr ducts are being used.
•D n t perate this pr duct where xygen is
being administered.
•D n t pump anything ther than atm spheric air.
•Never use this pr duct while sleepy r dr wsy.
•D n t use any t ls r attachments with ut first
determining maximum air pressure f r that t l r
attachment.
•Never p int any air n zzle r air sprayer t ward
an ther pers n r any part f the b dy.
•This air c mpress r is equipped with Aut matic Reset
Thermal Pr tect r, and can aut matically restart after the
thermal pr tect r resets. Always cut ff p wer s urce
when thermal pr tect r bec mes activated.
•Wear safety glasses r g ggles when perating
this pr duct.
•Use nly in well ventilated areas.

INSTALLATION
This air c mpress r is ideal f r m unting under the h d r even inside
y ur vehicle. The c mpact size f this c mpress r requires minimal
space, and il-less design permits m unting in many different areas f
y ur vehicle. Please read and f ll w these Installati n Instructi ns
carefully t av id injury r damage t the c mpress r r y ur vehicle.
Each f ur air c mpress rs and parts have been
carefully pr duced and packaged. Bef re y u begin
installati n, please familiarize y urself with Installati n
Parts List (Fig. 1) f this manual.
Guidelines f r Selecting M unting L cati n:
The selecti n f pr per m unting l cati n f r y ur air
c mpress r will help ensure a l ng and tr uble free
c mpress r service life. Please pay cl se attenti n t
the f ll wing guidelines:
1. Select a FLAT AND SECURE l cati n where the
c mpress r can be m unted by using the
m unting brackets pr vided.
2. Ch se a l cati n where the 10 ft. p sitive wire
pr vided is l ng en ugh t reach the battery and
where there is an appr priate chassis gr unding
p int t be reached by the 2ft. gr und wire.
3. T maximize air c mpress r perf rmance and
minimize amp draw, l cate c mpress r as CLOSE
TO THE BATTERY as p ssible s that the length f
p sitive lead wire required is at a minimum.
4. Ch se a m unting l cati n that is AS COOL AS
POSSIBLE AND AWAY FROM HEAT SOURCES.
The c ler the ambient temperature (air
temperature surr unding the air c mpress r), the
less chance the c mpress r will verheat.
5. This c mpress r is m isture & splash resistant,
but NOT WATERPROOF. DO NOT MOUNT
COMPRESSOR IN LOCATIONS WHERE THE UNIT
IS LIKELY TO COME IN CONTACT WITH WATER.
6. Select a c mpress r m unting l cati n where air line
can be r uted fr m c mpress r air inlet t rem te
inlet air filter. Make sure Rem te Inlet Air Filter is
l cated in a dry l cati n, away fr m water splashes.
7. Y u will als want t select a c mpress r
m unting l cati n where the leader h se bracket
can be m unted t secure the 1.5 ft. leader h se.
8. If it is necessary t m unt the air c mpress r further
away fr m the battery, such as inside y ur vehicle r
in the bed f y ur pickup, the 10ft. p sitive wire may
n t be l ng en ugh. Use a l nger minimum 8 AWG
p sitive lead wire f r rem te installati n.
9. D n t m unt c mpress r near areas where
flammable liquids are st red.
MOUNTING AND WIRING
1. Disc nnect gr und cable fr m vehicle’s battery.
2. Temp rarily p siti n the air c mpress r in the l cati n where
it will be m unted. R ute the p sitive wire t the p sitive p st
f the battery. Measure and cut p sitive wire t the
appr priate length and use appr priate inline fuse.
3. R ute gr und wire t the negative p st f the battery
r t an appr priate chassis gr unding p int and cut
gr und wire t length as needed.
4. M unt the air c mpress r by using the pair f anti-
vibrati n m unting brackets and f ur sets f
13/64” (5mm) b lts, nuts, washers, and l cking
washers pr vided. Use 13/64” drill bit t drill h les f r
the first set f brackets. M unt this first bracket with
screws, flat washers, l cking washers and nuts
pr vided. (Refer t Fig. 2 f r placement f washers.)
5. Place c mpress r int m unted bracket. Place sec nd set f
bracket under the air c mpress r, make sure that the
c mpress r sits snuggly in between the tw brackets. Mark
ff h les t be drilled using the sec nd set f brackets as
guides. Drill h les, and place c mpress r snugly between
brackets and m unt the sec nd bracket.
6. Refer t Rem te Air Filter Installati n Instructi ns
included in the Rem te Inlet Air Filter Pack f r
installati n f Rem te Inlet Air Filter.
7. This air c mpress r c mes equipped with a 1.5 ft. heavy duty
heat resistant leader h se with _-inch fittings. This leader
h se is designed t pr vide easy access f r air h se
attachment and t pr l ng the life f y ur extensi n h se as
well as minimizing wear t the c mpress r air utlet. D n t
rem ve this leader h se fr m the air c mpress r.
8. Please n te, the leader h se that c mes with y ur
c mpress r may have a built-in inline check valve installed.
D n t rem ve inline check valve fr m leader h se.
9. Select a pr per l cati n t m unt leader h se with h se
bracket pr vided. Av id l cati ns where leader h se
may bec me tangled with wires and ther h ses.
10. T m unt h se bracket, drill h le with 3/16” drill bit
and push self–anch ring h se bracket pin int h le.
R ute leader h se thr ugh h se bracket and secure
h se by pressing bracket clamp int l cked p siti n.
11. T rem ve h se fr m the h se bracket, simply press
d wn n the h se clamp release tab t release
bracket clamp. (Fig. 3)
12. Attach gr und wire t the negative p st f the battery r
chassis gr unding p int. Check t make sure that the air
c mpress r’s ON/OFF switch is in the OFF p siti n.
Attach p sitive wire t p sitive terminal f the battery.
13. Re-check t make sure that all c nnecti ns are made
securely.

(Fig. 1) 400H/450H Hardm unt Air
C mpress r Installati n Parts List:
a. e. i. m.
b. f. j.
c. g. k.
d. h. l.
a. H se Bracket (1)
b. M unting B lts (4)
c. Flat Washers (8)
d. L cking Washer (4)
e. Nuts (4)
f. 1/4” F x 3/8” Tube Fitting (1)
g. 1/4” M x 3/8” Tube Fitting (1)
h 3/8” Air Line (1)
i. Air Line Clips (3)
j. Screws (3)
k. P sitive (Red) Ring Terminal
l. Gr und (Black) Ring Terminals (2 Sizes)
m. Rem te Inlet Air Filter with Filter Element
(1)
(Fig. 2) C mpress r M unting Hardware
b
c
Pre-Installed Rubber Bushing
Mounting Plate
Pre-Installed Rubber Bushing
c
d
e
b. M unting B lt
c. Flat Washer
d. L cking Washer
e. Nut
(Fig. 3) Leader H se Bracket
Hose Clamp
Clamp Release Tab
elf Anchoring Pin
OPERATING INSTRUCTIONS
IMPORTANT:
1. Always perate the c mpress r at r bel w the
MAXIMUM PRESSURE RATING f the c mpress r.
Refer t C mpress r Applicati n and Specificati ns
secti ns f this manual f r details.
2. Always bserve the MAXIMUM DUTY CYCLE f the air
c mpress r. Refer t C mpress r Applicati ns and
Specificati ns secti ns f this manual f r details.
Operati ns exceeding maximum pressure ratings
and/ r duty cycle will result in damage t air
c mpress r.
3. Y ur air c mpress r is equipped with an A U T O M A
T I C T H E R M A L O V E R L O A D PROTECTOR.
This feature is designed t pr tect the air
c mpress r fr m verheating and causing
permanent damage t y ur air c mpress r. The
thermal verl ad pr tect r will aut matically cut
p wer t y ur air c mpress r sh uld the internal
perating temperature f the air c mpress r rise
ab ve safe levels during excessive use.
4. Sh uld at any time during use, y ur air
c mpress r aut matically shuts ff; d n t
attempt t restart the air c mpress r. Turn p wer
switch t the air c mpress r t the OFF p siti n.
The aut matic thermal verl ad pr tect r will
aut matically reset when internal temperature f
the air c mpress r dr ps bel w safe levels. All w
air c mpress r t c l ff f r ab ut 30 minutes,
bef re resuming use f the air c mpress r.
5. Keep the vehicle engine running while using the
air c mpress r t prevent discharge f y ur
vehicle’s battery.
6. ONLY OPERATE THE AIR COMPRESSOR IN
WELL-VENTILATED AREAS.
7. C mpress r perf rmance is als enhanced when
perating c mpress r with vehicle’s engine running.

TIRE INFLATION
This air c mpress r c mes with 1.5 feet heavy duty heat-resistant
leader h se with 1/4” industrial series quick c nnect stud. By
attaching an air h se with 1/4” industrial series quick c upler t
the leader h se, y ur air c mpress r is ready t inflate tires. Read
and f ll w tire inflati n instructi ns carefully t av id pers nal
injury and damage t air c mpress r r vehicle.
1. Use heat-resistant, minimum 200PSI-rated w rking pressure
extensi n h se. D n t use aftermarket h ses with less than
200PSI w rking pressure. S me aftermarket h ses may n t be
suitable f r use with this air c mpress r due t heat and
pressure typically generated by this type f air c mpress rs.
2. Use f ur c nvenient 25ft. extensi n c il h se with in-
line deflat r and Built-in Pressure Gauge is
rec mmended
(Part N . 00025, 5-in-1 Inline Inflat r/Deflat r).
3. Use f a cl se-ended tire chuck will cause excessive
pressure buildup if tire chuck is n t attached t tire valve
stem while air c mpress r is in perati n. Always use an
Open-Ended tire chuck such as the tire chuck equipped
n the Inflat r/Deflat r C il H se (P/N 00025) f r tire
inflati n.
4. Always inflate tires t manufacturer’s rec mmended tire
pressures. Exercise extreme cauti n when driving with aired
d wn tires. Re-inflate tires bef re high speed r ad way travel.
MAINTENANCE & REPAIRS
1. Peri dically check all electrical and fitting
c nnecti ns. Clean and tighten r repair as needed.
2. Peri dically check all m unting b lts. Tighten as needed.
3. Replace air filter element peri dically. Replacement
frequency depends n perating frequency and
perating envir nment. F r frequent use in dusty
envir nment, we rec mmend that y u replace air filter
element at least nce a m nth.
4. Regularly clean dust and dirt fr m c mpress r
c ling fins and m t r h using.
5. Y ur air c mpress r is equipped with a permanently
lubricated, maintenance-free m t r. Never try t
lubricate c mpress r.
6. All repairs sh uld be perf rmed by Manufacturer r
Manufacturer’s Auth rized Service Agencies nly.
CAUTION:
Never t uch the air c mpress r r fittings c nnected t
the air c mpress r, with bare hands during r
immediately after usage. The leader h se and fittings
c nnected t the leader h se will bec me very HOT
during and after use. If necessary, wear heat resistant
gl ves t handle fittings, air line, and leader h se.

SPECIFICATIONS
Part No. 40042 / 400H Air Compressor
M t r V ltage: 12 v lts
Max. Current C nsumpti n: 30 amps
M t r Type: Permanent
Magnetic
H rse P wer: 4-Jan
Max. W rking Pressure: 150 PSI
Max. Duty Cycle: 33%
(Min. On/Off @72ºF & 100 PSI) 15 On / 30 Off
Max. Restart Pressure: 200 PSI
Max. Ambient Temperature: 158°F
Min. Ambient Temperature: -40°F
Fuse: 40 amps
Aut . Reset Thermal Pr tecti n: Yes
H using: M isture & Dust
Resistant
Dimensi ns: 11.25”x4.0”x7.0”
Net Weight: 8 lbs.
Part No. 45042 / 450H Air Compressor
M t r V ltage: 12 v lts
Max. Current C nsumpti n: 23 amps
M t r Type: Permanent
Magnetic
H rse P wer: 4-Jan
Max. W rking Pressure: 150 PSI
Max. Duty Cycle : 100%
(Min. On/Off @ 72ºF & 100 PSI) C ntinu us
Max. Restart Pressure: 200 PSI
Max. Ambient Temperature: 158°F
Min. Ambient Temperature: -40°F
Fuse: 30 amps
Aut . Reset Thermal Pr tecti n: Yes
H using: M isture & Dust
Resistant
Dimensi ns: 12.75”x4.0”x7.0”
Net Weight: 9.75 Lbs

TROUBLESHOOTING CHART
PROBLEM POSSIBLE CAUSE(S) CORRECTIVE ACTION
C mpress r 1. N p wer, r switch in OFF p siti n 1. Make sure c mpress r switch is ON
will n t run 2. Bl wn fuse 2. Disc nnect c mpress r fr m p wer
s urce, replace fuse (Refer t
Specificati ns secti n f r c rrect fuse)
3. M t r verheats 3. Let c mpress r c l ff f r ab ut 30
Minutes s thermal verl ad switch will
reset.
Thermal 1. Lack f pr per ventilati n r ambient 1. M ve c mpress r t well ventilated area,
Overl ad Pr tect r temperature is t high r area with l wer ambient temperature
cuts ut repeatedly 2. C mpress r valves failed 2. Repair r replace c mpress r
Excessive 1. W rn bearing n eccentric r m t r 1. Repair r replace c mpress r
kn cking r rattling shaft
2. Cylinder r pist n ring is w rn 2. Repair r replace c mpress r
C mpress r air fl w 1. W rn pist n ring r inlet valve 1. Repair r replace c mpress r
l wer than n rmal,
r can n t pump t
higher pressures
LIMITED WARRANTY
VIAIR C rp rati n warrants this pr duct, when pr perly
installed and under n rmal c nditi ns f use, t be free fr m
defects in w rkmanship and materials f r a peri d f ne
year fr m pr vided date f purchase. T receive a
replacement r f r repairs, return the c mplete unit t
retailer fr m wh m it was purchased al ng with pr f f
purchase.
Returns sh uld be made within the time peri d and
c nditi ns f the retailer’s p licy f r exchanges. If y u are
unable t c ntact y ur dealer, c ntact VIAIR directly f r
repairs r replacement at ur pti n.
PLEASE NOTE:
THIS WARRANTY COVERS PRODUCT DEFECTS
ONLY; IT DOES NOT COVER INCIDENTAL OR
CONSEQUENTIAL DAMAGES AS RESULT OF
MISUSE OR ABUSE.