HornBlasters MC-127H User manual

FAST-FILL 120 PSI
AIR SOURCE KIT
25% Duty Compressor on
1.5 Gallon Air Tank
PART NO. MC-127H
WARNING: To ensure the longevity of your system,
reading and following these instructions are
recommended before installation. Make sure to drain
the moisture from your tank on a regular basis.
SAVE THIS MANUAL FOR FUTURE REFERENCE
USER MANUAL

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 or area where it can fall or be
pulled into water or other liquids.
-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 injuries:
-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.
-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 an 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.
120 PSI FAST-FILL AIR SOURCE KIT
IMPORTANT SAFETY INSTRUCTIONS:
USER MANUAL

Please read and follow the Installation Instructions
carefully to avoid injury or damage to the
compressor or your vehicle.
Selecting a Mounting Location:
The selection of a proper mounting location for your air source kit will
help ensure a long and trouble free service life.
Please pay close attention to the following guidelines:
1. Select a FLAT, UPRIGHT AND SECURE location where the
air source kit can be mounted. (DO NOT install unit upside
down or on its side)
2. To maximize air compressor performance, locate compressor
ȲɄȚȣȦȪȜȫȦȫȟȜșȘȫȫȜȩȰȲɄɁɀɄɄȺȳȽȶɄɀɅȹȲɅȽȶȿȸɅȹɀȷ
ɁɀɄȺɅȺɇȶȽȶȲȵɈȺɃȶɃȶɂɆȺɃȶȵȺɄȲɅȲȾȺȿȺȾɆȾ
3. CȹɀɀɄȶȾɀɆȿɅȺȿȸȽɀȴȲɅȺɀȿɅȹȲɅȺɄȲɄȴɀɀȽȲɄɁɀɄɄȺȳȽȶ
ȲȿȵȘȮȘȰȝȩȦȤȟȜȘȫȪȦȬȩȚȜȪȫȹȶȴɀɀȽȶɃɅȹȶȲȾȳȺȶȿɅ
ɅȶȾɁȶɃȲɅɆɃȶɅȹȶȽȶɄɄȴȹȲȿȴȶɅȹȶȴɀȾɁɃȶɄɄɀɃɈȺȽȽɀɇȶɃȹȶȲɅ
4.ȫȹȶȴɀȾɁɃȶɄɄɀɃȺɄȾɀȺɄɅɆɃȶɄɁȽȲɄȹɃȶɄȺɄɅȲȿɅȳɆɅ
ȥȦȫȮȘȫȜȩȧȩȦȦȝțɀȿɀɅȾɀɆȿɅȲȺɃɄɀɆɃȴȶȼȺɅȺȿȽɀȴȲɅȺɀȿɄ
ɈȹȶɃȶɅȹȶɆȿȺɅȺɄȽȺȼȶȽɊɅɀȴɀȾȶȺȿȴɀȿɅȲȴɅɈȺɅȹɈȲɅȶɃ (i.e,
underneith the vehicle)
5. If it iɄȿȶȴȶɄɄȲɃɊɅɀȾɀɆȿɅɅȹȶȲȺɃȴɀȾɁɃȶɄɄɀɃȷɆɃɅȹȶɃȲɈȲɊ
ȷɃɀȾɅȹȶȳȲɅɅȶɃɊɄɆȴȹȲɄȺȿɄȺȵȶɊɀɆɃɇȶȹȺȴȽȶɀɃȺȿɅȹȶȳȶȵɀȷ
ɊɀɆɃɁȺȴȼɆɁɆɄȶȲȾȺȿȺȾɆȾȘȮȞɁɀɄȺɅȺɇȶȽȶȲȵɈȺɃȶȷɀɃ
ɃȶȾɀɅȶȺȿɄɅȲȽȽȲɅȺɀȿ
6. Do ȿɀɅȾɀɆȿɅȲȺɃɄɀɆɃȴȶȼȺɅȿȶȲɃȲɃȶȲɄɈȹȶɃȶȷȽȲȾȾȲȳȽȶ
ȽȺɂɆȺȵɄȲɃȶɄɅɀɃȶȵ
FAST-FILL 120 PSI AIR SOURCE KIT
INSTALLATION:
USER MANUAL

USER MANUAL
FAST-FILL 120 PSI AIR SOURCE KIT
MOUNTING AND WIRING:
1. Disconnect ground cable from vehicle’s battery.
2. Temporarily position the air source kit in the location
where it will be mounted.
3. Mount air source kit at tank leg mounts with the four
grommets, and four sets of bolts, nuts, washers,
and locking washers provided. Use of thread locker
is recommended.
4. Route 1/2-inch O.D. air line to the 1/2-inch compression
fitting and make your air line connection. Tighten
compression fitting nut securely using a wrench.
5. Connect ground (Black) wire to a clean ground,
(preferably a negative post of battery) and secure with
proper hardware.
6. Connect positive (Red) lead wire from pre-installed
pressure switch to a fuse holder (25-amp minimum).
7. Once the kit is properly fused as close as possible to the
power source, connect and test compressor system by
running the compressor for a short time to build up
pressure in your air tank.
8. Once air pressure reaches preset cut out pressure of
your pressure switch (90 PSI cut-on, 120 PSI cut-off), the
compressor will shut off automatically. 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.

USER MANUAL
FAST-FILL 120 PSI AIR SOURCE KIT
OPERATING INSTRUCTIONS:
1. IMPORTANT: Always operate the compressor 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 Applications
and Specifications Section of this manual for details.
Operation exceeding maximum pressure ratings and or duty
cycle will result in damage to 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
causing permanent damage to your air compressor.
The thermal overload protector will automatically cut off
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 air
compressor. Turn power switch to the air compressor to the
OFF position, or remove the in-line fuse. The automatic
thermal overload protector will automatically reset when
internal temperature of the air compressor drops below safe
levels. After allowing the air compressor to cool off for about
30 minutes, you can safely resume use of the air compressor
by turning on the air compressor.
5. To prevent discharge of your vehicle’s battery, we strongly
recommend that you keep the vehicle’s engine running while
using the air compressor. Compressor performance is
enhanced when operating compressor with vehicle’s engine
running.
6. IMPORTANT: ONLY OPERATE THE AIR
COMPRESSOR IN WELL-VENTILATED AREAS.

FAST-FILL 120 PSI AIR SOURCE KIT
AIR TANK PRECAUTIONS:
IMPORTANT:
a. The air source kit air tank is rated for 150 PSI maximum
working pressure. Do not overfill. Overfilling may result
in death or serious injury.
b. Tank is not to be used as a breathing device.
c. Always wear ANSI approved safety glasses when
operating air tank.
d. Bleed pressure from tank after each use, and before
servicing or adding attachments.
e. Use only attachments or tools rated for 150 PSI working
pressure or more.
DRAIN TANK OFTEN TO REMOVE CONDENSATE. FAILURE
TO DRAIN TANK WILL ALLOW TANK TO RUST INTERNALLY.
a. To remove any accumulated condensation inside the tank,
bleed pressure from tank until pressure is approximately
5 PSI to 20 PSI.
b. Drain water from tank by opening the drain cock drain valve.
c. If drain cock is plugged, release all air pressure from tank,
remove drain valve and clean, then reinstall.
d. After condensate has been drained, close the drain cock.
USER MANUAL
IMPORTANT: Observe air tank Date of Manufacture
(stamped on tank leg). Replace air tank 2 to 5 years from date
air tank was first used, or use the date of manufacture as a
reference. Your adherence to air tank draining guidelines will
determine the replacement date of your air tank. RUSTED
TANKS CAN FAIL CAUSING EXPLOSIONS OR FATAL
INJURIES. Discard tank immediately if tank is rusted.
NOTE: When using a safety pressure relief valve, point
the safety pressure relief valve away from your body. Use
the pull ring on the safety relief valve; open the relief
valve to vent any pressure inside the tank before
attempting to service tank.

USER MANUAL
FAST-FILL 120 PSI AIR SOURCE KIT
COMPRESSOR APPLICATION GUIDE:
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
9%
10%
15%
20%
25%
30%
33%
50%
100%
MINUTES ON / MINUTES OFF
5 Min. On / 55 Min. Off
6 Min. On / 54 Min. Off
9 Min. On / 51 Min. Off
12 Min. On / 48 Min. Off
15 Min. On / 45 Min. Off
18 Min. On / 42 Min. Off
20 Min. On / 40 Min. Off
30 Min. On / 30 Min. Off
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.
SPECIFICATIONS:
12 Volts
18 Amps
30 Amps
Perm. Magnetic
1/4
120 PSI
30%
15 On / 45 Off
40 Minutes
158°F
275C AIR COMPRESSOR
Motor Voltage:
Max. Current Consumption:
Recommended Fuse:
Motor Type:
Horse Power:
Max. Working Pressure:
Max. Duty Cycle (@72°F & 100 PSI):
Minutes On/Off (@72ºF & 100 PSI):
Continuous Use (@72ºF & 40 PSI):
Max. Ambient Temperature:
Min. Ambient Temperature:
Auto. Reset Thermal Protection:
-40°F
Yes

Excessive moisture in discharge 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 air line filter.
Compressor will not run 1. No power, or power switch
in OFF position
2. Blown fuse 3. Motor overheats 4. Faulty pressure switch.
1. Make sure compressor switch is ON 2. Disconnect compressors 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 reset.
4. Replace pressure switch
Thermal overload protector
cuts out repeatedly
1. Lack of proper ventilation or
ambient temperature too high
2. Compressor valves failed
1. Move compressor to well ventilated area,
or area with lower ambient temperature
2. Repair or 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 mounting bolts 2. Repair or replace compressor 3. Repair or replace compressor
CAUTION: NEVER DISASSEMBLE COMPRESSOR WHILE COMPRESSOR IS PRESSURIZED.

Tank pressure drops when compressor(s) shut off
1. Loose drain cock 2. Check valve leaking 3. Loose connections
1. Tighten drain cock 2. Replace check valve or compressor(s) 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 wit soap and
water solution and tighten.
3. Repair or replace compressor 4. Replace air filter element
Compressor runs continuously causing safety valve (if equipped) to open
1. Bad pressure switch 2. Defective safety valve
1. Replace pressure switch 2. Replace safety valve
PROBLEM: POSSIBLE CAUSE(S) CORRECTIVE ACTION
TROUBLESHOOTING GUIDE:

LIMITED WARRANTY:
HornBlasters, Inc. warrants this product, when properly installed and
under normal conditions of use, to be free from defects in
workmanship and materials for a period of one year from its original
date of purchase. To receive warranty service or repair, please
contact HornBlasters, Inc service department. 
Warranty claims should be made within one year of the date of
purchase, after a Return Merchandise Authorization (RMA) number
has been assigned by HornBlasters, Inc. To obtain RMA, please
contact the service department at [phone].
PLEASE NOTE:
THIS WARRANTY COVERS PRODUCT DEFECTS ONLY;
IT DOES NOT COVER INCIDENTAL OR CONSEQUENTIAL
DAMAGES AS RESULT OF MISUSE OR ABUSE.
3752 Copeland Dr • Zephyrhills, FL 33542
TEL: [phone] • FAX: [phone]
EMAIL: [e-mail]
www.HornBlasters.com
USER MANUAL
FAST-FILL 120 PSI AIR SOURCE KIT
WARNING: This product may contain a chemical
known to the State of California to cause cancer,
birth defects or other reproductive harm.
@HORNBLASTERS #HORNBLASTERS