Section 7 − Compressor Operation; Air Compressor Switch - Miller TRAILBLAZER 302 AIR PAK Owner's Manual

SECTION 7 − COMPRESSOR OPERATION

7-1. Air Compressor Switch

.
Weld output and generator power are
reduced when the air compressor is
on.
With the compressor on, weld or gen-
erator loads will cause the engine to
run at 3600 RPM.
Air Compressor Operation
1 Displays
Displays show air compressor status (on/
off), and maintenance information (hours,
oil change countdown, fault shutdown).
.
See Section 12-1 for additional display
code information.
2 Compressor Function Switch
Turn switch to Air Compressor CFM set-
tings to turn compressor on. Turn switch to
Off position to turn air compressor off.
At 22 CFM, engine runs at 2400 RPM.
At 28 CFM, engine runs at 3000 RPM.
At 31 CFM, engine runs at 3600 RPM. Use
31 CFM setting for maximum air output.
.
To reduce moisture in the compressor
.
air, install optional air cooler with sep-
arator (Part No. 300 420), or desiccant
dryer (Part No. 300 690).
.
When the temperature inside the unit
drops below 455 (75 C), internal heat-
ers activate to prevent air system
freeze-up.
Air Compressor Maintenance
Use switch to monitor engine and com-
pressor maintenance requirements.
Engine Hrs position displays total engine
hours.
Engine Oil Change position displays hours
left before next oil change. Hours count
down from 100.
Compressor Hrs position displays total
compressor hours.
Compressor Oil Change position displays
hours left before next oil change. Hours
count down from 500.
.
Negative hours indicate time past rec-
ommended oil change.
A complete Parts List is available at www.MillerWelds.com
O IL 500
2
To reset oil change hours: with engine off,
place switch in Engine or Compressor Oil
Change position and cycle Engine Control
switch between Auto/Run and Run three
times.
Battery Charge/Jump Operation
.
Battery charger output is available
only when this switch is in one of the
four Charge/Jump positions AND the
DC/Battery/AC switch is in the Battery
position. Weld output is not available.
.
Before connecting battery cables,
place Compressor switch in position
matching voltage of battery being
charged or jumped.
Use switch to select battery voltage. Place
DC/Battery/AC switch in Jump/Charge po-
sition.
When done move switch to Off position
and stop engine or set Process/Contactor
switch to any Remote On/Off Switch Re-
quired position. Move DC/Battery/AC
switch to a weld position.
See Section 8 for battery charging/jump
starting procedures.
1
Ref. 804 857-C / Ref. 255 585-A
OM-229 930 Page 37