10-3. Run-In Procedure Using Resistance Grid

 

 

!

Stop engine.

 

 

! Do not touch hot exhaust

 

 

 

pipe, engine parts, or load

6

 

 

bank/grid.

 

!

Keep exhaust and pipe away

 

 

 

2

 

from flammables.

 

NOTICE − Do not perform run-in

 

 

 

 

procedure at less than 20 volts weld

 

 

output and do not exceed duty

 

 

cycle or equipment damage may

 

 

occur.

 

 

1

Resistance Grid

 

1

Use grid sized for generator rated

 

output.

 

 

Turn Off grid.

 

 

2

Welding Generator

 

 

Place A/V range switch in maxi-

 

 

mum position, A/V control in mini-

 

 

mum position, and Output Selector

 

 

switch (if present) in either DC

 

 

position.

 

 

3

Weld Cables

 

 

Connect grid to generator weld

 

 

output terminals using proper size

 

 

weld cables with correct connec-

 

 

tors (polarity is not important).

 

 

4

Voltmeter

 

 

5 Clamp-On Ammeter

3

5

Connect voltmeter and ammeter as

shown, if not provided on generator.

 

 

Start engine and run for several

 

 

minutes.

 

 

Set grid switches and then ad-

 

 

just generator A/V control so

4

 

load equals rated voltage and

 

current of the generator (see

 

 

 

 

nameplate, rating label, or the

 

 

specifications section in this

 

 

manual).

+

 

Check generator and meters after

 

 

first five minutes then every fifteen

 

 

minutes to be sure generator is

 

 

loaded properly.

 

 

NOTICE − Check oil level frequent-

 

 

ly during run-in; add oil if needed.

It is recommended to run the weld- ing generator for two hours mini- mum and up to four hours under load. Place A/V control in minimum position, then shut down grid to remove load. Run engine several minutes at no load.

! Stop engine and let cool.

6 Engine Exhaust Pipe

Repeat procedure if wetstacking is present.

S-0684

OM-223 037 Page 48

Page 54
Image 54
Miller Electric Big Blue 400 PX manual Run-In Procedure Using Resistance Grid