Profax AEC 200 User Manual download pdf (Page 22)

2120

REMOVAL & REPLACEMENT INFORMATION

A.) DRIVE ROLL (Fig. 1)

1.) Unlatch swing out arm and rotate out away from drive roll.

2.) Remove palnut from end of motor shaft.

3.) Lift drive roll off shaft.

4.) Install new drive roll making sure key way lines up with

woodruff key.

5.) Replace palnut.

6.) Readjust tension on swing out arm.

B.) DRIVEN ROLL (Fig. 1)

1.) Unlatch swing out arm and rotate out away from drive roll.

2.) Remove one of the retaining rings on the driven roll

bearing pin.

3.) Remove pin and driven roll.

4.) Install the replacement driven roll, inserting pin and replace

retaining ring.

5.) Return and readjust tension on swing out arm.

C.) MOTOR

1.) Remove front cover.

2.) Remove the four screws on rear cover to release housing.

(Fig. 2)

3.) Remove motor leads on terminal strip. (16 black and 23 red)

(Fig. 3)

4.) Remove the three screws holding gun handle to housing.

(Fig. 4)

5.) Remove handle assembly from housing. (Fig. 5)

Remove the motor insulator and O-ring, set

them aside for use when reassembling.

6.) Remove motor from gun handle. (Fig. 5)

7.) Remove drive roll and place on replacement

motor making sure key way lines up with

woodruff key, replace palnut.

8.) Install new motor in handle, making sure

motor lead wires are in the groove provided in

the handle. Replace motor insulator and

O-ring in proper place.

9.) Reassemble gun making sure motor leads are

out of way of the movable arm on the rheostat.

D.) JOG BUTTON SWITCH

1.) Remove retaining nut on jog button switch.

2.) Unsolder Electrical leads.

3.) Solder electrical leads to new job button switch.

4.) Replace in button of handle and replace retaining nut.

E.) GAS VALVE (Fig. 6)

1.) Remove front and rear covers.

2.) Remove retaining ring from trigger pin, remove palnut

from valve pin, remove the pin, trigger, trigger spring and

the valve guide.

3.) Remove retaining nut on diaphragm assembly, remove

pin and diaghram.

*IMPORTANT: Before gun assembly adjust gas valve

as follows:

A.) Attach shielding gas supply hose from AEC 200 gun

to the flowmeter regulator on gas supply source.

B.) Full gas flow must be attained before microswitch

is actuated. Pull the trigger and adjust the palnut

to achieve proper gas flow. An allen screw in the

trigger casting allows for proper gas flow

adjustments before microswitch is actuated.

C.) With the gun trigger fully depressed adjust the

microswitch actuating screw, in the trigger

casting, until the microswitch makes first click.

While still holding the gun trigger fully

depressed, check for at least 0.30" of movement in

the microswitch actuating button.

D.) Reassemble the Gun.

4.) Install new valve components.

F.) MICROSWITCH

1.) Remove the microswitch insulator and microswitch.

2.) Remove electrical lead wires.

3.) Connect electrical lead wires to new microswitch.

4.) Replace microswitch and insulator to housing.

G.) WIRE FEED SPEED RHEOSTAT

1.) Remove front cover.

2.) Disconnect electrical lead wires from terminal

strip inside rear cover. (Lead's #13, 14 & 15)

3.) Remove rheostat screws from housing and

remove rheostat.

4.) Replace new rheostat with screws previously removed.

5.) Reconnect the marked lead wires to corresponding

terminals on terminal strip in rear cover.

WIRE GUIDE HOUSING

PALNUT

VALVE GUIDE

VALVE PIN

VALVE SPRING

RETAINING NUT

TRIGGER

TRIGGER SPRING

TRIGGER PIN

ACTUATING

SETSCREW

RETAINING RING

DIAPHRAM

RETAINING RING (2)

DRIVE ROLL

Figure 1. Drive roll replacement

FOUR SCREWS

PAL NUT

Figure 2. Removing rear cover

Figure 5. Gun handle and motor withdrawl.

Figure 6. Adjusting gas valve

Figure 3. Removing motor leads

from terminal strip

Figure 4. Removing the three screws holding

gun handle to housing.

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Profax AEC 200 User Manual Page 22

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