Specifications

CHIEF 2000 HERTZ DC INVERTER WELDER

USERS MANUAL

Maintenance Precautions:

1. Maintenance must be done by an authorized Chief

Automotive Systems, Inc. representative.

2. Respect all safety instructions and warning labels as

indicated in this manual.

3. For access to electronic housing, remove the top panel.

(See screws located under rubber mat.)

CAUTION: Before removing top panel read

following section entitled: Supplementary

Safety Warnings For Maintenance.

Supplementary Safety Warnings:

1. Voltage in machine may reach 670 VDC (indicated on

warning label inside of machine) and is a potential

source of danger if recommendations in this manual

are not followed.

2. This machine includes capacitors which store electrical

power even when the system has been disconnected

from power supply for a substantial period of time.

3. Before opening top panel of machine, place main switch

(located on front of machine) at “off” position and dis-

connect machine from main power supply. Also, turn off

breaker on back of machine. Both steps are manda-

tory.

4. Lower the lighting in the room and remove the panel.

(Bright lighting may affect visibility.) Check LED locat-

ed on the PCB at rear of machine. (See reference

No. 1 in photo above.) This LED must be off. (No light

should be seen.) The presence of light indicates that

capacitors are still charged.

If light is not detected in LED, make a safety check

by shunting the two aluminum bars. (See reference

Nos. 2 and 3 in photo above.)

For this operation, use

only an electrician’s tool (pincer or screwdriver) insulat-

ed up to 1000V.The purpose of this step is to discharge

the capacitors in case the LED is defective.

IMPORTANT: These precautions are essential every time

the machine has been connected (even for a short peri-

od of time) as capacitors can be charged in less than a

second. Also, capacitors may remain charged for several

days even if the machine has been disconnected.

2 and 3