Lincoln Electric CV ADAPTER IM309-D - Manual (Page 18)

B-9 INSTALLATION
CV ADAPTER
B-9
10. Route the CV Adapter leads, which exit from the
bottom of the Adapter case, through a 1-1/4 x 3-
1/2" rectangular opening located at the 5 o’clock
position on the generator frame. Inside the frame,
the leads should be formed against the frame
shell. Use the 5/16-18 x 5/8 bolt with hardware
supplied to connect the #2 heavy cable from the
CV Adapter to the free end of the thermostat
assembly from Step 9. The flat side of the cable lug
should be against the bottom side of the thermo-
stat assembly with the nut, washer and lockwash-
er on the top.
11. Connect leads 608 and 609, routed into the gener-
ator in Step 10, to the two thermostat terminals.
Use tape to separately insulate the unused Y and
W leads. Insure that all leads are well clear of mov-
ing parts and secured in place with tape.
12. Replace the roof assembly and bracket cover
removed in Step 1.
POLARITY OF THE STANDARD OUTPUT TERMI-
NALS MUST BE AS STATED IN STEP 13 AND THE
MAXIMUM OPEN CIRCUIT VOLTAGE WITH THE
LOWER MODE SWITCH IN CV POSITION MUST BE
AS STATED IN STEP 14 BEFORE PLACING THE
UPPER MODE SWITCH IN CV POSITION. FAILURE
TO HAVE THE CORRECT POLARITY AND VOLT-
AGE BEFORE PLACING THE UPPER MODE
SWITCH IN CV POSITION WILL RESULT IN DAM-
AGE TO THE CV ADAPTER.
13. To check the VV output, place both CV/VV switch-
es on the CV Adapter in the “VV” position. If welder
has remote control, set remote control switch to
local position. Start the SA-250 and place idler
control in “high” position. Use a DC voltmeter
across the standard output terminals to check the
output polarity. If it is incorrect, recheck Steps 3
through 10. Voltage should be about 47-60 volts
DC when the Fine Current Adjustment is set at
minimum and 87-100 volts DC when set at maxi-
mum. These voltages may be slightly high if read-
ings are taken when welder is cold.
14. To check the CV output, place only the lower
switch in the “CV” position. This may be done while
the engine is running as long as no welding is
being done. Voltage between the positive output
terminal and the CV output terminal should be 7-12
volts DC when the CV Adapter voltage control is at
minimum setting and 36-48 volts DC at maximum
setting.
15. If output varies greatly from that specified in Steps
13 and 14, check wiring and refer to troubleshoot-
ing section of manual.
K384 CV ADAPTER TO CLASSIC I ENGINE
WELDER
NOTE: BEFORE INSTALLING CV ADAPTER, START
ENGINE WELDER AND USE A DC VOLTMETER TO
CHECK THE POLARITY OF THE RED AND BLACK
LEADS CONNECTED TO THE AUXILIARY POWER
RECEPTACLE. THE RED LEAD SHOULD BE NEGA-
TIVE AND THE BLACK LEAD SHOULD BE POSI-
TIVE. IF THE POLARITY IS NOT CORRECT, REFER
TO ENGINE WELDER OPERATING MANUAL FOR
INSTRUCTIONS TO FLASH THE EXCITER TO
OBTAIN THE CORRECT POLARITY.
• TURN THE ENGINE OFF WHILE INSTALLING
THIS ACCESSORY.
• KEEP HANDS, HAIR, CLOTHING AND TOOLS
AWAY FROM MOVING PARTS WHEN STARTING
OR OPERATING ENGINE.
1. Remove roof assembly and bracket cover (cover
on top and at rear of generator). (See Figure 2.)
Also, remove the two gas tank support mounting
bolts on the side opposite the output studs.
2. Mount CV Adapter (nameplate should have an
“SA” above the code number) to the gas tank sup-
port holes. Use one 3/8" bolt with hardware
removed in Step 1 and one stud on Adapter. One
3/8" bolt will not be used as a 3/8" stud from the
Adapter case replaces it. In mounting the unit, be
sure the fuel line and choke cable are not pinched.
(See Figure 1.)
NOTE: FOR STEPS 3 THROUGH 10, REFER TO
L8684 OR L8984 CONNECTION DIAGRAMS FOR
THE APPROPRIATE WELDER CODE NUMBER. CV
ADAPTER CONTROL LEADS ARE NOT COLOR
CODED ON ALL UNITS.
3. Remove existing brown field lead from black
exciter lead on the idler control P.C. board and
connect the brown field lead to CV Adapter lead
509 using the existing push-on terminal. Tape up
connection and unused ring terminal.
4. Tape up ring terminal on CV Adapter lead 610 and
connect push-on terminal of CV Adapter lead 610
to black exciter lead on idler control P.C. board that
was connected to brown field lead.
CAUTION
WARNING