Lincoln Electric CV ADAPTER IM309-D - Manual (Page 21)

B-12 INSTALLATION
CV ADAPTER
B-12
9. 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 8. 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.
10. Connect leads 608 and 609, routed into the gener-
ator in Step 9, to the two thermostat terminals.
11. Disconnect the white and yellow leads connected
to the alternator brushes and reconnect the brush
leads as before. Re-route these white and yellow
leads over the top of the generator brushholder to
meet the W and Y leads of the CV Adapter from
Step 9. Connect W lead to white lead and Y lead to
yellow lead using #10 x 1/4 screw and nut provid-
ed. Insulate each connection with tape. Insure that
all leads are well clear of moving 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 Classic II 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 11. 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.
K385-1 MODEL CV ADAPTER
The K385 has been replaced with the K385-1. The only
difference between them is the mounting bracket. The
K385 was used on SAE-300 and SAE-400 Amp Engine
Welder with AC Auxiliary power between codes 8813
and 9782. The K385-1 has a universal mounting brack-
et which permits it to be mounted on codes between
8813 and 9782, as well as all codes above 9782
including the SAE-400 WELD’N AIR.
The Figures A and B show the mounting bracket in dif-
ferent positions, depending on the type of fuel tank rail
being used.
FIGURE A
FIGURE B
CAUTION