Miller Electric KC237900 - Manual (Page 10)

OM-530 Page 6
3-5. FIELD INSTALLATION OF PULSER
WARNING: ELECTRIC SHOCK can kill.
•
Do not touch live electrical parts.
•
Shut down welding power source, and dis-
connect input power employing lockout/tagging
procedure before beginning this installation.
Lockout/tagging procedures consist of pad-
locking line disconnect switch in open position,
removing fuses from fuse box, or shutting off
and red-tagging circuit breaker or other discon-
necting device.
1. Remove top cover from TIG-Unit, if applicable.
2. Remove right blank panel from front of TIG-Unit.
Save screws; discard blank panel.
3. Examine inside of TIG-Unit behind front panel for lo-
cation of lead harnesses, etc.
4. Carefully slide Pulser unit into opening on front pan-
el of TIG-Unit. Secure Pulser with the four screws
removed from blank panel in Step 2.
5. Route leads from Pulser down top of center mount-
ing panel and then to right of terminal strip 1T. (The
terminal strip is located on top of center mounting
panel toward rear of TIG-Unit; the terminals are la-
beled directly below the strip; see Figure 3-2.)
6. Remove jumper link 4 (across terminals 84 and 83)
on terminal strip 1T. See Circuit Diagram 7-1.
7. Connect Pulser leads to correspondingly numbered
terminals (41, 42, 43, 84, 83, 72) on terminal strip
1T. The leads from Pulser are all numbered.
8. Connect grey lead 42 from rear of Pulser case to
front center mounting panel where existing grey
lead 42 is connected to chassis (not to terminal
strip).
9. Secure leads to existing harness with nylon cable
ties or tape to maintain a proper lead dress.
10. Reinstall cover onto TIG-Unit, if applicable.
3-6. FIELD INSTALLATION OF ELECTROSLOPE
WARNING: ELECTRIC SHOCK can kill.
•
Do not touch live electrical parts.
•
Shut down welding power source, and dis-
connect input power employing lockout/tagging
procedure before beginning this installation.
Lockout/tagging procedures consist of pad-
locking line disconnect switch in open position,
removing fuses from fuse box, or shutting off
and red-tagging circuit breaker or other discon-
necting device.
1. Remove top cover from TIG-Unit, if applicable.
2. Remove left blank panel from front of TIG-Unit.
Save screws; discard blank panel.
3. Examine inside of TIG-Unit behind front panel for lo-
cation of lead harnesses, etc.
4. Carefully slide Electroslope unit into opening on
front panel of TIG-Unit. Secure Electroslope with
the four screws removed from blank panel in Step 2.
5. Route leads from Electroslope down top of center
mounting panel and then to right of terminal strip 1T.
(The terminal strip is located on top of center mount-
ing panel toward rear of TIG-Unit; the terminals are
labeled directly below the strip; see Figure 3-2.)
6. Connect grey lead 42 from rear of Electroslope case
to front center mounting panel where existing grey
lead 42 is connected to chassis (not to terminal
strip).
7. Remove jumper links 1 (across terminals 3 and 2),
2 (across terminals 71 and 70), and 3 (across termi-
nals 76 and 78) on terminal strip 1T. See Circuit Dia-
gram 7-1.
8. For Models Effective With Serial No. HK261770:
Connect Electroslope leads to correspondingly
numbered terminals (3, 2, 5, 6, 7, 41, *42, 43, 71,
70, 56, 61, *42, 62, 76, 78, 72, 58, 59) on terminal
strip 1T. Connect Electroslope leads 30 and 37 to
corresponding terminal on terminal strip 2T. The
leads from Electroslope are all numbered. Connect
lead 60 from Electroslope to terminal 1 on relay CR2
(see Figure 3-2).
*Connect only one lead 42 to each 42 terminal.
The leads are cut to proper length and will only
reach the appropriate segment of the terminal
strip.
9. For Models Prior To Serial No. HK261770: Connect
Electroslope leads to correspondingly numbered
terminals (3, 2, 5, 6, 7, 41, *42, 43, 71, 70, 56, 61,
*42, 62, 76, 78, 72) on terminal strip 1T. Connect
Electroslope lead 60 to terminal 1 on relay CR2.
If The Unit DOES NOT Have Preflow:
c. Replace existing connector on Electroslope
lead 59 with a 3/16 in. female friction connector,
and connect lead 59 to terminal 4 on relay CR2.
d. Individually tape and tie remaining Electroslope
leads 30, 37, and 58 to existing wiring harness.
If The Unit DOES Have Preflow:
a. Replace existing connectors on Electroslope
leads 30 and 37 with a 1/4 in. piggyback (dual
friction) connector.
b. Disconnect leads 30 and 37 from Preflow
switch S200.
c. Reconnect lead 30 (from Step b) to piggyback
connector on Electroslope lead 30, and recon-
nect lead 37 (from Step b) to piggyback connec-
tor on Electroslope lead 37.
d. Install piggyback connector on Electroslope
lead 30 onto terminal of Preflow switch from
which lead 30 (from Step b) was removed.
e. Install piggyback connector on Electroslope
lead 37 onto terminal of Preflow switch from
which lead 37 (from Step b) was removed.