ESAB PCM-875, Instruction Manual

Page: 14 / 48

SECTION 2 INSTALLATION
13
1. Remove cover from the PCM-875 power source.
2. Locate the Input Bridge (IBR) and TB5 terminal
block (see Fig. 1) on the left side towards the rear
panel. Disconnect the gray lead from TB5-2 and
then connect it to TB5-1.
3. Locate the output bridge (D1) on left side towards
the front panel (see Fig. 2). Disconnect and swap
leads X2 and X3 from the main transformer. For
200(208) vac input, X2 is connected to TB3 and X3
is connected to terminal 3 of D1. Make sure the
connections are firmly tightened.
4. Leave all other wires the same.
5. Reinstall cover and connect the PCM-875 to 208 vac
input power.
X3
TB3
X2
X1
+
FROM MAIN
TRANSFORMER
~
~
~ OUTPUT
BRIDGE (D1)
Fig. 2
2.7 CONNECTING PCM-875 FOR 200(208)
VAC INPUT
ELECTRIC SHOCK CAN KILL! Precautionary mea-
sures should be taken to provide maximum protec-
tion against electrical shock. Be sure that all power
is off by opening the line (wall) disconnect switch
and by unplugging the power cord to the unit when
reconnecting for 200(208) VAC Input.
The PCM-875 power source with 200/230 vac, 1-phase
input capability is factory set for 230 vac input. If using
200(208) vac input, the PCM-875 must be reconnected
as follows before connecting to your input power:
BLK
R
R2
S G
T
+
(IBR)
INPUT
BRIDGE GRY
TB5
GRY
BLK
Fig. 1
Figure 2-2. Original Factory Setup for 230 Vac Input on
Power Source with 200/230 Vac Input Power Capability
1
2
3