Omega DP41-S - Main Board Power Jumpers; Figure 5-3 Transformer Jumpers

5.2.2 Main Board Power Jumpers
To check voltage jumpers or to change from 115 V ac to 230 V ac:
CAUTION: The meter has no power-on switch; it will be in operation as soon
as you apply power. To change the factory preset jumpers, disconnect the
power from the unit. Failure to do so may result in injury! The jumpers must
be changed by specifically trained personnel.
1. “Reveal the Main Board” (refer to Section 5.2, Disassembly).
2. Locate the main board assembly and position it in front of you the same
way as shown in Figure 5-3.
3. On the main board, locate the transformer jumpers W1, W2, and W3
near the transformer T1.
If your power requirement is 115 V ac, jumpers W1 and W2 should be
installed. (DO NOT INSTALL W3)
If your power requirement is 230 V ac, jumper W3 should be installed.
(DO NOT INSTALL W1 OR W2)
Figure 5-3. Transformer Jumpers
W2
W3
W1
AC POWER
BOARD
MAIN
BOARD
T1
REAR OF
METER
5-5
Setup
5