Dwyer LCR10 - Manual (Page 7)

April, 2003 Page 7 of 20 LCR10 IOM
2-5 Power Wiring
The unit is supplied to operate at 110/220VAC 50/60Hz. Check that the
installation voltage corresponds with the power rating indicated on the
product label before connecting power to the unit.
The recorder uses AC power when it is operating normally. The battery
backup option will allow the recorder to operate for approximately 48 hours
in case of a power loss.
In order to connect the recorder to the main AC power, you must fi rst gain
access to the microprocessor PC board that is mounted to the back of the
chart plate. Your recorder will have a hinged chart plate held in place by
two (2) screws located on the right hand side of the chart plate. Remove
these two screws and open the hinged chart plate. If you are not sure how
to access the back of the chart plate. See Figure 2-5 (pg. 13) for screw
location.
Figure 2-2
The AC power connections are made to terminal block location on the
back side of the chart plate of the recorder. Refer to Figure 2-2 for proper
connection to the main AC power.
This equipment is designed for installation in an enclosure
which provides adequate protection against electric shock. The
enclosure must be connected to earth ground.
Local requirements regarding electrical installation should be rigidly
observed. Consideration should be given to prevent unauthorized or
accidental access to the power terminals.
T1
T2
T3
T4 L1
L2
AC Input Terminals
110 VAC Wiring
T1
T2
T3
T4 L1
L2
220 VAC Wiring
NOTE: Connect Earth Ground to
terminal on rear of chart plate
near power transformer.