Power Connection - Hanna Instruments PCA 311 Instruction Manual

Power Connection

Warning: Before connecting the instrument to the line:
Recorder Output and Relay Access
Power connections are made at a terminal block located in the
center of the electrical compartment to the right of the fuses.
Hard wiring with 13 mm (½") conduit is recommended and
usually required by most municipal electrical codes.
1) Check the label near the fuses for proper voltage.
2) Be sure the power cord is not connected to the line.
3) Open front panel.
4) Remove the cover screws (Allen head).
5) Do not remove peristaltic pump or motor.
6) Unplug all alarms and recorder jacks.
Feed the power cord through the watertight grommet and
tighten the grommet nut. See the picture below for proper wire
connections.
Hard wiring for alarms and relays recorder output and serial
communication can be accomplished through four watertight con-
nectors on the left side of the enclosure, by passing wires through
the rubber grommet and tightening the nut as described earlier.
Refer to the drawings for proper wire connections.
Line Filter Line Filter
Main Power PCB Main Power PCB
PPCA320P-3
CS R2 CS R2
RELICAM RELICAM RELICAM RELICAM RELICAM RELICAM
Electrovalve
Transformer
Ground screw
Terminal
block block
Neutral
Watertight
Grommet and
1
Nut Assembly
Main Power
Cord
Earth
Phase
2 3