Operating instructions

3-1 0 Installation
Connecting AC Power to the
PC40AC Unit
(cootinued)
WARNING: Risk of electrocution. The AC input power line to
the
PC40 provides voltage that can cause personal injury or
death. Before making any electrical connections, disconnect
and lock out power
to the main circuit breaker for the input
power line (Figure 3.8}.
WARNING: Shock hazard. Touching bare wires in the PC40
can result in shock that can cause personal injury or death.
When making electrical connections, make sure to strip only
as much insulation from the wires as needed.
Also, make
sure that the insulation fits snugly against the
PC40 terminal
blocks.
3.
Use 14-16 gauge electrical wire (customer supplied) to make the
connections that are listed in Table 3.2. Terminal Block
P2 is shown
in Figure 3.9.
Figure 3.8 - Disconnect and lock out input
power
CAUTION: Reversing the wiring to connections P2-1 (L 1}
and P2-2 (Neutral) can damage the PC40. If you reverse
these connections, the
PC40 will only operate properly until
PiN 108 389A
57 · 28 1193
the first fault on L 1 (to ground). Then, the unit will be
damaged, and/
or the branch circuit fuse or breaker will blow
or trip. Make sure that you wire the AC power connections
as listed in the table below.
Table 3
.2 - AC Power Connections and Pin Functions
AC Power Une PC40 Connection
Pin Function
Connection Terminal Block
P2
Ground P2-3 ("Safety Ground") Ground
240VAC P2-1 ("240V L 1"}; refer to 240 VAC input power
the caution, above. supply connection
Neutral
P2-2 ("240V Neutral"}; Neutral
refer
to the caution, above.
4.
If you are NOT connecting other devices at this time, do the following:
a. Grasp the front assembly with one hand. Remove the two screws
holding it to the back enclosure.
b.
Carefully rotate the front assembly 180" and place it on the back
enclosure.
c. Replace and tighten the two loose screws.
d. Tighten the four remaining screws.
c Nordson Corporation 1993
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