Thermal Dynamics PakMaster 75XL Plus, Operating Manual

Page: 17 / 48

Manual 0-2746 3-3 INSTALLATION
For single - phase operation the jumper wire must be
installed on the contactor as described in Section 3.07
for single - phase input voltage.
3.07 Primary Input Power Cable
Connections
Units ordered as 230V, single - phase, will have a six foot
power input cable and plug factory installed. For all other
units, a cable must be provided by the end user. Recom-
mended cable sizes are specified in Appendix 1.
1. Route the primary power cable through the strain re-
lief fitting in the rear panel of the Power Supply and
tighten strain relief screws.
AC Input Power
Cable Strain Relief
AC Input
Power Cable
A-00912
Figure 3-3 AC Input Power Cable Strain Relief
2. Connect the input cable inside the Power Supply for
the type of operation per the following:
A. Three - Phase Operation
Three - phase operation requires a 3 - conductor cable
with ground.
a. Locate the ground stud and remove the top nut
and washer.
b. Install a lug terminal on the ground wire.
c. Place the ground wire onto the ground stud
and secure with the nut and washer.
d. Insert the other three wires into the L1, L2, and
L3 terminals on the contactor.
e. Tighten all set screws.
NOTE
The jumper wire from L1 to L4 must not be re-
moved.
L1
L2
L3
Input
Contactor
AC Input
Power Cable
GND
Unused Jumper
L3 to L3 (storage)
A-02670
Figure 3-4 Primary Power Cable Connections -
Three - Phase Operation
B. Single - Phase Operation
Single - phase operation requires a 2 - conductor cable
with ground.
a. Locate the single - phase jumper wire con-
nected between the two L3 terminal lugs on
the input contactor.
b. Move one end of the jumper wire from termi-
nal lug L3 to L2 at the contactor.
NOTE
The jumper wire from L1 to L4 must not be re-
moved.