Tweco 1000 Merlin(Dec2004) - Manual (Page 20)

INSTALLATION 3-2 Manual 0-2708
3.04 Lifting Options
WARNINGS
Do not touch live electrical parts.
Disconnect input power conductors from de-ener-
gized supply line before moving unit.
The recommended method for lifting the power supply is
to use the built in lifting eye located in the Top Panel.
The unit may also be lifted using a forklift as follows:
1. Approach from the front or rear of the unit.
2. Place the forks between the rear legs or the front
legs.
3. Center the forks under the unit and carefully check
for proper balance before lifting.
WARNING
FALLING EQUIPMENT can cause serious per-
sonal injury and equipment damage.
• Do NOT pull power supply by torch leads.
3.05 Input Power Connections
The Power Supply accepts input voltages in ranges from
208/230/460 VAC or 220/380-415 VAC, 50 or 60 Hz, three-
phase power.
NOTE
Refer to Section 3.05, Voltage Selection.
A. Electrical Connections
The power source must conform to local electric codes.
For suggested circuit protection and wiring requirements
refer to Appendix 1.
B. Input Voltage Selection
Every Power Supply is factory-wired for 380-415 VAC or
460 VAC, three-phase input as ordered. For any other
input voltage, the Power Supply must be changed using
the procedures in Section 3.06.
C. Opening Power Supply Enclosure
The left side panel of the Power Supply must be removed
to gain access to the input power connections and the
input voltage selection. Use caution when removing the
panel as there is a ground wire connected to the inside of
each panel.
WARNING
Disconnect primary power at the source before as-
sembling or disassembling the Power Supply, torch
parts, or torch and leads assemblies.
1. Remove the eight screws which secure the left side
panel (viewed from the front) to the Power Supply.
2. Loosen the two bottom screws in the slotted holes.
A-02158
Figure 3-1 Removing Left Side Panel
3. Pull the top of the Panel out and then lift up to remove
the panel from the Power Supply a short distance (see
note).
NOTE
There is a ground wire attached to the inside of the
side panel.
4. Remove the nut securing the ground wire to the side
panel and set the panel aside.
5. To reinstall the side panel do the following:
a. Reconnect the ground wire to the panel.
b. Place the side panel onto the frame and slide the
top edge under the lip on the top panel.
c. Reinstall all the screws to secure the side panel.