Thermal Dynamics 51 CUTMASTER, Руководство по обслуживанию

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REPLACEMENT PROCEDURES 5-4 Manual 0-2972
B. Main Input Contactor (W1) Replacement
1. Remove the cover per Subsection 5.04-A.
2. Label and disconnect all wiring leading to the con-
tactor.
3. Remove the hardware securing the Input Contac-
tor to the base of the power supply.
4. Fasten the replacement Contactor in place with the
label positioned as shown in the illustrations.
5. Connect the wiring as shown below.
NOTE
It is important that wires are installed correctly, as
shown, to prevent damage to the unit.
For 208/230-Volt Power Supplies:
A-02849
Black
Cable #2
Black
Cable #1
Blue
Wire #11
Blue
Wire #12
Blue
Wire #3
Blue
Wire #4
White Input
Cable (L1)
Black Input
Cable (L2)
Label
T1
T2
For 400-Volt and 460-Volt Power Supplies:
A-03176
Main Contactor
#12
#3
L1 L2 L3
T1
T2
T3
To E3
Connections to
Main PCB
#4
L3
L2
#11
To E1
To E2
Input Side
Label
L1
6. Reinstall cover.
D. Logic PC Board Replacement
Follow the antistatic procedures provided in Subsection
5.02.
1. Remove the cover per Subsection 5.04-A.
2. Unlock the two tabs on the card guides protruding
from the Main PC Board. Push in the silver part of
the tab until the black part pops out on the other
side.
3. Gently pull the Logic PC Board from the Main Power
PC Board.
4. Install the replacement Logic PC Board by revers-
ing the above steps. Note the following:
a. The pins on the Logic Board must be fully
seated in the J1 connector on the Main PC
Board. Ensure that the tabs on the card guides
close properly.
b. The small pin inside the tab on the card guide
must slide through the hole in the PC Board to
ensure the PC Board is properly secured.
5. Reinstall the power supply cover.
E. IGBT Circuit Board or Output Diode
Replacement
Follow the antistatic procedures in Subsection 5.02.
WARNINGS
Follow the electrostatic discharge instructions in-
cluded with the component to prevent damage to
the component.
Thermal pads and the large flat surface on the back
of diodes and IGBTs must be kept clean. Thermal
pads must not be allowed to pick up any foreign
material. A very clean installation between the
module and heatsink is essential for proper opera-
tion.
1. Remove cover per Subsection 5.04-A.
2. Turn the Power Supply onto its side.
3. For IGBTs, disconnect the small jumpers from their
connections to the Main PC Board. Label and care-
fully remove all other wire connections from the
Board being replaced.
4. Remove screw securing Board in place. Remove
board and its screw from the power supply.
5. Use isopropyl alcohol and a clean rag to clean the
heatsink. Remove all residue of the original ther-
mal pad. Do not scratch or abrade the surface.