Emerson 2000IW Maintenance Manual page 85

5.4.2.1 Remove 24/5 Volt Power Supply and Box Fan
The power supply and the fan are mounted on one common chassis, and are removed as
a single unit. If it is necessary to repair or replace either of these units, it is necessary to
first remove the unit, and then separate the fan from the power supply. Refer to
3.5 DC Power Module
NOTICE
1. Turn off the welder and unplug main power.
2. Turn air pressure to zero.
WARNING
3. Open the left side cover. See Section
032-338).
4. Snap out the harness routed through the clips (Item 1,
Box Fan) on the top left of the fan.
5. Remove and label the six spade lugs (Item 2,
the left side of the power supply.
6. Remove and label the spade lug and 3 pin (24 V AC In) connector (Item 3,
Power Supply and Box
7. Loosen, but do not remove the four screws (Item 4,
Fan).
8. Slide the assembly to the left, and then pull gently toward you. There is still a six pin (5 V DC
Out) connector (Item 5,
of the power supply. Remove it at this time.
9. If it is necessary to replace the fan, remove the three screws (Item 6,
Supply and Box
bracket. Unplug the two spade lugs. Make certain that the red lug goes to the red terminal, and
the black lug goes to the black terminal. Be certain to install the lock washers when re-installing
the fan.
10.To replace the power supply, remove the four screws and lock washers that mount the board to
the standoffs attached to the mounting bracket. Save the hardware for the replacement of the
new or repaired unit.
5.4.2.2 Replacement of the 24/5 Volt Power Supply and Box Fan
Reverse the "Remove" instructions to replace the unit.
1019567 REV. 03
and Figure 5.6 24/5 Volt Power Supply and Box
Do not totally remove screws. The screw holes are the keyhole type.
This assembly is secured with 4 screws and only needs to be
loosened to slide the assembly left, and pull toward you to allow the
screw heads to pass through the keyholes. Total removal of the
screws could cause the two bottom standoff spacers to fall into the
welder.
General Warning
Turn air pressure to zero and disconnect the main air supply. Failure
to do this leave the welder under potentially dangerous air pressure.
5.3 Opening and Removing the Left Side Cover (EDP 100-
Fan) on top of the power supply.
Figure 3.4 2000IW/IW+ Ultrasonic Power
Fan) and lock washers on the underside that attach the fan to the mounting
Figure 5.6 24/5 Volt Power Supply and
Figure 5.6 24/5 Volt Power Supply and Box
Figure 5.6 24/5 Volt Power Supply and Box
Module) attached to the rear
Figure 5.6 24/5 Volt Power
Figure
Fan.
Fan) on
Figure 5.6 24/5 Volt
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