43 of 132
M-SV-001-EN Rev.E
Compressor Components
Figure 34 - Mains Input
3.4.4 Removal and
Installation
3.4.4.1 Removing the
Soft Start
3.4.4.2 Installing the
Soft Start
1. Isolate the compressor power as described
in the “Electrical Isolation of the Compressor”
section of this manual.
2. Disconnect the Soft Start ground wire by
removing the nuts and Mains Input ground
wire from the ground post on the compressor
housing. See Figure 34 (Mains Input).
3. Remove the screws that secure the mounting
bracket to the compressor.
4. Lift the Soft Start and turn it over, placing it
board side up on the AC bus bars.
5. Unplug the cable connectors from the Soft
Start Board.
1. Place the Soft Start in position.
2. Secure the screws that hold the mounting
bracket to the compressor. Tighten to 5Nm (3.6
ft.lb.).
3. Connect the cable connectors to the Soft Start
Board.
4. Connect the Soft Start ground wire to the
ground post on the compressor housing. Tighten
to 7Nm (5 ft.lb.). See Figure 34 (Mains Input).
5. Connect the Mains Input ground to the ground
post. Tighten to 15Nm (11 ft.lb.).
6. Replace topside covers.
the DC/DC
6. Using a multimeter set for resistance
measurements, place the leads on the ends of
the F3 Nano fuse. The reading should be 0.5Ω.
• An open F3 fuse may indicate a problem with
the Soft Start Circuit Board.
7. Using a multimeter set for resistance
measurements, place the leads on the ends
of the F4 and F5 fast-acting fuses. The reading
should be around 30-38Ω for either fuse.
• An open F4 or F5 fuse may indicate a problem
with the Soft Start transformers, circuit board, or
DC/DC Converter.
Summary of Contents for Turbocor TT-300
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