Disassembly Guidelines; General Torque Tightening Values - Danfoss 176F3737 Installation Instructions Manual

Installation Instructions

1.3 Disassembly Guidelines

NOTICE
To make the disassembly/reassembly process easier, use
these general guidelines:
1. Follow the disassembly instructions for each
component.
2. Place the component together with the removed
fasteners.
3. Replace old component with the new component
provided in the kit.
4. If any fasteners are stripped or lost, replace with
similar fastener from the kit.
5. Follow the assembly instructions to replace and
secure each component.

1.3.1 General Torque Tightening Values

Use a torque wrench to ensure that correct torque is applied.
Incorrect torque can cause electrical connection problems. For
fastening hardware described in this instruction, use the values
listed in Table 1.5 to Table 1.7 except where noted in the
procedures.
Shaft Torx/hex
size drives size
M4 T20/7 mm
M5 T25/8 mm
M6 T30/10 mm
M8 T40/13 mm
M10 T50/17 mm
M12 –/18 mm or
19 mm
Table 1.5 Torque Values Standard Thread
Shaft Torx drives
size size
M4.8 T25
M5 T25
Table 1.6 Torque Values for Thread Cutting into Metal
Shaft Torx drives
size size
M4 T20
M5 T25
Table 1.7 Torque Values for Thread Forming into Plastic
Class A: Clamping metal
Class B: Clamping PCA or plastic
MI70V202
300 A/500 A Current Sensor Kit for D2h/D4h/D7h/D8h Drives
®
VLT FC Series FC 102, FC 103, FC 202, FC 302
Class A Class B
Nm (in-lb) Nm (in-lb)
1.2 (10) 0.8 (7)
2.3 (20) 1.2 (10)
3.9 (35) 2.3 (20)
9.6 (85) 3.9 (35)
19.1 (169) 9.6 (85)
37.9 (335) –
Class A Class B
Nm (in-lb) Nm (in-lb)
5.7 (50) 3.1 (27)
1.7 (15) 1.7 (15)
Class A Class B
Nm (in-lb) Nm (in-lb)
2.8 (24) 2.8 (24)
5.1 (45) 4.0 (35)
Danfoss A/S © 07/2018 All rights reserved.
1.3.2 Removing AC Input Busbars
To remove the AC input busbars, use the following steps. The
AC input busbars can look different when the drive includes
extra input options, such as RFI filter or mains fuses.
Illustration 1.2 shows the AC input busbars configured to
include mains fuses.
1. Remove the air baffle by removing 4 screws (T25)
and 2 nuts (13 mm).
2. Disconnect the customer input power wiring.
3. The next step differs based on the input options
present in the drive. Select the appropriate procedure
for the drive:
•
No options
•
Mains fuses only
•
RFI filter only
•
Mains fuses and RFI filter
1 Top nut (13 mm)
2 AC input busbar
3 Bottom nut (13 mm)
4 Fuse spacer
5 Mains input terminal
Illustration 1.2 AC Input Busbars with Mains Fuse Configuration
(Shown with Fuses Removed)
6 Power terminal mounting plate
7 Brake busbar (optional)
8 U motor busbar
9 Brake terminal (optional)
10 Motor terminal block
3