Upgrading The Firmware; Additional Information; Special Service Tools; Tightening Torques - Grundfos CUE Series Service Instructions Manual

5. Upgrading the firmware

The firmware package is downloaded from Grundfos Technical
Information found on Insite under "Toolbox".
1. Go to Grundfos Insite and select "Toolbox".
2. Select "GTI - Grundfos Technical information".
3. Select "Service Support Tools".
4. Select the CUE firmware.
5. Copy the files to a USB stick.

6. Additional information

6.1 Special service tools

A
Pos. Description
A Torque screwdriver
Digital multimeter, type RMS, CAT III / 1000 V, (KAT III/1200 V for 400/690 V), with
B
diode testing function
C Clip-on amperemeter

6.2 Tightening torques

Tightening torques for terminals
Tightening torque [Nm]
Enclosure Mains
91, 92, 93
A2 1.8
A3 1.8
A5 1.8
B1 1.8
B2 4.5
B3 1.8
B4 4.5
C1 10
1) 2)
C2
14 / 24
C3 10
1) 2)
C4
14 / 24
1)
Conductor cross-section ≤ 95 mm
2) Conductor cross-section ≥ 95 mm
26
Motor Earth Relay
96, 97, 98 95, 99 01-06
1.8 3 0.6
1.8 3 0.6
1.8 3 0.6
1.8 3 0.6
4.5 3 0.6
1.8 3 0.6
4.5 3 0.6
10 3 0.6
1) 2)
3 0.6
14 / 24
10 3 0.6
1) 2)
3 0.6
14 / 24
2
.
2
.
B
Further information
C
Part number
0.5 - 4.0 Nm SV0435