Operating Instructions – Explosion-Proof AC Motors DR63/eDR63, DVE250/280
21
4
Turning the terminal box
Mechanical Installation
The type and number of terminal strips varies with the terminal box design and the
options.
Proceed as follows to turn the terminal box:
1. Loosen the screws [123] from the terminal box cover and remove the cover.
2. Remove the retaining screws [119] of the terminal box.
3. Clean the sealing surfaces at the stator shoulder, the bottom and the cover of the
terminal box.
4. Check the gaskets [111 and 131] for damages and replace them if necessary.
5. Remove the unit consisting of terminal board and anti-twist frame from the terminal
box.
Remove any cables that are already connected before taking out the unit.
6. Position the terminal box as desired.
7. Turn the unit consisting of terminal board and anti-twist frame in the same way as the
terminal box and put it back in.
The terminal board designations U1, V1 and W1 must be pointing towards the cable
outputs afterwards.
8. Fasten the bottom part of the terminal box with the screws [119] and the lock washers
with one of the following tightening torques:
•
EDR.71 – 132:
5 Nm [44.3 lb-in]
•
EDR.160 – 225:
25.5 Nm [225.7 lb-in]
9. Re-connect any removed cables according to the following table:
Tighten the nuts on the connection bolts with the appropriate tightening torque.
10.Fasten the terminal box cover with the screws [123] and lock washers using the
appropriate tightening torque. Make sure the gasket is seated properly.
[2]
Terminal stud nut
[111] Gasket
[113] Terminal box retaining lock washers (4 x each)
[117] Hexagon screw grounding inside
[119] Terminal box retaining lock washers (4 x each)
[123] Terminal box cover retaining lock washers (4 x each)
[131] Gasket
[140] Hexagon screw grounding outside
[a]
Terminal strip 1
[a1]
Screw of option terminal / rectifier
[a2]
Flat head screw option terminal
[b]
Terminal strip 2
[1213] Kit (1 anti-twist frame, 1 terminal board, 4 sleeves, 2 screws, 2 nuts)
Yellow
White
Brown
W2/T4 U2/T5 V2/T6
Black
Red
Blue
U1/T1
V1/T2 W1/T3
INFORMATION
The connected cables must be free from bends and twists, etc.
Observe the correct order of the small connection accessories, see chapter "Motor
connection via terminal board".