SEW-Eurodrive DR..71 Series Installation and user guide

Service and Maintenance
Repositioning of the Motor Conduit Box and Cable Entry
Motor Frame Sizes 71-132

Overview
Safety1
Tooling2
Changing the Conduit Box Position3
Changing the Cable Entry4

Safety
Safety First
1. Never perform any work that you are either unqualified for or
uncomfortable in doing
2. Follow all local safety guidelines
3. Never perform work on equipment that is connected to a power
source or energized
4. Always use the proper tooling
5. Make use of all required PPE or Personal Protective Equipment

Safety
Safety First
1. Disconnect all power sources
2. Remove power cables from the motor

Safety
Important! – Following of these instructions will compromise the
seal and paint coating applied during the assembly process at the
SEW-Eurodrive assembly facility.
It is not recommended to change the conduit box position if the
motor is an extreme installation such as wash-down or corrosive
environments.

Required Tooling
•Metric Nut Driver
•Flat head screw drivers
•External Circlip Pliers
•Torx Bit Driver/T-Handles
•Dead Blow Hammer
•Torque Wrench

Conduit Box Position Change
Step 1 – Using the 8mm nut driver, loosen the fan guard screws to allow
an ~1/8” gap between fan guard and back side of the screw head

Conduit Box Position Change
Step 2 – Rotate the fan guard slightly counter-clockwise and remove
completely from the motor

Conduit Box Position Change
Step 3 – Using the external circlip pliers, remove the circlip from the end
of the motor rotor

Conduit Box Position Change
Step 4 – Using the proper Torx bit, remove all four tension rods
completely from the motor
Motor Size Torx Bit
DR.71
TX25
DR.80
DR.90
TX30
DR.100
DR.112
TX45
DR.132

Conduit Box Position Change
Step 5 – Using the plastic headed dead blow hammer, lightly tap the
backside of the conduit box to loosen the stator from the motor flange

Conduit Box Position Change
Step 6 – Using the two flat headed screw drivers, lightly pry the stator
away from the motor flange until a gap of ~1/4” is present
Only pry from the corners to
avoid damaging the parts

Conduit Box Position Change
Step 7 – Rotate the Stator to desired conduit box position

Conduit Box Position Change
Information – SEW Motors allow for 4 different Conduit Box locations
0°/ 90°/ 180°/ 270°
This position is based on viewing the motor from the fan guard as
illustrated below –
0°
90°
270°
180°

Conduit Box Position Change
Step 8 – Reinstall the tension rods by hand and then tighten them in a
diametrically opposed pattern until the stator is completely tight against
the motor flange and the proper tightening torque is reached
1
2
3
4

Conduit Box Position Change
Information – Tightening Torque (Tension Rods)
Motor Size Torque [Nm] Torque lb.-in]
DR71
545
DR80
DR90
980
DR100
DR112
21 186
DR132

Conduit Box Position Change
Step 9 – Tap the fan back into place and reinstall the circlip

Conduit Box Position Change
Step 10 – Reinstall the fan guard by placing it over the fan and twisting
in a clockwise manner until locked into place

Conduit Box Position Change
Step 11 – Tighten the fan guard screws in a diametrically opposed
pattern to the proper torque

Conduit Box Position Change
Information – Tightening Torque (Fan Guard Screws)
Motor Size Torque [Nm] Torque lb.-in]
DR71
3.3 30
DR80
DR90
DR100
DR112
DR132