SOMFY LT50 CMO Installation Instructions

Fig. 1
C
B =A-(C+D)
Tube Diameter
Less than 3.35"
(85mm) mm)
A
B
Fig. 2
Tube Notch
Fig. 3
Notch: LT50 Length = 25 mm
LT60 35 mm
Raised Key
Raised Key
Notch
Raised Key
R
Fig. 7
LT50/60 CMO Motor
Installation Instructions
D
B
A
Tube Diameter
Greater than 3.35"
(85mm)
Tube Notch
A B
Width = 4 mm
8 mm
Fig. 4
Fig. 5
Fig. 6
1. TUBE PREPARATION
!
Cut the tube to the required length (B), taking into account
the width of the installation (A), the motor end clearance
(C), and the idler end clearance (D). (See Fig. 1)
!
USE FORMULA TO DETERMINE MEASUREMENTS.
!
Remove all burrs from the ends of the tube and ensure that
the inside of the tube is clean.
!
For all round tube sizes up to 3.35" (85 mm) inclusive,
notch the tube on the motor end to the dimensions A & B.
(See Fig. 2)
!
For all tubes over 3.35" (85 mm) form a tongue in the motor
end of the tube by making two cuts 1" (25 mm) apart and
.75" (20 mm) deep. (See Fig. 3)
2. PREPARING THE TUBULAR MOTOR
!
Place the crown wheel over the body of the motor. Slide
the slot in the motor crown over the raised key on the
motor's limit switch unit. (See Fig. 4)
A crown is not necessary on
2.0" Tube when used with LT50, and
Tube
2.5" with LT60.
!
Fit the drive wheel on to the output shaft of the motor.
There are two types of LT drive wheels: Removable or
"SOFT CLIP" type, and fixed or
"SOFT CLIP" drives are
2.0", 2.5", and 2.75" diameters. The drive wheel can be
removed by physically pulling it off the motor shaft. For the
ease of identification all
The "HARD CLIP" drives can only be removed from the
shaft by pressing the two clips inward at the same time.
The motor must be out of the tube in order to have access
to the clips. These drives are
3. FITTING THE MOTOR INTO THE TUBE
For round tubes: Measure the drilling length R according to
the motor type listed in the table below.
the tube ensuring that the notch at the end of the tube
slides over the raised key on the crown wheel.
6) Secure the drive wheel to the tube using four 7/32 steel
pop rivets or four 1/4 DIA. screws.
other side of the tube and secure it with three steel pop
rivets. Use only fasteners with steel grades SAE 5 or higher.
Metric fasteners must be grade 8.8 or higher. (See Fig. 7)
LT50 CMO
R
MOTOR
in. / mm
TYPE
525A2 CMO 22.80/579
530R2 CMO 22.80/579
535A2 CMO 25.55/649
540R2 CMO 25.55/649
550R2 CMO 25.55/649
"HARD CLIP" type. The
only available for round tubes in
"SOFT CLIP" drives are BROWN.
BLACK.
Fit the motor into
(See Fig. 5,
Fit the end plug into the
LT60 CMO
MOTOR
TYPE in. / mm
660R2 CMO 24.8/630
26.2/665
680R2 CMO
26.2/665
6100R2 CMO
R