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Siemens Building Technologies
CC1N7814en
HVAC Products
31.10.2002
Standards
Conformity to EEC directives
- Electromagnetic compatibility EMC (immunity)
89 / 336 EEC
- Low-voltage directive
73 / 23 EEC
Service notes
·
Maintenance work must be carried out by qualified staff
·
Each time an actuator has been replaced, check to ensure that wiring is in an or-
derly state and that the wires are firmly connected
When replacing an actuator, the following points must be checked and, if necessary,
corrected:
·
Addressing
(assignment
of
functions)
·
Bus
termination
·
Adjustment of the curvepoints of electronic fuel / air ratio control (e.g. with the
LMV51...)
Disposal notes
The actuator contains electrical and electronic components and may not be disposed of
together with household waste.
Local and currently valid legislation must be observed.
Mechanical design
The housing is made of die-cast aluminium.
The cover is made of impact-proof and heat-resistant plastic.
Color of cover: Black
Stepper motor
In connection with the basic unit (e.g. LMV51...): Via the display and operating unit
AZL5X (refer to Basic Documentation P7550).
RAST3.5 terminals (supplied together with the AGG5.720 / AGG5.721).
SQM45...: Spur gears made of plastic with small backlash and permanent lubrication.
SQM48...: Spur gears made of steel with small backlash and permanent lubrication.
Made of black-finished steel, ready fitted to the front of the geartrain (SQM48... uses a
drive shaft made of hardened steel).
The front of the geartrain is used as the mounting surface. The actuator has 4 fixing
holes and 1 elongated hole for the positioning pin.
Alternatively, the actuator can be secured from the side of the controlling element with
3 self-tapping screws.
Replacement
Housing
Actuator
Adjustment of switching
points / position
indication
Electrical connections
Geartrain
Drive shaft
Mounting and fixing
