14
SILVER M
INSTALLATION
– OPERATING - MAINTENANCE
5.
Commissioning, Service & Maintenance
5.1.
Housing / Equipment
General
Before opening the doors, the ventilator must be switched off, the
electrical power source disconnected and the system allowed to
come to a standstill (minimum 2 minute waiting period).
The pertinent directives and local regulations are applicable to the
electrical installation.
As a matter of principle, the accident prevention regulations must
be observed!
A functional inspection of safety measures should be regularly
carried out at the rated air volume!
The primary equipment operator is responsible to allow only those
persons to work on the equipment, who are familiar with the
fundamental regulations of occupational safety and accident
prevention, as well as these operating, service and maintenance
instructions, and who have been instructed in the handling of the
ventilator.
These operating instructions are to be permanently maintained at
the on-site location of the air conditioning unit deployment.
Commissioning
In order to put the system into service, the equipment must be
completely assembled with all media lines connected and all
electrical components properly cabled.
Close drain valves during operation.
Prior to switching on the system, an inspection of the protective
earth conductor must be carried out.
A functional inspection and performance measurement must be
carried out with a written protocol being established.
Maintenance
-
All equipment chambers should be checked for contamination
and damage, and the chambers cleaned accordingly.
-
Check the processes in free run-out.
-
Check doors for leak-tightness and latches for freedom of
movement.
-
Check duct connection attachments for leak-tightness.
After completing service and maintenance work, all points
applicable to commissioning when switching on the machine must
be adhered to.
5.2.
Ventilator
Commissioning
Prior to commissioning the ventilators, the following prerequisites
must be fulfilled:
-
Connection to the ducting system in place
-
Discharge air and supply air lines open
-
Ducting system and equipment chamber free of foreign objects
and contaminants
-
Fan wheel checked for freedom of movement by manual spin-
up
-
Transport protection has been removed
-
All inspection doors are closed
-
V-belt tension checked
-
The max. speed must be set according to the nameplate on the
drive
-
After installation of the motor and impeller, the overlap
dimension of nozzle and impeller must be adjusted correctly;
otherwise there will be a reduction in output. Refer to the
manufactur
er’s
documentation for the overlap dimension
based on the make, model and size or contact Huber & Ranner.
After completion, a test run is to be carried out to check
performance and direction of motor rotation.
Check ventilator turning direction against the directional arrow on
the housing by briefly switching on the system. In the event of an
incorrect direction of travel, electrical polarity on the motor must be
changed while observing safety regulations.
After obtaining ventilator operating turning speed, immediately
measure the power input from all three phases with doors closed.