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TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
TECHNICAL PASSPORT. INSTALLATION and OPERATION MANUAL
8. COMMISSIONING
Must be performed by an
authorized service technician/
service shop for such operations.
Before commissioning of solar collector
into operation, check:
- The air-tightness of all connections
- System air purging
- Insulation of pipelines: must be UV
resistant and temperature shock proof
as well as bird- and rodent-proof in
structure.
- Electrical connections: controller, pump
9. DAMAGE PREVENTION AND SERVICE
MAINTENANCE OF COLLECTORS
Any changes in design or con-
struction of solar collectors are
strictly prohibited. Detection of
such makes warranty null and
void. As changes in design and
construction shall be considered
the removal of any manufacturer-
embedded items, incorporation
of additional components in the
collector, replacement of any com-
ponents with similar or analogues
not explicitly approved by the
manufacturer.
9.1.
It is recommended that yearly
maintenance be carried out by
an authorized service. All service
maintenance must be logged on the
warranty card.
- Checkup of operating pressure, pump
operation, hydraulic connections.
- Checkup of heat carrier fluid,
replacement thereof.
9.2. Cleaning of collectors from dust
deposits, fallen dry leaves and twigs
Keeping the collector surface (type PK
or VTC) clean is a prerequisite for good
performance. A dusty collector (due to
lack of rainfall, dusty ambience) can be
cleaned up in early morning hours before
it is heated by sunlight using:
- Warm water, soap/glass cleaner solution
and a soft cloth when the collector is
mounted in an easily accessible and safe
place;
- Pressurized water jet when the collector
is mounted in a hardly accessible place.
9.3. Replacing a broken tube on VTC type
heat pipe collector
In any event of broken collector tube
it needs to be replaced as quickly as
possible. Despite the damaged tube, the
collector can still operate, but its efficiency
will drop. Clean broken glass to prevent
future injuries. We recommend that
replacement of the broken collector tube
be carried out by an authorized installer /
service observing all safety norms.
10. WARRANTY TERMS
Failure to observe the installation
and operating requirements de
-
scribed in the manual and the ser-
vice booklet voids the warranty.
10.1. Manufacturing defects and
materials guarantee
NES Ltd. expressly guarantees that
