Wolf TRK Installation Instructions Manual page 10

Removing faulty tubes
Removing the faulty tube
10
Safety instructions
Safety instructions
WARNING, RISK OF A FALL:
There is a risk of a fall during work on the roof and whilst ascending/descending the
roof. Always observe all applicable accident prevention regulations and use suitable
methods for preventing a fall.
WARNING, RISK OF INJURY:
During the installation on the roof there is a risk that tools, collector parts or glass
splinters fall from the roof and injure people below. Seal off the danger area on the
ground prior to commencing your work and warn people that may be near or inside
the building. Ensure that children are kept away. Unauthorised individuals must not
ascend the roof. Collect, where required, all glass splinters and never let them fall
from the roof.
WARNING, RISK OF INJURY:
Risk of cuts and eye injuries through glass splinters during the removal of damaged
tubes and during their replacement. Always wear protective gloves and goggles during
this kind of operation.
CAUTION, RISK OF BURNING:
Collectors can be very hot if they were exposed to direct solar irradiation prior to the
tube replacement. There is a risk of burning when touching the collector. Only carry
out the replacement when it is overcast/cloudy and never during midday; alternatively
cover the collector with a blanket for at least one hour to allow it to cool down.
Who should replace the tubes?
Only individuals who are familiar with the installation and safe implementation
(contractor) on account of their vocational/professional qualification.
Two people are needed to replace the tubes.
Approved replacement tubes
Only use original TRK replacement tubes from WOLF.
Never attempt to repair faulty tubes and never use tubes other than original
replacement tubes from WOLF. Non-observation can result in system damage that
puts the manufacturer's warranty at risk.
Required tools
The replacement of the collector tubes requires a soft clean cloth, a screwdriver and
respectively SW 4 and SW 6 Allen keys.
Put your system into an unpressurised state
Prior to replacing faulty tubes, the pressure in the solar circuit needs to be neutralised.
For this, proceed in accordance with the system instructions.
Disconnect the system from its power supply and prevent unauthorised reconnection.
Decommission the system electrically and only return it into use once the tube
replacement has been completed as described.
Unpack the replacement tube before climbing onto the roof and take the tube, all
components supplied with it and the grease supplied as well as a soft cloth (not part
of the standard delivery) with you onto the roof.
Initially, release both screws at the faulty collector at the bottom of the Z rail using a
SW4 Allen key, without fully removing the screws. Push the retaining plate below that
secures the collector tube, towards the roof so that the bottom of the tube is no longer
held in place.
TRK
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