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9
Service
De-energize and lock the solar control
WARNING
and pump to prevent them from
accidentally being switched back on
again by mistake before any maintenance
or repair work.
Service is not permitted until components
and solar liquid have cooled.
Air separator
■ The solar station features an air separator. Open bleeder
valve until the solar liquid exits free of air bubbles.
■ Check system pressure and top off solar liquid if required.
Flat seal screw connections
■ The screw connections may have to be retightened as the
seals settle. Note tightening torque requirements in the
"Technology: installation and commissioning" section of
this manual.
Clamp ring screw connections
■ Use an open-ended wrench to retighten clamp ring screw
connections if required (approx. 33 Ft lb).
■ When tightening the clamp ring screw connection, use two
wrenches–one wrench to prevent the pumping station from
turning.
Disassembling the solar station
(Wall bracket, for repairs and service only)
■ Use a screwdriver or similar tool to remove the retaining
springs to the front.
The solar station is now loose. Ensure
CAUTION
that it does not slide forward and out
of the wall bracket.
14
SL-PS Installation & Operation Manual
Draining the system
■ Fit corresponding drainage hoses on to the filling and
flushing connections and guide these into a collecting
vessel.
■ Open the check valves by placing the red and blue
thermometer handles in their 45° position.
■ Open the fill/flush valve (return) under the pump.
■ Open the fill/flush vlave (forward flow) on the safety group.
■ Optional: Open the fill/flush valve at lowest point of
system, as close to the tank connection as possible.
■ Open bleeder equipment at highest point (above
collectors).
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