6 x Maintenance
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BA ROTEX HPSU compact 2 - 04/2011
• Carry out a function check of the HPSU compact, and all installed accessory components (booster, backup heater,
Solaris installation...) by checking the temperature display and switch states in the different operating modes.
• If a Solaris system is connected and is in operation, switch it off and empty the collectors.
• When operating the HPSU compact in a bivalent-alternative system; switch off all heat generators and deactivate the bivalent
control unit.
• Visual check of general condition of the HPSU compact.
• Visual check of the water storage tank level (filling level indicator).
Î If necessary, replenish water; determine the reason for the low water level and remedy it.
• Check the connection of the safety overflow and drain hose for leaks, free drainage and gradient.
Î If necessary, clean the safety overflow and drain hose and relay it; replace damaged parts.
• Visual check of connections, lines and safety pressure relief valve. In the event of damage, determine the cause.
Î Replace defective parts.
• Check all electrical components, connections and cables.
Î Repair damaged parts or replace them.
• Check the water pressure of the cold water supply (<6 bar).
Î If necessary, fit or adjust pressure reducer.
• Check system water pressure on pressure gauge on HPSU compact.
Î You may need to replenish the water in the heating system until the pointer of the pressure gauge on the HPSU compact
returns to the green zone.
• Clean plastic surface of HPSU compact with a soft cloth and mild cleaning agent. Do not use cleaning agents containing
aggressive solvents, as this will damage the plastic surface.
6.3 Confirmation of servicing
• Complete the confirmation of servicing in the supplied operating manual of the HPSU compact.
The HPSU compact is practically maintenance free as a result of its design. No corrosion protection equipment
is required (such as expendable anodes). This means there is no need for maintenance work such as changing the
protective anodes or cleaning the inside of the storage tank.
– Check the filling level, if necessary replenish water.
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