Commissioning and Maintenance
© robatherm 71
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Hydraulic Set
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Commissioning
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Caution
Observe general safety instructions on page 3!
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Caution
Only use fluid with ambient temperature when charging or purging as there is a risk of
scalding/frostbite.
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Caution
To avoid burns, do not touch hot/cold surfaces.
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Only use approved parts with ATEX units. All electrical parts must be earthed.
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Ensure sufficient distance between max. surface temperature of the heat exchanger due to
temperature of the medium and minimum ignition temperature of any flammable mixture
which may be present in accordance with EN 1127.
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Attention
Do not exceed permissible pressure range.
Observe design data sheet.
In HRS control equipment (e.g. run around coils heat recovery system) the quantity of anti-
freeze is to be determined in relation to the lowest outside temperature (note
manufacturer’s information).
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Inspections
Check:
Correct installation of all components.
Inlet outlet connections for function (counter flow principle).
Firm seating of all bolts and glands.
Easy movement of all valves, slide dampers and baffles.
Charging
The system must be rinsed (removal of contaminations) according to VDI 2035 and should
be filled with the heat exchanger fluid named in the design data sheet to the correct
concentration. Water quality to VDI 2035. This control equipment charging process can also
occur together with the charging of the piping system. During charging check connection
points for leakage; retighten screws and glands if necessary.
Venting
When charging the system according to VDI 2035 the control equipment and the system
should be vented carefully at the highest point of the system. Open the venting recovery
device provided for this purpose. This is also valid for pumps with venting devices (e.g. high
pressure centrifugal pumps in high efficiency run around heat recovery systems). Observe
manufacturer’s instructions.
In incompletely vented systems with pumps, air pockets may cause capacity reduction and
severe damages of the pump.
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