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9.7
Energy recovery systems
The manual of the component manufacturer must be read and considered for cleaning works.
9.7.1
Plate heat exchangers
Plate heat exchangers are made of highly corrosion-resistant high-grade aluminum and have no
drive or moving parts. The lifetime is nearly unlimited, as long as the differential pressure between
the plates does not exceed the maximum allowed.
The only maintenance required is cleaning:
-
Clean the condensate drain, control and fill the U-trap. The plate pack is normally self-cleaning.
o Remove fibers and dust at the exchanger inlet with a brush.
o Clean oils and fats with hot water, household cleaners or degreasing steam.
If there is a bypass damper, please refer to chapter 9.5 (Dampers).
-
Attention!
Heat exchanger must not be damaged mechanically or chemically through clean-
ing.
9.7.2
Heat wheels
Check the drive unit according to the manufacturer's instructions.
In general:
-
The construction of the storage mass is nearly completely self-cleaning.
The rotor can be cleaned with compressed air, water, steam and grease-dissolving household
-
cleaning products.
The sliding seal, which seals the rotor, is to be checked and adjusted if necessary.
-
9.8
Maintenance plan
The maintenance intervals specified in Table 6 are based on empirical values for normal operating
conditions. They are designed for continuous operation (24 hours / day) in moderate temperate cli-
mates and low dust areas, such as in offices or shopping malls. Widely differing operating condi-
tions, particularly with respect to air temperature, humidity and dust can significantly shorten the in-
tervals.
56/115
Ch = Check, Cl = Clean, M = Maintenance
V07-19.0
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