IEA Solar Heating and Cooling Programm - NachhaltigWirtschaften.at

IEA SHC Task 38 Solar Air Conditioning and Refrigeration Subtask C Report, Date: 13.01.2009
During part load operation the reduction ratio of the water flow rate must not exceed 1:5 to
avoid clogging, whereas it is even possible to switch off the fan when running at about 10%
cooling load. (Henning, 2004)
2.8 Maintenance
The key requirements for maintaining system efficiency are adequate control of the
recalculating water quality and a programme of maintenance to keep the equipment clean
and in good condition.
Maintenance requirements are given in manufacturer’s instructions or in Guidelines e.g.
EUROVENT 9/5 (2002) or VDMA 24649 (2005).
A typical mechanical maintenance schedule is shown in Table 2-1
Table 2-1 Typical mechanical maintenance schedule (EUROVENT
9/5,2002)
Note 1: Initial start-up and after seasonal shut-down period.
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