CAIR
plus
Commissioning and Maintenance
PR-2009-0096-GB • Subject to modifications • R8-10/2015
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8.5.2 Routine maintenance for all filters
DANGER!
•
Please consider the
safety instructions
on page 5 and page 55ff when performing
all the described activities
!
As a general requirement and depending on the operating conditions, all filters must
be checked at regular intervals and replaced if necessary. Carry out the following main-
tenance steps:
•
Check filters for debris, damage and odour.
•
Clean filter chamber.
•
Check if the maximum allowed pressure difference (refer to RLT 01 guideline -
German Association of HVAC Manufacturers) or pressure difference specified by
manufacturer is exceeded, and replace the filter if necessary.
Hygiene inspection
Observe current legal regula-
tions and standards!
DencoHappel recommends
maintenance steps and inter-
vals specified in VDI 6022
Even if the filter shows no visible signs of dirt, microbial growth and mould may propa-
gate through the filter as a result of its long-term use (in air with low dust content).
•
The filters must be replaced regularly (at least every 6-9 months), even if dirt is
barely visible.
8.5.3 Maintenance of bag filters/panel filters/fine-particle filters
DANGER!
•
Please consider the
safety instructions
on page 5 and page 55ff when performing
all the described activities
!
Carry out the following maintenance steps:
•
Check filter and filter frame for dirt, corrosion and damage, replace if necessary.
The end pressure difference of bag filters varies, refer to the relevant technical data for
details (see filter identification plate).
•
Replace the filter if the maximum pressure difference is reached.
Danger of inflammable materials!
There is a risk of inflammable filter material that could cause fire.
Depending on the filtered substances, used filters pose a significantly higher fire
hazard.
•
Keep filters away from open fire!
Notice!
DencoHappel recommends to always operate the unit with an installed filter. Keep
a set of spare filters on stock as well.
•
Prevent the filter surface from damage, as this can destroy the filter during
service, and no warranty can be assumed for the filter grade.
ATTENTION
Risk of environmental damage!
Heavily contaminated filters pose a health risk and may adversely affect produc-
tion processes.
•
Depending on the filtered substances, dirty filters should be treated as
special waste and must be disposed of in an environmentally-friendly
manner and in accordance with current codes and regulations.
