27
Commissioning and Maintenance
Unit part
Interval
(months)
Task
Basic requirements
for all
filters
3 months
• Check filter for soiling, damage and odours.
• Clean filter section.
6 months
• Check whether the maximum permissible pressure differential (see
Guideline RLT 01, for example) or pressure differential specified by
manufacturer has been exceeded; if so, replace the filter.
at least
every
6-9
months
• Hygiene inspection (we recommend the maintenance steps and
intervals specified in VDI 6022!): Even if the filter shows no visible
signs of contamination, fungi and micro-organisms may grow
through the filter during long-term use (in air with low dust content).
Bag/panel/
fine-dust
filters
continuous
measurement
replace
every 3
months
• Replace the filter when the maximum pressure differential is
reached.
Activated
carbon filter
(cartridges)
6 months
• Replace the filter if the activated carbon is saturated.
• Check that filter mounting plates with activated carbon cartridges
are firmly seated. In order not to reduce the service life of the costly
activated carbon filter, make sure that the pre- and fine-filtering
stages are intact.
Grease filter
every 3-6
months
• Wash out filter cells in cleaning bath.
Other filters
Refer to the relevant documentation provided for information on maintenance.
Heater
section
(LPHW)
12 months
• Check for tightness and for possible contamination on the air side.
• If there is a risk of frost, also check the safety devices regularly,
or take appropriate precautionary measures such as draining the
equipment or adding antifreeze.
• Check that pipe connections and mountings are secure.
• Clean air side as necessary (blow through heat exchanger using
compressed air or low pressure water).
• Bleed.
Heater
section
(steam)
12 months
• Carry out tasks specified under “Heater section (LPHW)” .
• Check that the steam inlet and condensate outlet are functioning
correctly.
• Check control functions as necessary.
Electric heater
section
12 months
• Dry clean on air side.
Direct (gas)
fired heater
section
Refer to the relevant documentation provided for information on maintenance.
