CAIR
plus
Commissioning and Maintenance
PR-2009-0096-GB • Subject to modifications • R8-10/2015
59
Routines for
all filters
(see page 69et
seq.)
Every 3
months
•
Check filters for debris, damage and odour.
•
Clean filter chamber.
Every 6
months
•
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.
at least
every
6 to 9
months
•
Hygiene inspection (DencoHappel recommends maintenance routines and
intervals specified in
VDI 6022
!): Even if the filter shows no visible signs of dirt,
microbial growth and mould may propagate through the filter as result of its long-
term use (in air with low dust content).
Bag/plate-
type/fine-par-
ticle filter (re-
fer to page 69)
continuous
measurem
ent
replace
every 3
months
•
Replace the filter if the maximum pressure difference is reached.
Activated Car-
bon Filter (car-
tridges) (see
page 70)
Every 6
months
•
Replace filter if activated carbon is saturated.
•
Check if filter racks with activated-carbon cartridges are fitting correctly. To
prevent the reduction of service life of the expensive activated-carbon filter,
ensure that the pre-filtering and fine-filtering stages are in proper condition.
Grease filter
(see page 70)
Every 3 - 6
months
•
Use a cleaning bath to wash filters cells.
Other filters
Refer to the relevant maintenance instructions specified in the supplied documentation.
Heating unit
(low pressure
hot water)
(p. page 71)
Every 12
months
•
Check for leak-free condition and possible dirt on the air side.
•
To ensure frost protection, periodically check the safety devices and take proper
precautions such as draining the equipment or adding antifreeze agents.
•
Ensure that pipework connections and mountings are securely fixed.
•
Clean on air side, if necessary (blow through heat exchanger using compressed
air or low pressure water).
•
Air vent.
Heater unit
with steam
(see page 72)
Every 12
months
•
Complete the same steps specified in "Heater assembly (pumped warm water)"
•
Check steam inlet and condensate drain for proper operation.
•
If necessary, check control functions.
Direct-fired
(gas) heater
assembly (see
page 72)
Refer to the relevant maintenance instructions specified in the supplied documentation.
Unit part
Frequen-
cy
(months)
Action
✓
