Denco CAIRplus Operation Manual page 59

CAIRplus
Unit part Frequen-
cy
(months)
Every 3
Routines for
months
all filters
(see page 69et
seq.)
Every 6
months
at least
every
6 to 9
months
continuous
Bag/plate-
measurem
type/fine-par-
ent
ticle filter (re-
fer to page 69)
replace
every 3
months
Every 6
Activated Car-
months
bon Filter (car-
tridges) (see
page 70)
Every 3 - 6
Grease filter
months
(see page 70)
Refer to the relevant maintenance instructions specified in the supplied documentation.
Other filters
Every 12
Heating unit
months
(low pressure
hot water)
(p. page 71)
Every 12
Heater unit
months
with steam
(see page 72)
Refer to the relevant maintenance instructions specified in the supplied documentation.
Direct-fired
(gas) heater
assembly (see
page 72)
PR-2009-0096-GB • Subject to modifications • R8-10/2015
Action
•
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 (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).
•
Replace the filter if the maximum pressure difference is reached.
•
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.
•
Use a cleaning bath to wash filters cells.
•
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.
•
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.
Commissioning and Maintenance
✓
59