Denco CAIRplus Operation Manual page 77

CAIRplus
8.11.2 Maintenance of plate-type heat exchanger
DANGER!
Oil and grease (kitchen ex-
haust)
8.11.3 Airflow routing in plate-type heat exchangers
Condensate is attracted to the
cold zone by gravity and air-
flow. If a lot of condensate pre-
cipitates, the risk of freezing
decreases. If little condensate
precipitates, the risk of freez-
ing increases.
Tab. 8-3: Airflow routing in plate-type heat exchangers
PR-2009-0096-GB • Subject to modifications • R8-10/2015
Risk of damage to the unit!
•
Avoid inadmissible high differential pressures between supply air and
extract air.
This could cause damage to the fins.
In this case, DencoHappel neither accepts warranty claims nor assumes liability.
•
If energy recovery is done with a bypass arrangement, check dampers for correct
operation (refer to „Maintenance of dampers blades and shut-off dampers" on
page 80).
•
Check bypass damper for proper operation, if required.
•
Please consider the safety instructions on page 5 and page 55ff when performing
all the described activities!
A plate-type heat exchanger operates without any external, mechanical or electrical
actuators, is not equiped with any moving components and its service life can be neg-
atively influenced only by corrosion.
Carry out the following maintenance steps:
•
Clean as needed according to degree of plate assembly contamination.Use a hair
broom to remove dry dust and fibers at the coil inlet, blow out.
•
Check bypass damper for proper operation, if required.
•
Complete wet cleaning only if a tray is installed and available!
•
Remove oil and grease deposits with hot water and grease-dissolving cleaning
agents.
Condensate is attracted to the
cold zone by gravity and air-
flow. If a lot of condensate pre-
cipitates, the risk of freezing
decreases. If little condensate
precipitates, the risk of freez-
ing increases.
ATTENTION
cold corner
Condensate
Condensate is attracted to the
warm zone by gravity and air-
flow. The risk of freezing
decreases.
Commissioning and Maintenance
1 = heat-dissipating
2 = heat-absorbing
Condensate is attracted to the
warm zone by gravity and air-
flow. The risk of freezing
decreases.
77