29
Airblock FG
1.50
Slimline air handling unit for decentralized, dynamic air treatment
Installation and Operating Instructions
9.4.3 Housing
The galvanised, double-walled housing
5
of the Airblock modules is
maintenance-free. Dirt on the outer housing has no influence on the
operation of the unit. Dirt on the inside of the housing indicates a lack of
maintenance.
Heat recovery modules are fitted with two service hatches
4
on the top and
underside.
9.4.4 Counterflow Heat Exchanger
Counterflow heat exchangers
3
require no maintenance if the system is
properly maintained, i.e. if the filter is monitored and changed regularly (see
page 32). However, please proceed as follows if maintenance or repairs are
required: Open the service hatches and carry out a visual inspection of the
counterflow heat exchanger to check for dirt.
Proceed as follows if a high level of dirt is visible:
1. Unscrew the M6 flat-head screws (2 no.) from the central support and
remove the central support.
2. Remove the condensation tray; loosen the M6 ratchet screws (4 no.).
• Pull out the condensation tray with drain connection from the side
panel on the connection side and remove it in a downward direction.
• Please note that residual water may remain in the condensation tray.
3. Remove the counterflow heat exchanger; – unscrew the wing screws
(2 no.) until the clamping profile can move freely.
• Push the clamping profile to the side via the slots until the counterflow
heat exchanger can be removed in a downward direction.
• Remove and clean the heat exchangers one by one.
• Install the components in the reverse order to removing them.
Note:
The removal of the components described refers to vertically installed
units. Maintenance is carried out in the same way with horizontally installed
units as the service hatches and central supports are installed on both the
top and underside. Only the condensation tray is installed on the underside.
The removal of the condensation tray with vertically installed units is
therefore not applicable.
Cleaning the condensation tray:
Clean the condensation tray and droplet separator (optional) at regular
intervals.
Cleaning the heat exchanger:
• Blast the counterflow Airblock modules with appropriate compressed
air or flush the heat exchanger with a suitable medium to remove
accumulated dust. Proceed extremely carefully as the aluminium fins
bend very easily and then restrict the air flow! (Bent fins have to be
straightened with an appropriate tool).
Summary of Contents for Airblock FG Series
Page 51: ......
