INSTALLATION & MAINTENANCE INSTRUCTIONS
PREMA
CEILING VOID ENERGY RECOVERY VENTILATION UNITS
30
Service
In order to maximise the useful life of the equipment and keep it operating in good order, the maintenance checks and
tasks detailed in these instructions should be performed as part of a regular and routine service schedule. Under normal
operating conditions, the following schedule is recommended:
Maintenance Item
Frequency
6 Months
12 Months
Filter Sets
✔
Counterflow Energy Recovery Block
✔
Condensate Drip Trays and Drains
✔
Fans
✔
Damper
✔
Damper Actuator
✔
Internal and External Surfaces
✔
Controls / PCB / Fuses
✔
Secure Nuts, Bolts and Fixings
✔
Spares parts are available by contacting the Elta Group Building Services sales office. Enquiries should include details off
the identification label.
Filters
There are two air filter sets fitted in the equipment, one at the fresh air intake connection and one at the extract air
connection.
The filters are disposable and the full set should be changed when they are damaged, heavily soiled with dust, or when the
signals from the differential pressure switches indicate a dirty filter condition.
Counterflow Energy Recovery Blocks
The Counterflow Energy Recovery blocks are protected from contamination by upstream filters, and therefore should in
normal circumstances require only periodic inspection to ensure that the face is not blocked by any debris, dust or dirt
build-up.
The blocks are constructed with non-corroding aluminium alloy material that is resistant to sea water and extremely
hygienic thanks to complete and optimised drainage of condensate. They are designed to be maintenance free, other than
basic cleaning in situ, and built to last the life of the unit.
It is possible to clean the unit with compressed air in the case of dust deposits or by spraying with a mild detergent solution
for grease deposits. Solvents, strong alkaline, acidic or any products that may be aggressive to aluminium should not be
used.
Maximum cleaning water temperature not to 50°C.
The cell is not designed to be removed for cleaning.