7
5. Maintenance
5.1 Bi-Monthly Maintenance
Bi-monthly maintenance should include:
A
IR
F
ILTERS
The standard foam filters are washable. Under normal conditions it is recommended that they be cleaned every two months.
More frequent cleaning may be required under extremely dirty operating conditions. Use a vacuum cleaner to remove the heaviest
portion of accumulated dirt, then wash with warm water.
A medium efficiency filter for the supply air stream is available from your supplier. This filter is disposable and should be replaced when it
becomes dirty.
6LC, V6LC, 12LC and V12LC units
7000 unit
Washable foam filters
Washable foam filters
MEF filter - optional
MEF filter - optional
D
RAIN
P
ANS
AND
I
NTERIOR
OF
U
NIT
With the filters removed from the unit, the foil faced insulation surfaces and the drain pans should be wiped clean with a soft cloth and mild
cleaning solution. Also ensure that the drain fittings are free from dirt and are draining freely.
WARNING
!
Risk of electric shocks. Before performing maintenance, always stop the unit, then turn power off at service
panel. The wearing of safety glasses and gloves is recommended when handling unit components to prevent
injuries caused by sharp edges.
1
1
2
VL0001
1 or 2
1
VL0002A
4. Airflow Measurement and Balancing
Once installation is complete, the supply and exhaust airflows should be balanced. This will ensure proper operation and a good quality
installation.
A well designed duct system with properly sized duct runs and equal static pressure losses of both the supply and exhaust will aid in
balancing the unit. However, it will be necessary to take flow measurements with the proper equipment to ensure a balanced system.
Before proceeding with balancing, all windows, overhead doors and walk-in doors should be closed and exhaust systems should be
turned off.
