17
MAINTENANCE
The filters need to be checked and cleaned once a month or when they appear dirty.
PRACTICAL
TIPS
• To prevent electrical
shock, check that the
unit is unplugged
before doing any
repairs or maintenance.
• A yearly inspection is
recommended to
ensure the efficiency
and trouble-free use of
your system. Run
through the system
and verify the different
operating modes.
FILTERS
The motor
- The motors
are factory balanced and
lubricated for life. They
require no maintenance.
The unit
- The inside of
the unit should be vacu-
umed yearly. Be careful
not to damage any of the
mechanical components
and electrical connec-
tions.
Condensation Panel
-
The condensation panel
should be cleaned yearly
or as needed.
The drain and drain line
-
Units with drain hoses
should have their line and
connection checked regu-
larly.
Outside hoods
- The out-
side hoods need to be
checked every season to
make sure there are no
leaves or insects blocking
the airflow. Check regu-
larly that there are no pol-
lutants near the intake
hood. Make sure they are
clear of any snow accu-
mulation during the winter
months.
Clean core on a average every 3-6 months.
a) Open access door & remove filters.
b) Carefully grip ends of core and pull evenly outward. Core may be snug, but
will slide out of the channel.
c) Vacuum only ERV-XI 450 core (
do not wash
).
d) Wash HRV-XI 450 core in warm soapy water.
e) Install clean core
f) Install the clean filters
g) Replace access door
Note
: Core installation label on the outer end of the core.
To install the clean Core and Filters.
a) first mount the bottom flange of the core guide into the bottom channel approximately 1/4” (6mm)
b) mount the left or right side flange of the core guide approximately 1/4 “ (6mm) followed by the other side
c) mount the top flange of the core guide into the top channel approximately 1/4” (6mm)
d) with all four corners in place and the core straight and even, push hard in the centre of the core until the core
stops on the back of the cabinet.
CAUTION
MAKE SURE UNIT IS UNPLUGGED BEFORE ATTEMPTING ANY MAINTENANCE WORK
The following components should also be inspected regularly and well maintained.
FIXED PLATE
HRV-XI 450 (Polypropylene Core) Wash OK & ERV-XI 450 (Enthalpy Core)
Vacuum Only
WHEEL
ERV-WI 500 (Enthalpic Wheel)
Wash OK
Seals
– The seals are designed to be durable and require no
maintenance other than adjustment, but if seals become worn
or damaged they may easily be replaced. The seals are made
to clip on the cassette or post metal easily.
Wheel
– The wheel is somewhat self cleaning through its nor-
mal action of rotating in and out of countercurrent airflow
streams.. If the wheel becomes dirty, it may be cleaned by
blowing out the unit with compressed air (20 psig maximum).
In cases of severe uncleanliness, the wheel may be removed
from the cassette and washed with water following wheel
removable procedures outlined below:
1. Open ERV-WI 500 access door so that the front or back of the cassette may be easily
accessed.
2. Support the wheel from the bottom
3. If the unit is equipped with an internal bearing, unbolt the shaft screw on both sides of
the shaft. Unbolt one post completely and remove post. Remove the shaft clips at the
face of the hub from both sides of the shaft. Remove the shaft. Roll the wheel out care-
fully.
4. With the wheel out, wash the media carefully with water. Once clean, allow the media
to dry out for several hours or days if necessary.
5. Reinstall using the reverse procedure. Run the unit. It may take several hours for the
desiccant to dry out and for the wheel to perform normally.
