CAUTION: See **WARNING** on Page 1
Annual inspection of the energy recovery wheel is recommended. ERV units ventilating smoking lounges and
other non-clean air spaces should have energy recovery wheel inspections more often based upon need.
FIGURE 8
16
MAINTENANCE OF THE ENERGY RECOVERY WHEEL
FIGURE 10
ACCESSING ENERGY RECOVERY WHEEL
IN MODELS ERV-251, 361, 521 and 581
Disconnect power to the ERV. Remove access
panel(s) labeled “Energy Wheel Cassette Access”.
UNPLUG the wheel drive motor. The center channel
must be removed to access the energy wheel
cassette. Use a 5/16 inch open or close wrench to
remove the (3) fasteners that hold the center channel
in place.
Pull the cassette halfway out as shown in Figure 8.
When service is complete, reattach the center
channel before putting access panels back in place.
ACCESSING ENERGY RECOVERY WHEELS
IN MODEL ERV-522 AND 582
Disconnect power to the ERV. Remove access panels labeled
“Energy Wheel Cassette Access”, which reveals the energy
wheel cassette. There are additional panels that must be
removed in order to slide out the cassettes. Figure 9 shows
the energy wheel and panel.
UNPLUG the wheel drive motor and pull the cassette halfway
out as shown in Figure 10.
This panel must be
removed before energy
wheel can slide out.
NOTE: ERV model’s 522 and
582 each have two energy
wheels with access panels for
both wheels. Wheels slide out
at opposite corners.
FIGURE 9
