Energy Recovery Wheel
CAUTION
Installation and maintenance must be performed only by
qualied personnel who are experienced with this type of
equipment and familiar w th local codes and regulations.
WARNING
Moving machinery and electrical power hazards. Can cause
severe personal injury or death. Disconnect and lock off all
power before servicing equipment.
CAUTION
Sharp edges are inherent to sheet metal parts, screws, clips,
and similar items. Contact with these edges may cause
personal injury. Exercise caution when servicing equipment.
DANGER
Hazardous voltage. Will cause severe injury or death.
Disconnect electric power before servicing equipment. More
than one disconnect may be required to de-energize the unit.
Servicing Control Panel Components
Disconnect all electric power to the unit when servicingcontrol
panel components. Before servicing, always inspectunits for
multiple disconnects to ensure all power is removedfrom the
control panel and its components.
Bearings
Enthalpy wheels are provided with "no maintenance" inboard
bearings, requiring no maintenance during the life of the
equipment.
Drive Motor
The drive motor should require no maintenance. The wheel
drive motor bearings are pre-lubricated and no further
lubrication is necessary. The wheel drive pulley is secured to
the drive motor shaft by a combination of either a key or D slot
or setscrew. The set screw is secured with removable locktite
to prevent loosening. Annually conrm set screw is secure.
Drive Belts
The wheel drive belt is a urethane stretch belt designed
to provide constant tension through the life of the belt. No
adjustment is required. Inspect the drive belt annually for
proper tracking and tension. A properly tensioned belt will turn
the wheel immediately after power is applied with no visible
slippage during start-up.
Belts are multilink with individual links constructed of a high
performance polyurethane elastomer, reinforced with multiple
plies of polyester fabric. This belt provides a strong, yet
exible belting. The multilink feature provides easy servicing or
replacement.
Seals
The seals are designed to be durable and require no
maintenance other than adjustment. If seals become worn or
damaged they may easily be replaced. The seals are made to
clip onto the cassette or metal post easily.
Variable Frequency Controller
No maintenance should be required on the VFD. Should
problems with the VFD develop, consult the VFD service
manual that accompanied your order.
Wheel
The enthalpy wheel is designed to last the life of the
equipment. It is protected by an ASHRAE 30% lter to keep
dust and dirt from the heat transfer surface. The wheel is
somewhat self cleaning through its normal action of rotating
in and out of countercurrent air ow 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 dirt,
the wheel may be removed from the cassette and washed with
water following wheel removable procedures outlined below.
maInTenanCe
www.DaikinApplied.com 107 IM 1058-8 • MAVERICK II ROOFTOP SYSTEMS
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