Routine Maintenance - Greenheck MiniVent Series Installation, Operation And Maintenance Manual

Routine Maintenance

WARNING
Disconnect all electrical power to the MiniVent prior
to inspection or servicing. Failure to comply with this
safety precaution could result in serious injury or
death. Improper installation, adjustment, alteration,
service or maintenance can cause property damage,
injury or death. Read the installation, operating, and
maintenance instructions thoroughly before installing
or servicing this equipment.
After the MiniVent has been put into operation, an
annual inspection and maintenance program should be
set-up to preserve reliability and performance.
The MiniVent energy recovery ventilator requires
very little maintenance. However, small problems left
unchecked, over time, could lead to loss of performance
or early motor failure. We recommend that the unit be
inspected once or twice a year.
Fasteners and Set Screws
Any fan vibration has a tendency to loosen mechanical
fasteners. A periodic inspection should include checking
all fasteners and set screws for tightness. Particular
attention should be paid to set screws attaching the fan
wheel to the shaft and the shaft to the bearings. Loose
bearing set screws will lead to premature failure of the
fan shaft.
Removal of Dust and Dirt
The fan motor and wheel(s) should be checked for
dust and dirt accumulation. Dirt buildup clogs cooling
openings on the motor housing and causes motor
overheating. Dirt buildup can contaminate bearing
lubricant and collect on fan wheel blades causing loss
of performance or premature failure. Cleaning can be
accomplished by brushing off any dust that may have
accumulated. Under no circumstances should motors or
bearings be sprayed with steam or water. Even filtered
units can accumulate build up and should be checked
when cleaning filters.
Maintenance to these components is achieved through
the provided access panels.
Internal Filter Maintenance
Opening the access
panel provides access
to the one inch deep,
pleated MERV 8 (30%
efficient) filters. These
filters should be checked regularly and cleaned or
replaced as needed.
Energy Wheel
Annual inspection of the energy recovery wheel is
recommended. MiniVent units ventilating smoking
lounges and other non-clean air spaces should have
energy recovery wheel inspections more often based
upon need.
®
Internal
MiniVent Quantity
Filter Size
450
14 x 20 2
750 16 x 20 2
Accessing the Energy Recovery Wheel
Disconnect power to the MiniVent. Remove access
panel labeled "Energy Wheel Cassette Access". Unplug
the wheel drive motor. Pull the cassette halfway out.
Removing the Energy Recovery Wheel
First, remove the drive belt and the collars on both
bearings. On the pulley side of the cassette remove the
four (4) fasteners that hold the bearing support channel
in place. Once the bearing support is removed the
wheel can be pulled from the cassette. To replace the
wheel reverse this procedure.
Recommended Cleaning Procedure
First, remove the energy recovery wheel by following
the instructions.
Only excessive buildup of foreign material needs to be
removed. Discoloration and staining of energy recovery
wheel does not affect its performance.
Thoroughly spray wheel matrix with household cleaner
such as Fantastik ® or equivalent. Gently rinse with
warm water and using a soft brush remove any heavier
accumulation. A detergent/water solution can also be
used. Do not used aggressive organic solvents, such as
acetone. After cleaning is complete, shake the excess
water from the wheel.
Frequency of Cleaning
A regular cleaning cycle must be established for the
energy recovery wheel in order to maintain optimum
sensible and latent energy transfer. In reasonably clean
environments such as schools, offices or retail stores,
the energy recovery wheel should be inspected annually
and cleaned as needed.
For applications experiencing unusually high levels
of tobacco smoke, such as lounges, nightclubs, bars
and restaurants, washing of the energy recovery wheel
every three months may be necessary to maintain latent
energy (water vapor) transfer efficiency.
Failure to follow a regular cleaning cycle for the energy
recovery wheel can result in significant energy transfer
performance losses.
Energy Recovery Wheel Belt Drive
Drive belt(s) should be inspected annually. Normal
operation eventually causes stretching or wear on the
belt(s). Once this occurs the belt(s) should be replaced.
Replacement or spare energy wheel drive belt kits are
available and ship with their own instructions. The serial
number and date code of the energy wheel cassette are
required to obtain the proper replacement belt kit from
the factory. The energy wheel serial number and date
code are located on a label above the drive pulley on
the energy wheel cassette.
Energy Recovery Ventilator 13