lakeair MAX Guard 120 Service manual

Operating and Service Manual
MAX Guard 120

INDEX
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ABOUT Your MAX-Guard
The MAX-Guard air purifier was designed to provide long service. The unit was designed to be
easily repairable. The product warranty is 7 years but you can expect 15 or more years of useful
product life. The MAX-Guard is a heavy duty all air purifier. There are no circuit boards. We use
simple switches that if necessary are easy to replace.
Unpacking
Your MAX-Guard air purifier is shipped on a 26" x 26" pallet. If you ever need to ship your air
purifier back to the factory it MUST be shipped strapped to a pallet. The MAX-Guard was
designed to be easily repaired so it is unlikely to need to ship your unit back.
Care should be taken while unpacking the MAX Guard. The unit is quite heavy and the box
should be placed in the upright position. It may be necessary to slice the corners of the box if you
are unable to lift the unit out.
It is a good idea to get help from another person while removing the unit from the box. Place the
air purifier on a flat surface. The MAX-Guard is a high-volume air purifying system and can clean
the air in a large area. However, to clean the air, the air must get to the unit. Unit location will be
best if the product is centrally located in the room. Use of an additional fan to move the air in
the space may be helpful.
Operation
Plug the line cord into a standard household outlet with 120V AC 60 Hz. Caution should be taken
to operate the unit with the required voltage, as to do otherwise may damage the unit and void
the warranty.
The unit starts in turbo speed. As you rotate the knob clockwise the unit’s blower speed will
begin to slow. Note: blower normally takes 5-10 seconds to start rotating. To turn off: Turn
counter clockwise until you hear a click. Most times you will not need to run the MAX-Guard in
turbo mode. There is sufficient volume of air purification to run the unit at a slower speed with
little noise and still clean the room air sufficiently.
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Getting to Know your MAX-Guard
The MAX-Guard is sold with a number of different filter package options. Not all of the
following information will apply to your product. The filter options available are:
1. Standard HEPA
2. MERV 15
3. Electrostatic
4. HEPA / UVGI
All MAX-Guard filter packages include a pre filter and carbon filter. In the HEPA/UVGI model
the carbon filters are incorporated into the UVC chamber. It is important to regularly inspect,
clean and replace filters as needed. Failure to do so may lead to poor unit performance and
voiding of the product warranty. The Blowers in this unit depend on air flow to keep the cool.
Insufficient air flow may cause the motor bearings to over heat and fail. The Blowers are rated
for 60,000 hours of normal use. Proper maintenance can greatly extend the blower life.
Maintenance
Your LakeAir Air Cleaner is a high quality, precision piece of equipment designed for many
years of satisfactory performance. Adhere to a regular maintenance schedule and no
problems should occur. Your Air purifier should be checked periodically for “dust load” and
cleaned if found to have a large accumulation of dust and lint. Under regular conditions The
HEPA filter should last 1 year and be replaced annually. The carbon filter should be changed
every 3-6 months. When odors are no longer being removed, it is time to replace the carbon
filter. The electrostatic filter cell should be washed every 3-6 months. The prefilter should be
cleaned every 3 months. When used in a smoky environment the MAX-Guard filters should be
serviced more often. The UVGI bulbs (UVGI units only) should be changed every 12 months.

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MAX-Guard Major Parts
Fuse Box 497546
LED Indicator 100139
Potentiometer 371922
Thumb Screw 470122
Safety Switch 497567
Blower 300781
Motor Mount 200478
Universal Plug 497546

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Filter Removal and Installation
The pre filter is the first of 3 filters used in the MAX-Guard. The pre filter removes large
particles from the air stream. It also extends the life of the main filter. The prefilters rating is
MERV 2 and its Part# is 490052. The pre filter is mounted into the door of the MAX-Guard
To remove or re-install lift the end of the prefilter over the filter stop and slide along filter
channel
PreFilter

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Main Filter
The main filter will be one of 4 different filters. Possible options are Standard HEPA
(20 x 16 x 4.75), MERV 15 Media filter (20 x 16 x 4), Electrostatic filter (20 x 16 x 4.5)
or UVGI HEPA (20 x 26 x 2.4) The main filters fit snugly into the filter box and can be
removed easily. All 4 filters have a lip that allows you to get a good hold on the
filters. The filter lip may be a bit sharp so take care not to cut yourself.
Move the filter back and forth with a side-to-side motion drawing it slowly to you.
You can reinstall the filter in the same manner gently moving the filter back into
place. The main filter should touch the carbon filter.
Carbon Filter
The carbon filter is located directly behind the main filter. To remove the carbon
filter, put your fingers on the lip of the filter and gently remove the filter with a side-
to-side motion. Note: The lip is metal and may be a bit sharp use caution not to cut
yourself while removing. In an UVGI unit the carbon filter is incorporated into the
UVGI chamber. You should never run the UVGI filter without a carbon filter both in
front and back of the UVGI element.

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Electrostatic Cell Removing and Re-installing
CAUTION
Always Ground the Cell before handling!
When you open the door to the
Unit all power is cut off. It is
possible however that some
residual electricity is still residing
in the Filter Cell. So, the FIRST
thing to do is ground the voltage
side of the cell. To do this take a
Philips screw driver with an
insulated handle and touch both
the cell side and the ION Bar. This
will dissipate any residual charge.
Remove the ground screw. The
ground screw secures the filter
cell and provides the ground
needed to allow the filter cell to
function properly
Slide the cell out slowly, The Cell
Power Line is on the left hand side.
With the Cell partially out remove
the Power Line Plug. by
disconnecting from the Cell Power
Lug. Then remove the cell from the
air purifier.
To re-install: reverse these steps,
be sure that the power line is with
the cell frame and avoid crimping
the power. Line

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UVGI Filter
The UVGI (ultra violet germicidal irradiation) filter sits behind the main filter and is
surrounded on both sides by carbon filters. The carbon filters serve 2 purposes to 1. Remove
gasses and odors from the air and 2. Block UVC rays from escaping the unit. Carbon absorbs
the UVC energy making it harmless to people and pets. It is imperative that you always have
carbon filters on both sides of the UVGI filter. If there is no carbon filter to help block the
UVC rays some of the rays may escape and cause a danger to people and pets. We test each
unit for UVC ray leakage before shipping.
UVC Bulb Replacement
The UV Bulbs have a useful life of about 9000 hours. They should be replaced every year, While
the bulbs may continue to function, they will do so at a less efficient rate. To remove the bulb
rotate them 90 degrees and remove from the UV Cell Fixture. Reconnect power wires and slide UV
Cell Fixture back into the air purifier.
UV Bulb Replacement
UVC lamps should be treated in the same manner as other mercury-containing devices, such as
fluorescent lamps. Some lamps may need to be treated as hazardous waste and not discarded
with regular waste, although low mercury lamps may be an exception; however, check state
and local codes for proper determination. The U.S. EPA’s universal waste regulations allow
users to treat mercury lamps as reg-ular waste for transport to a recycling facility (EPA 2018).
This sim-plified process was developed to promote recycling. The National Electrical
Manufacturers Association maintains an online list of companies claiming to recycle or handle
used mercury lamp s (NEMA 2009). The most stringent of local, state, or federal regula-tions
for disposal should be followed.
UV Bulb Replacement
UV Bulb & Ballast Disposal

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Special Warnings
This product utilizes UVC Bulbs to provide microbial sanitation. The light
waves are invisible to the human eye but are extremely dangerous. This
unit must be run with all safety devices and switches in working order. Do
NOT By-Pass any safety measures.
This unit must be run with both carbon filters in place. The carbon filters act
as an additional shield from wayward UVC rays.
Caution: Ultraviolet energy.
Protect eyes and skin.
Hazards of Ultraviolet Radiation to Humans
UVC is a low-penetrating form of UV compared to UVA or UVB.
Measurements of human tissue show that 4 to 7% of UVC (along with a
wide range of wavelengths, 250 to 400 nm) is reflected ( and absorbed in
the first 2 μm of the stratum corneum (outer dead layer of human skin),
thus minimizing the amount of UVC transmitted through the epidermis
Although UV is far more energetic than the visible portion of the
electromagnetic spectrum, it is invisible to humans. Therefore, ex-posure
to ultraviolet energy may result in transient corneal inflam-mation, which
can go unnoticed.
Ocular damage generally begins with photokeratitis (inflamma-tion of the
cornea) but can also result in photokeratoconjunctivitis
(inflammation of the conjunctiva [ocular lining]). Symptoms, which may
not be evident until several hours after exposure, may include an abrupt
sensation of sand in the eyes, tearing, and eye pain, pos-sibly severe.
These symptoms usually appear within 6 to 12 h after UV exposure, and
resolve fully within 24 to 48 h. Acute overexpo-sure to UVC radiation may
cause some incapacity due to eye dis-comfort, but this generally abates
after several days, leaving no permanent damage.