HEPACART Classic HC55U18.ETL User manual

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Version: 2022.2
Safety, Operations, and Maintenance Manual
HEPACART® or DUSTBUGGY® Mobile Containment Cart
The HEPACART® and DUSTBUGGY® family of products are class leading mobile containment carts that provide dust
containment and environmental protection. The heavy-duty aluminum frame and retractable enclosure system in
conjunction with an advanced HEPA filtration system contain contaminants such as dust, mold spores, and pollen.
HEPACART® Classic Models
HEPACART® AutoLift Models
DUSTBUGGY® Models
HC55U18.ETL
HC55U1821A.ETL
DB55U18, DB55U1821A
HC74U18.ETL
HC74U1821A.ETL
DB74U18, DB74U1821A
HC74UX18.ETL
HC74UX1821A.ETL
DB74UX18, DB74UX1821A
*Safety information, sequence of operations, and maintenance information contained in this manual are applicable for legacy models -L, -M, and -H.
SAFETY INSTRUCTIONS
WARNING! Electric shock hazard, rotating fan, and
breathing hazard. Unit must be grounded. To reduce
risk of electric shock do not expose to water or rain.
Unplug unit prior to service or cleaning.
•Do not exceed maximum receptacle load as
labeled.
•Do not use electrical outlet or power tools that
are wet or have been exposed to water.
•Inspect the power cord prior to use. If cord or
reel is damaged, do not use. Always grasp the
plug (not the cord) to unplug.
•Only plug the power cord into a matching
grounded outlet. Do Not remove third prong.
Do not use with adapter. Do not use extension
cord.
•Do not use power cord to maneuver the cart.
Use the equipment in conjunction with on-site safety
protocols and regulations. Always inspect work area for
hazards and be aware of your surroundings.
•Confirm work site regulations before use
•Always use swivel locks when moving the unit
with only one person.
•Notify bystanders when using unit in crowded
areas.
Keep away from open flame appliances such as
gas or propane water heaters, furnaces, etc.
Pressure differences could blow out flame or
backdraft combustion products.
•Do not operate unit or power tools inside of the
unit in the presence of flammable liquids,
gasses, or other flammable environments.
•Keep retractable enclosure away from open
flame.
Prior to use always inspect containment cart for
damage. Inspect wheels, brakes, swivels, and casters.
Stay alert and use caution, avoid unnecessary risks at all
times.
•Do not use while under the influence of drugs,
alcohol, or medication.
•Wear appropriate attire for work being
performed in accordance with company and
facility protocols.
•Do not wear loose clothing, jewelry, or other
items while working inside of the mobile
containment cart.
•Wear proper personal protection equipment as
required.
•Always lock all (4) four casters before entering
the cart.
•Ensure retractable enclosure is fully raised to
the ceiling and locked before entering the cart.
•Do not stand on negative air machine assembly.
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USAGE AND CARE
This appliance is not intended for use by persons
(including children) with reduced physical, sensory or
mental capabilities, or lack of experience and
knowledge, unless they have been given supervision or
instructions concerning the use of the appliance by a
person responsible for their safety.
Children should be supervised to ensure that they do
not play with the appliance.
•Always follow provided operation manual and
instructions.
•Inspect and change the pre-filter at regular
intervals (weekly, monthly, quarterly),
depending on usage and application. More
frequent pre-filter changes extend the life of
the HEPA filter.
HEPACART recommends the use of PureGreen24 citric
acid based cleaner and disinfectant for everyday
cleaning of all surfaces. See below for additional
cleaning options for more set-in stains.
Window Care: Only use polycarbonate compatible
cleaning agents to clean the windows on the
HEPACART® or DUSTBUGGY®.
Retractable Enclosure Care: Retractable enclosure is
made using healthcare fabrics offering “clean-in-place”
convenience. Use neutral soap suds and lukewarm
water. Rinse and allow fabric to dry. For hard to clean
spots household/vinyl cleansers and/or a soft bristle
brush can be used. DO NOT USE HARSH CLENSERS OR
SOLVENTS.
Hard Sided Enclosure Care: Do not use abrasive or
highly alkaline products, scrape walls with squeegees,
razor blades, or other sharp instruments. Do not clean
while booth temperature is elevated or when a high
percentage of humidity exists.
If scratching should occur, minor abrasions can be
removed or minimized by using a mild automotive
polish. Examples include Johnson Paste Wax, Mirror
Glaze Plastic Polish, Plexus, and Novus Plastic Polish #1
and #2. Always test the chosen product on a small area
before overall use.
MAINTENANCE
For units with integral HEPA filtration, the HEPA filter
has been tested and certified for one year. The HEPA
filter provided with the HEPACART® is a robust, long
lasting filter that has been tested and certified at the
time of shipment. The HEPA filter, however, is made
from a paper media that must be protected if there is
chance it will be exposed to moisture.
Before Each Use: Inspect for damage to electrical cord,
casters and wheels, retractable enclosure, and negative
air machine. Clean up any debris left by the previous job
and check negative air machine for a clean pre-filter.
Short term intervals: Inspect pre-filter for accumulated
dust and debris that could restrict airflow through the
filter. If filter is damaged or visibly dirty, change the pre-
filter.
Long term intervals: Whenever damage is suspected or
at a decrease in airflow, the HEPA filter should be re-
certified. Testing is recommended annually, at a
minimum.
When using in a healthcare application or for
remediation: To mitigate the risk of cross-
contamination, replace both of the filters and clean the
unit thoroughly. Use a damp wipe and vacuum as
required. Allow unit to dry before installing new filters.
CHANGING THE FILTERS
Prefilter: Change the pre-filter whenever it shows
accumulation of dust and debris. Always change the
pre-filter between jobs where dangerous contaminants
were present.
1. Unplug the power cord from line voltage power
source.
2. Remove the (2) two screws from the pre-filter cover
on the top of the negative air machine housing.
3. Remove the pre-filter cover.
4. Grasp the pre-filter and pull up to remove.
5. Insert new pre-filter from the top. (minimum MERV
8 pre-filter)
6. Reposition the cover and re-install (2) screws.

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HEPA Filter: Re-certify HEPA filter on an annual basis
and replace if shows signs of damage or reduced
airflow. Always change the HEPA filter between jobs
where potentially dangerous contaminates are present.
1. Unplug the power cord from line voltage power
source.
2. Remove the (2) two screws from the pre-filter cover
on the top of the negative air machine housing and
remove the pre-filter cover.
3. Release (4) four clasps (2 on each side) of the fan
housing.
4. Remove fan housing.
5. Remove the dirty HEPA filter from the filter flange.
6. Carefully install clean HEPA filter. Note direction of
airflow and ensure filter media has upstream and
downstream gaskets.
7. Replace fan housing.
8. Reattach the (4) four clasps (2 on each side) to
secure housing to cart.
9. Reposition the pre-filter cover and re-install (2)
screws.
10. Test for proper operation and have the unit re-
certified.
a. Contact HEPACART® customer service
representative for approved certifiers in
your area.
TROUBLESHOOTING
FAULT
CAUSE
SOLUTION
Unit does not
operate
GFCI Tripped (red
light on receptacle)
Firmly press
“RESET” button on
GFCI receptacle.
No Power (no light
on GFCI receptacle)
Make sure unit is
plugged in. Check
for power at outlet
Press “12” amp
breaker to reset
Low Airflow
Dirty Pre-Filter
Change Pre-Filter
Dirty HEPA Filter
Change HEPA Filter
Lighting Does Not
Work
No Power
Plug in lighting
power supply.
Check GFCI for fault
condition
HALO or Shelf Light
Not On
Check plug on back
side of control box
Switch not turned
on
Turn on switch
Curtain Billowing
Inward
Excessive negative
pressure
Reduce fan speed
*For problems not listed in this table reach out to your HEPACART® sales
representative for assistance.
STORAGE AND TRANSPORTATION
Always use care when transporting the HEPACART® or
DUSTBUGGY® mobile containment cart. If being moved
by one person always engage the two swivel locks. Prior
to moving containment cart through a doorway ensure
extension poles have been lowered.
•When transporting on uncovered trucks take
care not to expose to moisture. Additionally, be
sure to strap enclosure down over top.
•Do not store outdoors.
•Use care when loading and unloading from
trucks. Use of a liftgate is recommended.
CUSTOMER RECORD
The model and serial numbers of this product are
located on a blue and white sticker just below the
window on the end of the unit which does not have a
door. Complete the warranty activation upon receiving
the Warranty Activation Email. Also, note the model
and serial numbers of your unit in the space provided
below. Retain this book as a permanent record of your
purchase.
Model Number: __________________________
Serial Number: ___________________________
Date Purchased: __________________________
If you wish to have an electronic copy of these
instructions, please contact HEPACART, Inc Infection
Control Technologies at 913-789-9590 or at
[email protected]om. Please have your model number
and serial number ready for any correspondence.
Thank you for purchasing a HEPACART® or
DUSTBUGGY® Mobile Containment Cart. Using the
product correctly and safely can significantly reduce
dust and pathogen contamination to high-risk areas.
Use of your HEPACART® or DUSTBUGGY® as prescribed
by this manual will provide many years of mobile,
portable dust containment.

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SEQUENCE OF OPERATIONS
HEPACART® offers a Certification Training Course which
can be found at www.HEPACART.com/training
All Classic Models; HEPACART® and DUSTBUGGY®
1. Position HEPACART® or DUSTBUGGY® under the
ceiling tile to be removed.
2. Lock all (4) four brakes on the casters at each
corner.
3. Secure the operational area when required by
facility guidelines.
4. Raise the enclosure
a. For 1 person: Start with the upper section of the
pole in raising the retractable enclosure. Extend
both poles on one side by first using a quarter
turn counter clockwise to unlock. (Figure 1) Then
raise and twist clockwise to lock (about 1/3 to
2/3rds of the way up) Move to the other side
and raise about 2/3rds of the way up. Move back
to the other side and raise to the ceiling.
Complete the other side. Make sure to compress
the springs at the top of each pole to ensure a
good seal. Utilize the second pole section as
required to reach the ceiling height after the first
section has been fully extended.
Hand tighten the poles with only moderate
pressure.
Figure 1
b. For 2 people: Both workers should start with the
upper pole section. Extend both poles on both
sides simultaneously by first using a quarter turn
counter clockwise to unlock. Raise the
retractable enclosure and twist to lock. Repeat
the unlock, raise, and lock sequence until
enclosure is at the ceiling. Make sure to
compress the springs at the top of each pole to
ensure a good seal. Utilize the second pole
section as required to reach the ceiling height
after the first section has been fully extended.
Hand tighten the poles with only moderate
pressure.
5. Plug HEPACART® or DUSTBUGGY® into a grounded
outlet. Pull enough cord from the reel to ensure
cord lays flat on the floor to avoid a tripping hazard.
a. If using the DUSTBUGGY® with an external
negative air machine connect ductwork between
the export adapter and negative air machine
inlet. Turn negative air machine on to desired
setting.
b. Turn on HEPACART® negative air machine using
the switch located on one end.
6. Open the door on one end by pulling on the
installed latch.
7. Insert ladder into the HEPACART® or DUSTBUGGY®.
a. For a shelf ladder or extension ladder, use
installed ladder stops on the floor and position
ladder against installed ladder rest.
b. A 6 ft. or 8 ft. ladder can be used. A taller ladder
can be used in conjunction with the Ladder
Extension Module accessory. Sold separately.
8. Enter HEPACART® or DUSTBUGGY® and close the
door.
9. Use HEPACART® fan control knob to set airflow as
desired.
a. If flexible enclosure is billowing in making
work difficult. Reduce fan speed.
10. Once work is complete, reinstall ceiling tile and
clean the interior of the cart and workers clothing.
11. Leave the fan on and exit the containment area.
12. When ready to move to a new work area use the
switch on the exterior of the containment cart to
turn off the fan.
a. If using DUSTBUGGY® with an external negative
air machine. Turn off fan and remove ductwork.
13. Lower containment enclosure using quarter turn
counter clockwise lowering motion in reverse of
Step 4. Hand tighten the poles with only moderate
pressure.
14. Unplug electrical cord and retract into cord reel.
15. Unlock all (4) caster brakes. If necessary, engage the
two swivel locks and move to the next work area.

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Slide out Enclosure Instructions
1. Loosen the thumb screws located on the inside of
each end frame. (Figure 2)
2. In the center of the cart’s top-frame, gently pull the
slide mechanism to the desired extension.
3. Tighten the thumbscrews.
4. Refer to Classic or AutoLift sequence of operations
for normal use.
5. When finished and just prior to moving. Loosen
thumbscrews, slide the extension back and tighten
thumbscrews to lock into place.
Figure 2
All AutoLift Models; HEPACART® and
DUSTBUGGY®
1. Position HEPACART® or DUSTBUGGY® under the
ceiling tile to be removed.
2. Lock all (4) four brakes on the casters at each
corner.
3. Secure the operational area when required by
facility guidelines.
4. Plug HEPACART® or DUSTBUGGY® into a grounded
outlet. Pull enough cord from the reel to ensure
cord lays flat on the floor to avoid a tripping hazard.
a. If using the DUSTBUGGY® with an external
negative air machine connect ductwork between
the export adapter and negative air machine
inlet. Turn negative air machine on to desired
setting.
5. Raising (and subsequently lowering) the enclosure
via AutoLift push buttons located at the end of the
unit with the negative air machine.
a. Locate AutoLift push buttons and push the top-
half of the button to raise. Push buttons
simultaneously to raise at an even pace. Adjust
each side individually as required to
accommodate uneven floors and ceilings. Pay
close attention to top of unit during raising to
monitor contact with the ceiling. Stop raising
once foam has contacted to seal the
containment area.
6. Open the door on one end by pulling on the
installed latch.
7. Insert ladder into the HEPACART® or DUSTBUGGY®.
a. For a shelf ladder or extension ladder, use
installed ladder stops on the floor and position
ladder against installed ladder rest.
b. A 6 ft. or 8 ft. ladder can be used. A taller ladder
can be used in conjunction with the Ladder
Extension Module accessory. Sold separately.
8. Turn on HEPACART® negative air machine using the
switch located on one end
9. Enter HEPACART® or DUSTBUGGY® and close the
door.
10. Use HEPACART® fan control knob to set airflow as
desired.
11. Once work is complete, reinstall ceiling tile and
clean the interior of the cart and workers clothing.
12. Leave the fan on and exit the containment area.
13. When ready to move to a new work area use the
switch on the exterior of the containment cart to
turn off the fan.
a. If using DUSTBUGGY® with an external negative
air machine. Turn off fan and remove ductwork.
14. Lower containment enclosure by pushing the
bottom half of the two buttons simultaneously.
15. Unplug electrical cord and retract into cord reel.
16. Unlock all (4) caster brakes. If necessary, engage the
two swivel locks and move to the next work area.

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SPECIFICATIONS
All HEPACART® and DUSTBUGGY® models come standard with many safety and convenience features. While HEPACART® models
come with integral negative air machine. DUSTBUGGY® models are for use with an external stand-alone negative air machine.
•Fully boxed aluminum frame and caster assembly rated for 1500lbs.
•Premium door package with lock and key, polycarbonate window, and work order/permit holder.
•3-way electrical for control from inside or outside of the containment cart.
•LED lighting package including HALO light, shelf light, and in-use light.
•25’ retractable cord reel
•Every HEPACART negative air machine is factory tested for filter integrity and airflow and comes with a 1 year certification
for HEPA filter performance.
HEPACART® Models
Model
HC55U18.ETL,
HC55U1821A.ETL
HC74U18.ETL,
HC74U1821A.ETL
HC74UX18.ETL,
HC74UX1821A.ETL
Weight
350 lbs [159 kg]
375 lbs [170 kg]
400 lbs [181 kg]
Dimensions
(Enclosure down)
60 x 29 x 76.5 in.
[1520 x 733 x 1950 mm.]
80 x 29 x 76.5 in.
[2030 x 733 x 1950 mm.]
80 x 39 x 76.5 in.
[2030 x 990 x 1950 mm.]
Max Ceiling Height
Options1
10.5 ft. [3200 mm]
12 ft. [3650 mm]
Electrical (including
receptacle power)
120v 60hz 11.8 amps
Fan Power
160 watts
Power Cord
25 ft. [7600 mm]
Airflow
500 cfm [850 m3/hr]
Construction
Aluminum
Safety
Filtration unit conforms to UL Standard 507 and Certified to CSA STD 22.2 No. 113
*Specifications are subject to change without notice
1 AutoLift configuration is only available with a 10’-6” total enclosure height.
2 Standard enclosure height is 10.5 ft. 12 ft. option must be specified at time of purchase.
DUSTBUGGY® Models
Model
DB55U18, DB55U1821A
DB74U18, DB74U1821A
DB74UX18, DB74UX1821A
Weight
300 lbs [136 kg]
325 lbs [147.5 kg]
350 lbs [159 kg]
Dimensions (Enclosure
down)
60 x 29 x 76.5 in.
[1520 x 733 x 1950 mm.]
80 x 29 x 76.5 in.
[2030 x 733 x 1950 mm.]
80 x 39 x 76.5 in.
[2030 x 990 x 1950 mm.]
Max Ceiling Height
Options1
10 ft. [3000 mm]
12 ft. [3650 mm]
Electrical (including
receptacle power)
120v 60hz 10.4 amps
Fan Power2
N/A
Power Cord
25 ft. [7600 mm]
Airflow2
N/A
Construction
Aluminum
*Specifications are subject to change without notice
1 AutoLift configuration is only available with a 10’ total enclosure height.
2 DUSTBUGGY® models are not equipped with an integral negative air machine.
3 DUSTBUGGY® models are not equipped with an integral negative air machine.

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DIMMENSIONS
HEPACART Classic Model Pictured
HEPACART Classic Model Pictured
55U Series
74U Series
74UX Series
A
60 in
[1520mm]
80 in
[2030mm]
80 in
[2030mm]
B
29 in
[733mm]
29 in
[733mm]
39 in
[990mm]
C
76.5 in
[1950mm]
76.5 in
[1950mm]
76.5 in
[1950mm]
D3
10.5 ft. or 12 ft.
[3200 mm or 3650 mm]
E2
34 in
[860mm]
46 in [1160mm]
F2
26 in [660mm]
G2
46 in [1160mm]
H2
33 in
[840mm]
52 in [1320mm]
J1
15.75 in
[400mm]
21.75 in [550mm]
K1
45.75 in [1160mm]
L
13 in [330mm]
M1
20 in [508mm]
N1
31 in
[787mm]
42 in [1055mm]
P
91 in [2310mm]
1 Dimensions are free opening for optional wall access
2 Dimensions show size of optional windows for vision
panels.
3 12’ Only available on Classic Carts with optional
curtain accessory.

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See below for optional equipment and corresponding order codes for HEPACART® and DUSTBUGGY® mobile
containment carts.
HEPACART® OPTIONAL EQUIPMENT
Model
HC55U18 /
DB55U18
HC55U1821A /
DB55U1821A
HC74U18 /
DB74U18
HC74U1821A /
DB74U1821A
HC74UX18 /
DB74UX18
HC74UX1821A /
DB74UX1821A
Wall Access
TWA55U18
NOT AVAILABLE
TWA74U18
NOT AVAILABLE
TWA74UX18
NOT AVAILABLE
Ladder
Extension
Module
ALEM55
ALEM74
ALEM74X
360 Windows
VPHC55U
NOT AVAILABLE
VPHC74U
NOT AVAILABLE
VPHC74U
NOT AVAILABLE
Multiple Tile
Adapter
MTA55HALO
MTA74HALO
MTA74XHALO
Lockable Top
LTHC55U
NOT AVAILABLE
LTHC74U
NOT AVAILABLE
LTHC74UX
NOT AVAILABLE
Enclosure
Windows
CW55
CW74
CW74X
10’ Clear
Enclosure
PTC157x64-C18
PTC195x64-C18
PTC215x64-C18
12’ Clear
Enclosure
PTC157x88-C18
NOT AVAILABLE
PTC195x88-C18
NOT AVAILABLE
PTC215x88-C18
NOT AVAILABLE
10’ Translucent
Enclosure
PTC157x64-T18
PTC195x64-T18
PTC215x64-T18
12’ White
Enclosure
PTC157x88-
W18
NOT AVAILABLE
PTC195x88-
W18
NOT AVAILABLE
PTC215x88-
W18
NOT AVAILABLE
12’ Translucent
Enclosure
PTC157x88-T18
NOT AVAILABLE
PTC195x88-T18
NOT AVAILABLE
PTC195x88-T18
NOT AVAILABLE
Welding
Enclosure
PTC157x64-F18
PTC195x64-F18
PTC215x64-F18
Digital Pressure
Monitor
HCRPM
Top Dust Cover
DCHC55U
DCHC74U
DCHC74UX
Full Dust Cover
FDC-HC55U
FDC-HC74U
FDC-HC74UX

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Replacement Parts
Extension Pole (4 Pack)
EP4
Cord Reel Bracket
CRB
Cord Reel Replacement
CR
Swivel Caster
SC
Swivel Locks for Casters
SL-C
Caster Brake Pad Standard
CBP
Ceiling Frame Foam HC55U
CFFHC55U
Ceiling Frame Foam HC74U
CFFHC74U
Ceiling Frame Foam HC74UX
CFFHC74UX
Ceiling Frame Foam Dual Access
DAFF
Enclosure Bracket
EB
GFCI Replacement Kit
GFCIRK
HEPACART® Clean Mats w/
Frame
CM
Clean Mat Refill (60 clean mats)
No Frame
CMR
Door Lock and Key Set
KS
Negative Air Indicator
NAI
Pole Clamp Unibody Ver21
PCV2
Pole Retainer Socket
PRC
Rubber Pole Grips
RPG
Slide-Out Encloser
SOCO
Variable fan Speed Control
VFSC
Replacement Classic Halo Power
Supply
RHPS-C
Replacement AutoLift Halo
Power Supply
RHPS-A
NAM Latch and Clasp (4 Pack)
NAMFL
Replacement Enclosure Parts
Upper Enclosure Frame HC55U
UCF55
Upper Enclosure Frame HC74U
UCF74
Enclosure Clamping Material
HC55U
ECMHC55U
Enclosure Clamping Material
HC74U
ECMHC74U
Enclosure Clamping Material
HC74UX
ECMHC74UX
10ft White HC55U
PTC157x64-W18
10ft White HC74U
PTC195x64-W18
10ft White HC74UX
PTC215x64-W18
Refurbishment and Upgrade Kits
HC55U Standard Refurb. Kit
SRKHC55U
HC74U Standard Refurb. Kit
SRKHC74U
HC74UX Standard Refurb. Kit
SRKHC74UX
6” NAM DUSTBUGGY® Upgrade
N6
Replacement Filters
HEPACART® Pre-Filters
PF24241
HEPACART®6” HEPA Filter
HF24246
*Contact your HEPACART® sales representative with any questions regarding
replacement parts or upgrade kits.
1 Version 2 pole clamps come as standard equipment on all new HEPACARTs

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Safety, Operations, and Maintenance Manual
Model # HCNAM - HEPACART® NEGATIVE AIR MACHINE
HEPACART® models HC55U, HC74U, and HC74UX come equipped with an integral negative air machine. This advanced
HEPA filtration system is designed to trap contaminants such as dust, mold spores, and pollen.
SAFETY INSTRUCTIONS
WARNING! Electric shock hazard, rotating fan, and
breathing hazard. Unit must be grounded. To reduce
risk of electric shock do not expose to water or rain.
Unplug unit prior to service or cleaning.
•Do not exceed maximum receptacle load as
labeled.
•Do not use electrical outlet or power tools that
are wet or have been exposed to water.
•Inspect the power cord prior to use. If cord or
reel is damaged, do not use. Always grasp the
plug (not the cord) to unplug.
•Only plug the power cord into a matching
grounded outlet. Do Not remove third prong.
Do not use with adapter. Do not use extension
cord.
•Do not use power cord to maneuver.
•Do not step on the filter box.
This appliance is not intended for use by persons
(including children) with reduced physical, sensory
or mental capabilities, or lack of experience and
knowledge, unless they have been given supervision
or instructions concerning the use of the appliance
by a person responsible for their safety.
OPERATION
In its installed condition the HCNAM negative air
machine can be switched on-off from either inside or
outside of the HEPACART®. Fan speed control is only
available from the inside.
See Figure 1 and Figure 2 for component and control
locations while installed in HEPACART®.
Figure 3
Figure 4
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MAINTENANCE
The HEPA filter has been tested and certified for one
year. The HEPA filter provided with the HCNAM
negative air machine is a robust, long lasting filter that
has been tested and certified at the time of shipment.
The HEPA filter, however, is made from a paper media
that must be protected if there is chance it will be
exposed to moisture.
Before Each Use: Inspect for damage to electrical cord,
controls, and filter box. Clean up any debris left by the
previous job and check negative air machine for a clean
pre-filter.
Short term intervals: Inspect pre-filter for accumulated
dust and debris that could restrict airflow through the
filter. If filter is damaged or visibly dirt, change the pre-
filter.
Long term intervals: Whenever damage is suspected or
at a decrease in airflow, the HEPA filter should be re-
certified and replaced as required. Testing is
recommended annually, at a minimum.
When using in a healthcare application or for
remediation: To mitigate the risk of cross-
contamination, replace both of the filters and clean the
unit thoroughly. Use a damp wipe and vacuum as
required. Allow unit to dry before installing new filters.
CHANGING THE FILTERS
Prefilter: Change the pre-filter whenever it shows
accumulation of dust and debris. Always change the
pre-filter between jobs where dangerous contaminants
were present.
7. Unplug the power cord from line voltage power
source.
8. Remove the (2) two screws from the pre-filter cover
on the top of the negative air machine housing.
9. Remove the pre-filter cover.
10. Grasp the pre-filter and pull up to remove.
11. Insert new pre-filter from the top. (minimum MERV
8 pre-filter)
12. Reposition the cover and re-install (2) screws.
HEPA Filter: Re-certify HEPA filter on an annual basis
and replace if shows signs of damage or reduced
airflow. Always change the HEPA filter between jobs
where potentially dangerous contaminates are present.
11. Unplug the power cord from line voltage power
source.
12. Remove the (2) two screws from the pre-filter cover
on the top of the negative air machine housing and
remove the pre-filter cover.
13. Release (4) four clasps (2 on each side) of the fan
housing.
14. Remove fan housing.
15. Remove the dirty HEPA filter from the filter flange.
16. Carefully install clean HEPA filter. Note direction of
airflow and ensure filter media has upstream and
downstream gaskets.
17. Replace fan housing.
18. Reattach the (4) four clasps (2 on each side) to
secure housing to cart.
19. Reposition the pre-filter cover and re-install (2)
screws.
20. Test for proper operation and have the unit re-
certified.
a. Contact HEPACART® customer service
representative for approved certifiers in
your area.
TROUBLESHOOTING
FAULT
CAUSE
SOLUTION
Unit does not
operate
GFCI Tripped (red
light on receptacle)
Firmly press
“RESET” button on
GFCI receptacle.
No Power (no light
on GFCI receptacle)
Make sure unit is
plugged in. Check
for power at outlet
Press “12” amp
breaker to reset
Low Airflow
Dirty Pre-Filter
Change Pre-Filter
Dirty HEPA Filter
Change HEPA Filter
1. *For problems not listed in this table reach out to your HEPACART®
sales representative for assistance.