Envirco Hospi-Gard User manual

www.envirco.com
Operation Manual
HOSPI-GARD®
IsoClean®
And
IsoClean® UV

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
Operation Manual
i
CAUTION AND WARNINGS
READ AND SAVE THESE INSTRUCTIONS
CAUTION: To reduce the risk of fire, electrical shock or injury to persons, observe the
following:
A. Installation work and electrical wiring must be done by a qualified person(s) in accordance with
all applicable codes and standards, including fire-rated construction.
B. When cutting or drilling into a wall or ceiling, do not damage electrical wiring or other hidden
utilities.
C. Service to this equipment should be performed by authorized technicians trained and
experienced in performance evaluation and maintenance of clean air equipment. However,
certain procedures are outlined in this manual that can be performed by the owner.
D. Before servicing the unit, switch power off at service panel and lock service panel to prevent
power from being switched on accidentally, and follow proper procedures as necessary.
E. Use this unit only in the manner intended by the manufacturer. If you have questions, please
contact:
ENVIRCO CORPORATION FEDDERS INTERNATIONAL
Envirco Office Headquarters
5601 Balloon Fiesta Parkway N.E. No. 268 Xi Zang Road (M)
Albuquerque, New Mexico 87113 Haungpu District
U.S.A. Shanghai 200001
Tel : [phone] PRC
Fax : [phone] Tel : [phone]
Email: [e-mail] Fax : [phone]
TRION LTD. FEDDERS INTERNATIONAL, INC.
The Cavendish Centre DP Computers Building
Winnall Close 128 Joo Seng Road #05-01
Winchester, Hampshire, SO23 0LB, UK Singapore 368356
Tel : [phone] Tel : [phone]
Fax : [phone] Fax : [phone]
Email: [e-mail]
Hospi-Gardis a registered trademark of ENVIRCO Corporation
IsoClean CM® is a trademark of ENVIRCO Corporation
US Patents 4,560,395 and 5,470,363. Other patents issued and pending in foreign countries

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
Operation Manual
ii
TABLE OF CONTENTS
TITLE PAGE
1.0. Introduction ............................................................................................................................... 1
1.1. Description ...........................................................................................................................................1
1.2. Features...............................................................................................................................................1
1.3. Applications..........................................................................................................................................2
2.0. Installation ................................................................................................................................. 3
2.1. Unpacking Instructions.........................................................................................................................3
2.2. Assembly .............................................................................................................................................3
2.3. Initial Start-Up ..............................................................................................3
3.0. Operating Procedures ............................................................................................................... 4
3.1. Initial Set-Up ........................................................................................................................................4
3.2. Speed Adjustment................................................................................................................................4
3.3. Airflow Indicator ...................................................................................................................................4
3.4. Recirculation Mode ..............................................................................................................................5
3.5. Partial Exhaust/Recirculation Mode (Negative Pressure)....................................................................6
3.6. Total Exhaust Mode (Negative Pressure)............................................................................................6
3.7. Negative Pressure ...............................................................................................................................7
4.0. Maintenance and Service .......................................................................................................... 9
4.1. Parts Identification ...............................................................................................................................9
4.2. Cleaning the Unit ...............................................................................................................................11
4.3. Prefilter Replacement ........................................................................................................................11
4.4. Removal of Front and Rear Panels ...................................................................................................12
4.5. HEPA Filter Replacement..................................................................................................................12
4.6. Power Cord ........................................................................................................................................13
4.7. On/Off Switch.....................................................................................................................................13
4.8. Speed Control Switch ........................................................................................................................13
4.9. Air Pressure Switch............................................................................................................................13
4.10. Capacitor............................................................................................................................................14
4.11. Pilot Light ...........................................................................................................................................14
4.12. Motor..................................................................................................................................................14
4.13. Motor/Blower Lubrication ...................................................................................................................14
4.14. Relocating a Contaminated Unit ........................................................................................................14
4.15. Unit Decontamination.........................................................................................................................15
4.16. UV Light Tube Replacement..............................................................................................................17
5.0. Troubleshooting ...................................................................................................................... 18
5.1. Inoperative Air Flow ...........................................................................................................................18
5.2. Low Air Flow ......................................................................................................................................18
5.3. High Air Flow......................................................................................................................................18
5.4. Excessive Contamination ..................................................................................................................18

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
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6.0. Wiring Diagram ........................................................................................................................ 19
6.1. Hospi-Gard®IsoCleanWiring Diagram............................................................................................19
6.2. Hospi-Gard®IsoCleanUV Wiring Diagram......................................................................................20
7.0. Specifications .......................................................................................................................... 21
7.1. IsoClean®...........................................................................................................................................21
7.2. IsoClean®UV .....................................................................................................................................21
8.0. Replacement Parts .................................................................................................................. 22
9.0. Airflow Measurement and Testing.......................................................................................... 24
10.0. Appendix .................................................................................................................................. 25
11.0. Limited Warranty ..................................................................................................................... 26

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
Operation Manual
Page 1
INTRODUCTION
1.0. Introduction
1.1. Description
The Hospi-GardIsoClean®and IsoClean®UV are portable, self-contained high-
efficiency particulate air (HEPA) filtration system specifically designed to provide a high-
velocity airflow pattern from the top face grille that creates a sweeping action to remove
airborne particulate. In addition to recirculating clean air, it can simultaneously exhaust
air out of the room to create negative pressure. An optional 8-inch exhaust collar is
available to convert the IsoClean®to a complete exhausting system.
Air enters the module through the intake grille located on the lower section of the unit.
The air is evenly drawn by the blower first through a prefilter and then through a HEPA
filter. The HEPA filter is 99.99% efficient at removing particles 0.3 microns and larger.
The air moves at a volume of 550 cubic feet per minute (CFM) on low, 700 CFM on
medium and up to 800 CFM on high to carry away airborne particulate generated by
activities within the room.
The IsoClean®UV offers the added benefits of ultraviolet irradiation of the particulate
caught on the HEPA filter surface and in the air prior to recirculation back into the room.
1.2. Features
•The Hospi-GardIsoClean®can be used as a total recirculating air system, as a total
air exhaust system (using the optional 8-in. exhaust collar) or as a split system with
partial air recirculation and partial air exhaust.
•The Hospi-GardIsoClean®can easily and economically convert a standard room
into a negative pressure, patient isolation room.
•Provides 27 air changes per hour in a typical patient room of 18 feet x 12 feet x 8 feet.
•The three-speed adjustable airflow control allows effective use in a variety of room
sizes.
•High discharge air velocity with a high-to-low airflow pattern assures adequate “reach”
and air circulation, preventing “short circuiting.”
•Quiet operation. 52 dBA at low, 56 at medium and 60 at high speed measured 30 in.
from face of unit.
•HEPA filter and prefilter are easy to replace.

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1.3. Applications
Hospital
•Convert Patient Rooms to Negative Pressure Isolation Rooms
•Waiting Rooms
•Bronchoscopy Rooms
•Emergency Rooms
•Intensive Care Units
•Sputum Induction Booths and Rooms
•Aerosol Pentamidine Booths and Rooms
•Renal Dialysis Treatment Rooms
•Hospital Reconstruction Areas
Other
•Clinics
•Physician Offices
•Correctional Facilities
•Nursing Homes
•Homeless Shelters
•Addiction Recovery Center

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
Operation Manual
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INSTALLATION
2.0. Installation
2.1. Unpacking Instructions
2.1.1. The Hospi-GardIsoClean®is shipped in an open-framed crate. The module
should be inspected for exterior shipping damage immediately upon arrival. If
any damage is observed, a claims report should be completed and promptly filed
with the responsible carrier.
2.1.2. Uncrate and remove all packing material. Examine the unit for internal damage.
If damage is discovered inside the crating, file a claim with the responsible carrier
immediately. The shipping components list and actual material received should
be compared and any shortages reported to Envirco immediately.
2.2. Assembly
2.2.1. The Hospi-GardIsoClean®is shipped completely assembled from the factory
and requires no assembly. Every unit is tested prior to shipment to verify airflow,
noise level and that the unit is leak-free.
2.2.2. Place the unit in its final operating position (see Figure 1 in section 3.4. for
recommended positioning).
2.2.3. Lock the wheel locks on the casters to keep the unit from accidental re-
positioning.
2.3. Initial Start-Up
NOTE: The CDC requires that quantitative leakage and filter performance tests be
performed at the initial installation and every time the filter is changed or
moved. Tests should be repeated every six months. The factory tests should
not be substituted for the initial test.

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
Operation Manual
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OPERATING PROCEDURES
3.0. Operating Procedures
3.1. Initial Set-Up
3.1.1. Connect the power cord to a standard 115-Volt, Single Phase, 60 Hertz,
grounded power source. Assure that the circuit is sized to provide sufficient
amperage as noted on the Hospi-GardIsoClean®data plate.
3.1.2. Locate the “ON/OFF” switch on the right side of the unit. The switch is a
maintain contact rocker type.
3.1.3. Turn the Hospi-GardIsoClean®unit on by pressing downward on the raised
portion of the rocker switch. A slight whirring sound will be heard as the motor
starts. Within 5 to 10 seconds, the module will start to provide clean air into the
environment.
3.2. Speed Adjustment
NOTE: The Hospi-GardIsoCleanunit is set on low at the factory.
3.2.1. To change speeds, remove the exhaust grille by pulling down and lifting out.
3.2.2. Turn the 3-speed switch to the desired setting.
3.2.3. Replace the exhaust grille.
3.3. Airflow Indicator
3.3.1. Locate the airflow indicator on the right side of the unit above the “ON/OFF”
switch. On high speed, the light will turn on when there is sufficient pressure,
indicating the need for a filter change. The airflow indicator should not be used as
the only guide for when a filter change is necessary. The unit should be checked
on a periodic basis to insure recommended room air changes per hour are being
met.
3.3.2. The air velocity generated by the unit may be checked using an airflow
measurement device. The volume of air entering the lower intake grille should
be approximately 550 CFM on low, 700 CFM on medium and 800 CFM on high
with a new filter. See Section 9 for the recommended airflow measurement
procedure.

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
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3.4. Recirculation Mode
3.4.1. The Hospi-GardIsoClean®unit is set at the factory on the 100% air recirculation
mode.
3.4.2. The room air change rate of the unit will depend on both the Hospi-Gard
IsoClean®speed setting and the size of the room. See Table 1 in the Appendix
for representative room air changes per hour (ACH).
3.4.3. For maximum recirculation efficiency, the unit should be placed between the
entry door and the patient’s bed or the activity area (see Figure 1 below).
However, the unit will function effectively at other locations within the room.
Figure 1: Recommended Hospi-Gard

 IsoClean® Positioning within a Patient Room

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3.5. Partial Exhaust/Recirculation Mode (Negative Pressure)
NOTE: The IsoClean®and IsoClean®UV units come with a removable Exhaust Cover
Plate and a removable 6-inch Duct Collar for attachment to exhaust ducting
(not included) to create a negative pressure room. If the Exhaust Cover Plate
is not removed, both the IsoClean®and IsoClean®UV units will operate in the
100% recirculation mode.
3.5.1. Remove the Exhaust Cover Plate located on top of the IsoClean®unit by taking
off the four (4) screws and plastic caps used to secure the cover to the IsoClean®
exhaust port.
3.5.2. Remove the 6-inch duct collar underneath the top cover and flip the collar over.
3.5.3. Attach exhaust ducting (not included) onto the collar and fasten tightly with a
round hose clamp (not included).
3.5.4. Mount the duct collar with ducting onto the IsoClean®exhaust port using the four
(4) screws that originally held the cover plate.
NOTE: Keep the top plate and plastic washers for re-assembly when needed.
3.5.5. The HEPA filtered exhaust air can now be vented to the outside or returned to
the main HVAC system1. If the unit is ducted to an exhaust duct rather than
directly to the outside, it must be verified that the exhaust duct is capable of
handling the exhaust air expelled by the unit.
3.5.6. The IsoClean®is designed to exhaust 100-300 CFM at the 6-inch exhaust port. It
is recommended that the unit be set on the high-speed setting when operating in
this mode to achieve maximum exhaust and negative pressure. At this setting,
the IsoClean®will exhaust approximately 300 CFM and recirculate 500 CFM.
3.6. Total Exhaust Mode (Negative Pressure)
NOTE: The cover plate must be securely attached to the top of the IsoClean®for the
unit to run in the 100% exhaust mode.
3.6.1. An optional 8-inch Exhaust Collar with Flange (Part No. 11055) is available to
convert the IsoClean®unit to the 100% exhaust mode.
3.6.1.1. Remove the front exhaust grille by pulling down and lifting out.
3.6.1.2. Place the optional 8-inch exhaust collar over the opening where the
grille was removed and attach with the screws included with the 8-inch
collar.
3.6.1.3. Attach flexible exhaust duct (not included) over the 8-inch collar and
fasten tightly with a round hose clamp (not included).
__________________________________________________________________________________
1CDC recommends that air from negative pressure rooms be exhausted to the outside in accordance with federal, state and local
regulations. The air should not be recirculated into the general ventilation. In certain cases in existing facilities, recirculation of air into the
general ventilation system is unavoidable and, in such cases, CDC guidelines state that HEPA filters should be installed in the exhaust
duct leading from the room to the general ventilation system.

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
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3.6.1.4. The HEPA filtered exhaust air can now be vented to the outside or
returned to the main HVAC system2. If the unit is ducted to an exhaust
duct rather than directly to the outside, it must be verified that the
exhaust duct is capable of handling the exhaust air expelled by the unit.
3.6.2. An optional 8-inch Duct Collar (Part No. 23877-002P) and Front Exhaust Cover
(Part No. 38236-001P) must be purchased separately to convert the IsoClean®
UV unit to the 100% exhaust mode.
3.6.2.1. Remove the Exhaust Cover Plate for the IsoClean®UV located on top
of the IsoClean®UV by taking off the four (4) screws and plastic caps
used to secure the cover to the IsoClean®UV exhaust port.
3.6.2.2. Replace the Exhaust Cover Plate with the optional 8-inch Duct Collar
and secure it to the IsoClean®UV using the four (4) screws that
originally held the Cover Plate.
3.6.2.3. Remove the Front Exhaust Grille and replace with the Front Exhaust
Cover.
3.6.2.4. Attach flexible exhaust duct (not included) over the 8-inch collar and
fasten tightly with a round hose clamp (not included).
3.6.2.5. The HEPA filtered exhaust air can now be vented to the outside or
returned to the main HVAC system3. If the unit is ducted to an exhaust
duct rather than directly to the outside, it must be verified that the
exhaust duct is capable of handling the exhaust air expelled by the unit.
3.7. Negative Pressure
NOTE: CDC Guidelines recommend that rooms used for negative pressure isolation
should be single patient rooms with negative pressure relative to the corridor or
other areas connected to the room. The minimum pressure difference
necessary to achieve and maintain negative pressure that will result in airflow
into the room is 0.01 inch W.G. (a higher pressure is preferred). To achieve
this, the exhaust flow should be 10% or 50 CFM greater than the supply
(whichever is greater).
3.7.1. Achieving Negative Pressure
3.7.1.1. The IsoClean®unit is designed to exhaust 100-300 CFM when the
6-inch exhaust collar is used. It is recommended that the unit be set on
the high-speed setting when operating in this mode to achieve
maximum exhaust and negative pressure. At this setting, the IsoClean®
will exhaust approximately 300 CFM and recirculate 500 CFM.
__________________________________________________________________________________
2CDC recommends that air from negative pressure rooms be exhausted to the outside in accordance with federal, state and local
regulations. The air should not be recirculated into the general ventilation. In certain cases in existing facilities, recirculation of air into the
general ventilation system is unavoidable and, in such cases, CDC guidelines state that HEPA filters should be installed in the exhaust
duct leading from the room to the general ventilation system.
3CDC recommends that air from negative pressure rooms be exhausted to the outside in accordance with federal, state and local
regulations. The air should not be recirculated into the general ventilation. In certain cases in existing facilities, recirculation of air into the
general ventilation system is unavoidable and, in such cases, CDC guidelines state that HEPA filters should be installed in the exhaust
duct leading from the room to the general ventilation system.

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
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3.7.1.2. If an exhaust volume greater than 300 CFM is required to create a
negative pressure room, the optional 8-inch 100% exhaust collar (Part
No. 11055) should be used as described in Section 3.6.
3.7.1.3. The attachment of ductwork to the exhaust port decreases the air
volume exhausted through the port. The magnitude of the decrease
varies depending on the length and type of duct as well as its
configuration. For example, for a 10-foot run of standard flexible duct
containing two 90-degree bends, the exhaust reduction will be
approximately 100 CFM.
NOTE: It is the responsibility of the purchaser and not Envirco Corporation to
ensure the room in which the unit is used is in compliance with CDC
Guidelines4for a negative pressure isolation room and monitored to
ensure its continuing performance.
3.7.2. Difficulty Achieving Negative Pressure
The equipment may not be able to achieve or maintain negative pressure in
conformance with the CDC Guidelines4due to building ventilation of rooms or air
leakage. The room should be inspected for air leakage through doors, windows,
plumbing and wall penetrations. Appropriate corrective action should be taken to
seal the leaks.
__________________________________________________________________________________
4CDC. Guidelines for Preventing the Transmission of Tuberculosis in Health-Care Facilities, 1994. MMWR, October 28, 1994; 43
(No. RR-13.)

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
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MAINTENANCE AND SERVICE
4.0. Maintenance and Service
4.1. Parts Identification
4.1.1. Hospi-Gard

 IsoClean®
Figure 2: Hospi-Gard

 IsoClean® Parts Location

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
Operation Manual
Page 10
4.1.2. Hospi-Gard

 IsoClean® UV
Figure 3: Hospi-Gard

 IsoClean® UV Parts Location

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
Operation Manual
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CAUTION: Proper protective equipment and measures must be used at all times
during unit cleaning and maintenance. Check with your Safety Office to
assure the cleaning solutions, protective equipment (disposable hospital
gown, HEPA respirator, protective gloves) and protocols followed comply
with your facility’s and CDC guidelines.
CAUTION: Disconnect the unit from the electrical power source before attempting
service. Do not work inside the IsoClean® UV with the UV light on. Proper
replacement of UV containment baffles, after maintenance, is mandatory to
maintain safe short-term and long-term UV exposure levels.
4.2. Cleaning the Unit
4.2.1. Periodic cleaning of the unit may be done with a mild disinfecting soap and water
solution. A 1% or 1/100 dilution of bleach is an optional disinfectant5.
4.2.2. Cleaning must be performed with the unit running. Wipe the exterior of the unit
with a damp sponge or cloth, paying particular attention to the prefilter intake
grille.
4.3. Prefilter Replacement
4.3.1. The prefilter should be replaced every 60 to 90 days. Regularly replacing the
prefilter will maximize the life of the HEPA filter.
The IsoClean®UV comes standard with an anti-microbial pleated prefilter. It is
recommended that a pleated prefilter is used to insure that safe long-term
recommended exposure levels to UV are maintained.
4.3.2. Wipe the unit as described in Section 4.2.
4.3.3. Spray a mist of phenolic disinfectant such as “Amplyl” or “Lysol” into the air
intake grille.
4.3.4. Remove the two (2) thumb nuts from the face of the intake grille and pull the
grille out.
4.3.5. Insert gloved hand into a red plastic, medical waste disposal bag. Grasp the top
portion of the prefilter with bagged hand and gently pull outward. The airflow of
the unit will offer a resistance to pulling the prefilter out.
4.3.6. Turn the bag inside out over the prefilter then seal the bag for containment.
4.3.7. Install a new prefilter and close the grille up in the reverse order of removal.
__________________________________________________________________________________
5Rutala WA, APIC guideline for selection and use of disinfectants, Am J Infect Control 1996 Aug ; 24(4): 313-42.

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
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CAUTION: Appropriate decontamination procedures (see Section 4.15 must be
followed prior to removal of the access panels to replace the HEPA filter or
other parts. Contact your Safety Office to assure it conforms to your
facility’s protocol.
4.4. Removal of Front and Rear Panels
4.4.1. Remove the front access panel by taking off the screw covers and removing the
four (4) screws. The front panel may now be lifted off.
4.4.2. Remove the 18 screws securing the rear access panel. The rear panel may now
be lifted off.
4.5. HEPA Filter Replacement
The CDC recommends that in any application, HEPA filters should be maintained
meticulously and should be carefully installed by adequately trained personnel wearing
an appropriate respirator. A regular maintenance program should include procedures for
installation, removal and disposal of filter elements and a program to monitor the HEPA
filter for possible leakage and for filter loading.
4.5.1. The expected HEPA filter life should range from 18 months to two (2) years
depending on the environment and prefilter maintenance schedule. The filter
indicator light will give a warning of filter loading by flickering on high speed.
When the light stays lit on high speed, the HEPA filter should be changed.
4.5.2. Remove the prefilter as described in Section 4.3.
4.5.3. Remove the front access panel as described in Section 4.4. Lift the panel out
and set it aside.
4.5.4. Removal of the UV Light Assembly for the IsoClean® UV
4.5.4.1. Remove the five (5) screws on the left hand UV containment baffle and
the five (5) screws on the right hand containment baffle and remove the
baffle assemblies.
4.5.4.2. Disconnect the three-pin connector located near the UV lamp ballast
and remove the wires from the wire routing clamp.
4.5.4.3. Remove the four (4) screws, washers and nuts holding the UV lamp
assembly in place (the mounting channel may be removed or left in
place). Access through the exhaust grille is necessary to remove the
mounting channel. Remove the exhaust grille by pushing down and
lifting out. Carefully remove the UV lamp assembly taking care not to
touch the glass tube.
NOTE: Clean the UV light tube as necessary, using a cloth dampened with an
10% alcohol (or ammonia) and water solution, to avoid lamp
degradation due to oil and dust residues.

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4.5.5. Remove the six (6) bolts and clamps holding the HEPA filter. Slip a plastic
biohazard bag over the filter from the top down. Tilt the top of the filter downward
and wrap the bag over the bottom of the HEPA filter. Seal the bag to for
containment.
NOTE: It may be necessary to use two (2) biohazard bags to fully contain the
filter.
4.5.6. Remove the new HEPA filter from its container and install it in the reverse order
of removal. Care must be taken when handling the HEPA filter. Do not bump or
squeeze the filter as this may damage the filter and render it non-effective.
4.6. Power Cord
4.6.1. With the back panel removed, unplug the white connector on the power cord.
4.6.2. Remove nut on ground wire.
4.6.3. Remove strain relief on the side of the unit.
4.6.4. Remove the old cord and replace with the new one, following the steps above in
reverse order.
4.7. On/Off Switch
4.7.1. With the back panel removed, unplug the white connector on the switch and
squeeze the retainer strips on switch bezel.
4.7.2. Remove retaining nut that holds the switch to the baffle panel.
4.7.3. Unplug all connecting wires and replace the new switch, following the steps
above in reverse order.
4.8. Speed Control Switch
4.8.1. Remove the exhaust grille by pushing down and lifting out.
4.8.2. Remove the retaining nut that holds the switch to the baffle panel.
4.7.3. Unplug all connecting wires and replace with the new switch, following the steps
above in reverse order.
4.9. Air Pressure Switch
4.9.1. With the back panel removed, disconnect the two (2) air supply tubes and two (2)
electric terminals.
4.9.2. Remove the two (2) sheet metal screws and replace with the new switch, making
sure to reconnect everything correctly.

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4.10. Capacitor
4.10.1. With the back panel removed, remove one screw from capacitor strap.
4.10.2. Slide capacitor out.
4.10.3. Remove the rubber boot and disconnect wires.
4.10.4. Replace with the new capacitor, following the steps above in reverse order.
4.11. Pilot Light
4.11.1 With the back panel removed, disconnect the 3-pin connector and push out
pilot light from the inside of the unit.
4.11.2 Replace the pilot light, following the step above in reverse order.
4.12. Motor
4.12.1. With the back panel removed, disconnect all wire connections between the
motor and other components.
4.12.2. Loosen the Allen Head Set screws on the blower wheel hub and remove the
wheel.
4.12.3. Loosen the screw on the motor belly band until the motor can slide out.
4.12.4. Replace with the new motor, following the steps above in reverse order,
ensuring there is an ⅛-inch to ¼-inch gap between the blower wheel and the
inlet ring.
CAUTION: When reinstalling the motor ensure that it does not touch or puncture the
HEPA filter.
4.13. Motor/Blower Lubrication
The IsoCleanunit is equipped with permanently sealed bearings and requires no
lubrication.
4.14. Relocating a Contaminated Unit
NOTE: Use proper protocol, gowning and protective measures.
4.14.1. If an existing unit is to be placed into storage for an extended period of time,
remove and replace the prefilter as described in Section 4.3.
4.14.2. Turn the unit off and disconnect from power source.
4.14.3. Clean the exterior surfaces of the unit as described in Section 4.2.
4.14.4. Unlock caster wheel locks and move unit to its new location.

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4.15. Unit Decontamination
NOTE: Use proper protocol, gowning and protective measures during unit
decontamination.
Should decontamination of the unit be required, the following is an adaptation by
Annex G. of the Recommended Microbiological Decontamination Procedure from NSF
49, May 1992. Confirm with appropriate Biosafety and Industrial Safety Professionals
that the procedures meet your facility’s guidelines.
4.15.1. Paraformaldehyde Decontamination
4.15.1.1. Relocate the unit as described in Section 4.14 to a controlled
access, non-public area with a non-porous floor, good ventilation
and a dedicated exhaust directly outside the building. A new
prefilter is not required. Attach and seal a flexible hose to the
dedicated exhaust. Place the other end of the exhaust hose near
the unit.
4.15.1.2. Calculate the total volume of the unit by multiplying the height, width
and depth. The total IsoCleanvolume is 13 cubic feet (61 in. x 24
in. x 15.5 in.).
4.15.1.3. Multiply the total volume of the unit by 0.3g/ft3to determine the gram
weight of Paraformaldehyde required. Decontamination of the
IsoCleanrequires 3.9 grams (12 ft3x 0.3g/ ft3) of
Paraformaldehyde.
4.15.1.4. Remove the intake grille and wipe it down with an appropriate
surface decontaminant.
4.15.1.5. Place an unplugged heating device, such as a commercially
available electric frying pan with the thermostat set at 232.2º to
246.1º C (450º to 475º F) inside the unit through the removed
prefilter access panel. Spread the Paraformaldehyde evenly over
the heating surface of the electric frying pan.
CAUTION: The auto-ignition temperature of Paraformaldehyde is 300o C
(572o F). Place a hot plate, beaker of water, and temperature
and humidity indicators in the unit next to the pan that will
contain the Paraformaldehyde.
4.15.1.6. Enclose all sides of the unit with heavy gauge plastic film and tape
in place while leaving the film that will close the space formerly
occupied by the intake grille free. The power cord should be coiled
and taped to the unit and sealed under the plastic film. Seal the film
to the floor on which the unit stands.
4.15.1.7. Determine the temperature and humidity inside the unit.

HOSPI-GARD® ISOCLEAN® and ISOCLEAN® UV
Operation Manual
Page 16
4.15.1.8. The temperature should be 21.1 o C (70 o F) or higher with a humidity
level between 60% to 85%. Use the hot plate to heat the beaker of
water until the desired temperature and humidity are achieved.
Disconnect the hot plate.
4.15.1.9. Seal the film over the remaining opening of the intake grille space.
Carefully seal around the power cord extending from the electric
frying pan so that formaldehyde gas will not leak out.
4.15.1.10. Plug the cord of the electric frying pan into an outlet.
4.15.1.11. After the Paraformaldehyde has depolymerized, disconnect the
frying pan from the electrical outlet.
4.15.1.12. Allow the unit to stand for a minimum of two hours or overnight.
4.15.1.13. Attach the flexible hose to the unit and allow it to draw from inside
the unit.
4.15.1.14. After 15 minutes of visible exhaust activity, small openings may be
made in the film over the unit’s air supply grille to improve
ventilation.
4.15.1.15. Allow the unit to ventilate overnight.
4.15.1.16. Remove the unit from exhaust ventilation when the formaldehyde
gas has been exhausted.
CAUTION: During unit decontamination, respiratory protection for
service personnel is recommended. Only National Institute
for Occupational Safety and Health (NIOSH) approved
respirators should be used.
4.15.1.17. Remove the HEPA filter as described in Section 4.5. The filter can
now be disposed of as general waste.
4.15.2. Phenolic Decontamination
In facilities where Paraformaldehyde gas decontamination is prohibited or not
feasible, the unit can be disinfected by the following procedure.
4.14.2.1. Remove the prefilter as described in Section 4.3.
4.14.2.2. After the intake grille and prefilter are removed, turn the unit on, and
with the unit running, spray a mist of phenolic disinfectant such as
Amphyl or Lysol into the air intake opening. Approximately two (2)
to five (5) ounces is adequate.
4.14.2.3. Remove the HEPA filter as described in the Section 4.5. Since the
filter has not been decontaminated by the formaldehyde procedure,
it must be placed in a red medical waste bag and disposed of
properly.