laminar flow horizontal flow bench (lf) operation

laminar flow horizontal flow bench (lf) operation
LAMINAR FLOW HORIZONTAL FLOW BENCH (LF)
OPERATION & MAINTENANCE MANUAL
ENVIRCO Technical Support: 800-884-0002
LF HORIZONTAL FLOW BENCH
Operations Manual
Installation & Service Manual
Table of Contents
WARNING............................................................................................................................ 3
INTRODUCTION.................................................................................................................. 3
FEATURES........................................................................................................................... 4
APPLICATIONS.................................................................................................................... 4
ASSEMBLY.......................................................................................................................... 5
SERVICE...............................................................................................................................
Fluorescent Lamp Replacement..................................................................................... 5
Fluorescent Fixture Ballast Replacement....................................................................... 5
Prefilter Replacement..................................................................................................... 6
HEPA Filter Replacement................................................................................................ 6
Blower Replacement....................................................................................................... 6
Rate of Flow Adjustment................................................................................................. 6
WIRING DIAGRAMS.............................................................................................................
LF Console...................................................................................................................... 7
LF Table.......................................................................................................................... 7
ENGINEERING DATA.......................................................................................................... 8
PARTS LIST..........................................................................................................................
Model LF-430.................................................................................................................. 9
Model LF-530.................................................................................................................. 9
Model LF-630................................................................................................................. 10
Model LF-830................................................................................................................. 10
PARTS LOCATION.............................................................................................................. 11
LIMITED WARRANTY......................................................................................................... 11
2
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LF HORIZONTAL FLOW BENCH
Operations Manual
Installation & Service Manual
■
WARNING
To reduce the risk of fire, electrical shock, or injury to persons, observe the following:
•
•
•
•
Installation work and electrical wiring must be done by qualified person(s) in accordance with all applicable codes
and standards, including fire-rated construction.
When cutting or drilling into wall or ceiling, do not damage electrical wiring and other hidden utilities.
If this unit is to be installed over a tub or shower, it must be marked as appropriate for the application.
Use this unit only in the manner intended by the manufacturer. If you have any questions, please contact:
ENVIRCO CORPORATION
101 McNeill Road
Sanford, NC 27330
Tel: 919.775.2201
Fax: 800.458.2379
Toll Free: 800.884.0002
Email: customerservice@envirco.com
•
■
Before servicing or cleaning the unit, switch power off at service panel and lock out service panel to prevent power
from being switched on accidentally.
INTRODUCTION
The LF Horizontal Laminar Flow Clean Bench is a completely self-contained, multipurpose, vibration-free clean bench
that supplies a laminar flow pattern of HEPA filtered air. The clean bench provides a Class 100 (M 3.5) environment.
The unique design concept of the LF Horizontal Laminar Flow Clean Bench consists of separate plenum and table
modules that virtually isolates all vibration transmission from the filter/blower console to the work surface.
Air enters the LF Horizontal Laminar Flow Clean Bench through a prefilter which removes most of the large particles.
The air is then evenly distributed across the High Efficiency Particulate Air (HEPA) filter by blower. The HEPA filter
removes 99.99% of all particles 0.3 micros and larger in size and imparts a unidirectional or laminar flow pattern to
the air. The air moves through the work area at a uniform velocity of 90 feet per minute (+/-20%), carrying away all
airborne contamination generated by activities within the work area. All samples or equipment within the work area are
continually bathed in the ultra-clean air.
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LF HORIZONTAL FLOW BENCH
Operations Manual
Installation & Service Manual
■
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FEATURES
Fulfills requirements of current Federal Standard 209.
Washable polyurethane foam prefilter, easily removable for maintenance.
“HEPA” final filter, 99.99% efficient on particulates 0.3 microns and larger. Designed to use a permanent nonhardening flexible compound sealant in conjunction with a neoprene gasket. Filters are easily accessible through
the front of the cabinet.
Quiet operation: 65 +/- 3 dbA operator’s station with a 48 dbA ambient.
Virtually isolates all vibration transmission from the filter/blower console to the work surface.
Dynamically balanced direct drive blower mounted on vibration dampened, shock absorbent rubber mounts with
additional resilient cushion-faced mating surfaces.
Continuous duty motor(s) with sealed-for-life bearings and built-in thermal overload protection.
Solid state speed control provides for output of blower.
Three prong grounded electrical plug for standard 115-volt receptacle.
Blower and filter plenum is constructed of all welded construction, painted with a non-particulating white polyurethane
paint. All seams are sealed.
All units are factory tested for leaks, sound level, vibration, airflow, light level, and mechanical function.
The “LF” is a horizontal flow workstation, designed for product protection only.
The work surface is constructed of pressed wood laminated on all sides with a non-particulating, non-glare white
Formica. (Stainless Steel is optional.)
Adjustable leveling feet are located on the workbench.
A duplex receptacle is provided on the face of the right hand work surface leg. The blower/motor and light switch
are located on front of light canopy for easy access.
APPLICATIONS
The high-performance, two-piece LF Clean Bench has successfully demonstrated its versatility in a wide variety of
applications and industries.
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4
Optical Assembly
Microscopy Analysis
Critical Sample Preparation
Pharmaceutical Preparation
Tissue Culture
Microelectronic Fabrication and Assembly
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LF HORIZONTAL FLOW BENCH
Operations Manual
Installation & Service Manual
■
ASSEMBLY
1. The “LF” comes completely assembled in a single open framed crate. The unit is comprised of two components,
the filter/blower console and the workstation.
2. Carefully remove top and four sides of the crate.
3. Remove the protective plastic covering from the unit.
4. Cut and carefully remove binding straps.
5. Remove wooden blocks holding unit in place.
6. Remove unit from shipping skid.
7. Remove prismatic light diffuser and light tubes (placed in a separate box) and insert on underside of light canopy
after removing and cardboard packing.
8. Move the rear console unit into its permanent location.
9. Remove prefilter to expose the motor and blower.
10. Remove cardboard shipping blocks in blower* and replace the prefilter.
11. Slide the front workstation in against the rear console. Adjust leveling feet if necessary to maintain alignment of the
two components.
12. Insert the male connector of cord on workstation into the female receptacle on the console.
13. Plug power cord into 115 VAC grounded receptacle.
14. Wipe interior surfaces of the work area with a mild disinfectant solution.
15. Turn on unit and let run for a few hours before using as a “Class 100” clean environment.
Note: If you encounter any problems or need technical assistance, please call 800.884.0002.
Unit is factory tested. On-site test and certification is recommended to assure proper operation.
CAUTION: FAILURE TO REMOVE THE CARDBOARD SHIPPING BLOCK MAY CAUSE DAMAGE TO THE BLOWER
AND/OR MOTOR THAT IS NOT COVERED BY THE LIMITED WARRANTY.
■
SERVICE
IMPORTANT: DISCONNECT ELECTRICAL CORD BEFORE ATTEMPTING ANY SERVICE.
Fluorescent Lamp Replacement
1. Remove the prismatic diffuser set on the underside of the lamp canopy.
2. Replace the lamps
3. Reassemble by reversing the above procedure.
Fluorescent Fixture Ballast Replacement
Proceed as above, and then disassemble the fixture by removing the two screws, which hold the plate directly above the
lamps. The ballast is then exposed and can be replaced by removing the wire nut connectors and the ballast mounting
screws. Install new ballast in reverse order.
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5
LF HORIZONTAL FLOW BENCH
Operations Manual
Installation & Service Manual
Prefilter Replacement
This filter may be washed or vacuumed. If care is taken to keep the prefilter in good condition, long life may be achieved
for the HEPA filter. Never operate the unit without a prefilter.
1. Lift the prefilter out.
2. Clean the prefilter.
3. Reinstall cleaned prefilter or install new prefilter.
HEPA Filter Replacement
Note: Extreme care must be taken when replacing a new filter so as not to puncture media. Filter should be
handled by its sides at all times. The life of the HEPA filter depends on prefilter maintenance and the ambient
conditions. If the prefilter is clean, the speed control is turned all the way up, and the air drops below 72 FPM,
then the filter should be changed.
1.
2.
3.
4.
5.
6.
7.
Disconnect the plug from console.
Remove the work bench assembly from the front of the console assembly.
Lift the perforated air diffuser up and out.
Remove the hardware and angle clips, holding the filter in place.
Remove the filter by pulling straight out.
Clean the sealant from the filter mounting frame.
Install new filter by reversing above procedure.
Blower Replacement
1. Disconnect power cord.
2. Lift the foam prefilter up and out.
3. Disconnect wires from motor.
4. Remove screws holding blower mounts to vibration isolators.
5. Remove blower from console.
6. Reassemble by reversing the above procedures.
Rate of Flow Adjustment
1. Follow steps 1-2 under “Prefilter Replacement” to expose the speed control.
2. Adjust the speed control knob to obtain desired rate of flow. The solid state speed control is located in the utility
box next to the blower.
3. Reassemble by reversing the above procedure.
6
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LF HORIZONTAL FLOW BENCH
Operations Manual
Installation & Service Manual
■
WIRING DIAGRAMS
LF Console
LF Table
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LF HORIZONTAL FLOW BENCH
Operations Manual
Installation & Service Manual
■
Model
No.
8
ENGINEERING DATA
Dimension in Inches (cm)
Avg.
CFM @
90 FPM
BTU/Hr
Power
Req’d
Amps @
115V
# of
Motor/
Blowers
1/2 HP
Ship Wt.
Lbs. (kg)
A
B
C
D
E
F
LF-430
51.00
(129.54)
65.00
(165.10)
30.00
(76.20)
30.00
(76.20)
24.00
(60.96)
44.00
(111.76)
900
3000
7.5
1
260
(117.93)
LF-530
63.00
(160.02)
65.00
(165.10)
30.00
(76.20)
30.00
(76.20)
24.00
(60.96)
44.00
(111.76)
1125
3000
7.5
1
280
(127.01)
LF-630
75.00
(190.50)
65.00
(165.10)
30.00
(76.20)
30.00
(76.20)
24.00
(60.96)
44.00
(111.76)
1350
3000
7.5
1
300
(136.17)
LF-830
102.00
(259.08)
65.00
(165.10)
30.00
(76.20)
30.00
(76.20)
24.00
(60.96)
44.00
(111.76)
1800
6000
15
2
315
(142.88)
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LF HORIZONTAL FLOW BENCH
Operations Manual
Installation & Service Manual
■
PARTS LIST
Model LF-430 (P/N 10552)
Model LF-530 (P/N 10553)
Item
Description
Qty/Unit
Part No.
Item
Description
Qty/Unit
Part No.
A
Light Lens Package
1
33500
A
Light Lens Package
1
33501
B
Control Panel
1
20230
B
Control Panel
1
20230
C
Plexiglas Sides
2
33483
C
Plexiglas Sides
2
33483
D
Diffuser Screen
1
33566
D
Diffuser Screen
1
33567
E
HEPA Filter (30x48x5 7/8)
1
69262-008
E
HEPA Filter (30x60x5 7/8)
1
69262-007
F
Work Surface
1
33477
F
Work Surface
1
33478
G
Duplex Electrical Outlet
1
66750
G
Duplex Electrical Outlet
1
66750
H
Motor
1
61657
H
Motor
1
61657
I
Power Cord
1
63042-008
I
Power Cord
1
63042-008
J
Solid State Speed Control
1
63982-002
J
Solid State Speed Control
1
63982-002
J*
Solid State Speed Control
1
S23132-15
J*
Solid State Speed Control
1
S23132-15
K
Blower Supports (LH/RH)
2
61812/61813
K
Blower Supports (LH/RH)
2
61812/61813
L
Blower
1
62592
L
Blower
1
62592
M
Vibration Isolators
4
62605
M
Vibration Isolators
4
62605
N
Capacitor
1
61485
N
Capacitor
1
61485
O
Prefilter (24x33.75)
1
62981-003
O
Prefilter (24x33.75)
1
62981-003
P
Leveling Feet
4
60440
P
Leveling Feet
4
60440
Q
Lamps (T12)
2
61918
Q
Lamps (T12)
2
61918
Q
Lamps (T8)
2
63849-002
Q
Lamps (T8)
2
63849-002
R
Motor/Blower Assy
1
S23091
R
Motor/Blower Assy
1
S23091
* Units built before 06/05
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LF HORIZONTAL FLOW BENCH
Operations Manual
Installation & Service Manual
Model LF-630 (P/N 10554)
Model LF-830 (P/N 10555)
Item
Description
Qty/Unit
Part No.
Item
Description
Qty/Unit
Part No.
A
Light Lens Package
1
33502
A
Light Lens Package
1
33503
B
Control Panel
1
20230
B
Control Panel
1
20230
C
Plexiglas Sides
2
33483
C
Plexiglas Sides
2
33483
D
Diffuser Screen
1
33568
D
Diffuser Screen
1
33569
E
HEPA Filter (30x72x5 7/8)
1
69262-006
E
HEPA Filter (30x48x5 7/8)
1
69262-008
F
Work Surface
1
33479
F
Work Surface
1
33480
G
Duplex Electrical Outlet
1
66750
G
Duplex Electrical Outlet
1
66750
H
Motor
1
61657
H
Motor
1
61657
I
Power Cord
1
63042-008
I
Power Cord
1
63042-009
J
Solid State Speed Control
1
63982-002
J
Solid State Speed Control
1
24201-002
J*
Solid State Speed Control
1
S23132-15
J*
Solid State Speed Control
1
23132-25
K
Blower Supports (LH/RH)
2
61812/61813
K
Blower Supports (LH/RH)
2
61812/61813
L
Blower
1
62592
L
Blower
1
62592
M
Vibration Isolators
4
62605
M
Vibration Isolators
4
62605
N
Capacitor
1
61485
N
Capacitor
1
61485
O
Prefilter (24x47.75)
1
62981-019
O
Prefilter (24x33.75)
1
62981-003
P
Leveling Feet
4
60440
P
Leveling Feet
4
60440
Q
Lamps (T12)
2
61918
Q
Lamps (T12)
2
61918
Q
Lamps (T8)
2
63849-002
Q
Lamps (T8)
2
63849-002
R
Motor/Blower Assy
1
S23091
R
Motor/Blower Assy
1
S23091
* Units built before 06/05
10
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LF HORIZONTAL FLOW BENCH
Operations Manual
Installation & Service Manual
■
PARTS LOCATION
■
LIMITED WARRANTY
ENVIRCO CORPORATION warrants all equipment manufactured by it and bearing its name, will be free from defects
in materials and workmanship normal use. ENVIRCO’s obligation under this warranty is to repair or replace any parts,
which are defective for a period of one year after invoice date, provided that ENVIRCO receives written notice of such
defect. For a period of 90 days after invoice date, ENVIRCO may effect such repairs or replacement, via ENVIRCO
Service Personnel, at the equipment’s installation site provided that the equipment is located in the continental United
States and that ENVIRCO receives written notice of such defect. In all other cases, Buyer agrees to assume any
incidental expenses, including, but not limited to, the cost of transporting the defective equipment to ENVIRCO’s repair
facilities. It is expressly agreed and understood that repair or replacement of defective parts is Buyer’s exclusive
remedy under this warranty and that incidental and consequential damages may not be recovered. Excluded from this
warranty are certain expendable items such as light tubes, filters, etc., as well as damage due to abuse or accident.
Except for this warranty, ENVIRCO makes no warranty, express or implied, including but not limited to, the
Warranty of Merchantability, or the Warranty of Fitness for a Particular Purpose. ENVIRCO is not responsible for
any warranties made by another manufacturer.
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ENVIRCO MAC 10 is a registered trademark of ENVIRCO, USA. Specifications subject to modifications or changes without notice. US patents 4,560,395 and 5,470,363. Other patents issued and pending in foreign countries.
ENVIRCO®
101 McNeill Road | Sanford, NC 27330, USA
tel: 919.775.2201 | toll free: 800.884.0002 | fax: 800.458.2379
www.envirco.com | email: info@envirco.com
Copyright © 2017 ENVIRCO. All Rights Reserved.
Form P/N#: 63959 Rev. 02/17
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