Yamato VBE204 User manual

VENTED BALANCE ENCLOSURE
Model
VBE204/214/306/316/408/418/600/610
Instruction Manual
–December 2019 –

Thank you for purchasing the Vented Balance
Enclosure, VBE204/214/306/316/408/418/600/610,
of Yamato Scientific.
To use this unit properly, read this "Instruction
Manual" thoroughly before using the unit.
Keep this instruction manual around this unit for
reference at any time.
WARNING:
Carefully read and thoroughly understand the
important warning items described in this
manual before using this unit.

1
Contents
♦General Information ……………………………………..……………………….. 2
♦Set Up Procedures ………………………………………………………………... 4
♦Exhaust Connection / Filter Change Out ……………………………………... 5
♦General Maintenance/ Cleaning and Sterilizing .…………………………….. 6
♦Models & Specifications …………………………………………………………. 7
♦Replacement Parts ……………………….……………………………………….. 8
♦After Service and Warranty ………………………………………………………. 9

2
General Information
The Vented Balance Enclosures have been designed and engineered to provide operator safety
from airborne particulates during small scale laboratory weighing. The unit features a 25.4mm
thick chemical resistant phenolic resin base, top-mounted HEPA filter fan assembly, horizontal
and vertical airfoils, removable rear baffle, cable-pass thru ports, airflow alarm, and optional Bag
Port chute for waste. The HEPA filter fan assembly includes a backward curved impeller, panel
HEPA Filter, speed control, on/off switch, and house exhaust connection.
During normal operation, the backward curved impeller maintains a face velocity into the
enclosure which prevent particulates from escaping. The impeller pulls air into the enclosure,
through the back baffle and then through the HEPA filter. Any particulates that are generated
inside the enclosure are swept away from the operator and into the back baffle. The air flow alarm
continually monitors the face velocity and alarms when air flow deviates -20% from target face
velocity.
VBE480 Vented Balance Enclosure (front view)

3
General Information

4
Set-up Procedures
INITIAL SET-UP
1. Remove packaging from enclosure. Remove power cord, power supply for air flow alarm and
supplementary air flow alarm information from inside the enclosure. Position the enclosure in your
desired location.
2. Plug main power cord (IEC 60320 -C13) into the input filter module on the back of the HEPA filter
fan assembly.
3. Open the front sash and place laboratory balance inside the enclosure. Run power cords and any
other balance cables through one of the side pass-thrus. NOTE: balance should be positioned
50-60mm from the front horizontal airfoil.
4. Verify that the HEPA filter fan assembly is positioned (seated) over the white filter housing and
the side clamps are secure.
5. Plug the air flow alarm power supply cord into the top of the air flow alarm monitor. Verify that the
sensor probe cable is also attached to the top of the monitor.
6. Plug the HEPA filter fan assembly power cord into a 110/220V socket.
7. Turn the main power switch on. The blower speed control has an “off” position. If the speed
control is in the off position the blower will remain off.
8. Place an anemometer (air flow meter) on the front face of the enclosure. The meter should be
50mm from the front face. Adjust the blower speed control so the face velocity is > 70 FPM (0.355
m/sec).
9. Plug in the air flow alarm into a 110/220V socket.
10. Calibrate the air flow alarm.
Alarm threshold is set at -20% of operational airflow.
•Set DIP switch one to the off position. NOTE: the DIP switch board is located on the back of
the air flow monitor. Set face velocity to 70-80 FPM.
•Use a paperclip and depress the internal switch (located beneath the sound holes on the
monitor) for only three seconds. Audio alarm chirps once.
•During calibration cycle (about 24 seconds), the red LED will flash once per second.
•The calibration is complete when the red LED flashes three times fast and the audio alarm
chirps once.
•The LED light turns green during airflow monitoring and flash once every two seconds.
For additional information, please see supplemental Rooster™ User Manual supplied with this
balance enclosure.

5
Exhaust Connection
CANOPY CONNECTION
•Air gap between house exhaust and VBE exhaust
•Exhaust flow is greater than VBE exhaust flow
•Previously referred to as a thimble connection.
Filter Change-out
1. It is recommended that proper personal protection equipment (PPE) is utilized during filter
change-out.
2. Turn main power off.
3. Remove back baffle. Lift back baffle above lower positioning tabs. Then pull lower portion of the
baffle over the lower positioning tabs and remove from the VBE.
4. From inside the work area of the VBE, push the top clear acrylic plenum panel to the top of the
VBE to seal off the filter opening. Use a vinyl tape and tape the front and back sides of the top
plenum panel to the top of the VBE.
5. Remove the air flow monitor from the side of the filter housing.
6. Lift off the top HEPA filter fan assembly and place on bench top.
7. Place bag (P/N 900-VBE/BAG) over the top of the filter housing and tape to the side of the filter
housing.
8. Using the bag, pull the filter out of the filter housing and up into the bag. NOTE: this is a two
person job.
9. Push the filter into the top of the bag.
10. While holding the filter at the top of the bag, twist the filter and bag 6-7 times to form a tight twist
knot between the filter and filter housing.
11. Secure the twist knot with a wire tie or cable tie to seal the filter in the top portion of the bag.
12. Un-tape the bag from the filter housing and discard sealed bag and filter.

6
General Maintenance Schedule
Weekly: General cleaning (see cleaning procedures).
Annually: Re-calibrate air flow sensor
Cleaning and Sanitizing
Most components consist of cast acrylic, thermoplastics and 304 stainless steel. Like any piece
of fine laboratory equipment, care should be taken to avoid dropping, mishandling, and
misapplication.
Cleaning
Cleaning thermoplastics is best accomplished with a non-abrasive soap or detergent and water
solution. In cases where residues left by the agents is undesirable, special cleaning solvents
may be used. Soaps and detergents will not harm plastics, but several common solvents will.
Recommended cleaners include Novus™ Plastic Polish #1, Brillianize™ cleaner, and Rez-N-
Kleen™
In general, aromatic and chlorinated hydrocarbons will attack most plastic surfaces. This
applies to all plastics used in these products.
Examples of these products include, but are not limited to, acetone, ether, gasoline, lacquer
thinner, methyl-ethyl-ketone, methylene chloride, and toluene.
Polishes
While the above cleaning solutions have some polishing capabilities, they will not remove
scratches from plastic. This can only be done with automotive type waxes or the finer grades of
rubbing or polishing compounds. These products should be specifically for acrylic enamels and
lacquer base
paint.
Scratch Removers
Deep scratches should be first sanded with a fine grit (600 or finer) wet sandpaper. Steel wool
(0000 finest grade) is also very helpful. Use the polishing materials (rubbing compounds)
mentioned above
for the final stage.
Sterilizing
There are several commercially available sterilizing agents and technologies that can be used
on the
cast acrylic isolator. These include:
•Formaldehyde
•Vaporized Hydrogen Peroxide (VHP)
•Chlorine Dioxide gas
•Clidox™
•Diluted Isopropyl alcohol (70%/30%)

7
Models & Specifications
Operational temperature range: 10-35°C (50-95°F)
Operational humidity (RH): 5% to 90% RH, non-condensing
Power:
VBE Series 204/306/408/600 110 VAC, 50/60 Hz., 1.5 amps
VBE Series 214/316/418/610 220/240 VAC, 50/60 Hz., 1 amp
HEPA Filters:
Aluminum frame with upstream/downstream polyurethane gasket.
100mm thick pleat pack
Rated 99.995% @ .3µ (H14)
Blowers:
High efficiency backward curved impeller. Variable speed controller. IP44 protections as
per EN60034-5. Eco-design directive 2009/125/EC
Sound:
<55 dBA @ 80 FPM
European Union (CE)
2014/30/EC (Electromagnetic Capability) 89/686/EEC (Safety) 2014/35/EU (Low Voltage)
EN61326-1:2013
EN55011:2016 Class B
EN61000-3-2:2104
EN61000-3-3:2013
EN61000-4-2:2009
EN61000-4-3:2010
EN61000-4-4:2012
Model # Inside dimensions Outside dimensions
VBE204
VBE214
24.00 w x23.00 d x21.50” h
609 w x584 d x546mm h
26.00 w x26.75 d x41.00” h
660 w x679 d x1041mm h
VBE306
VBE316
35.25 w x23.00 d x21.50” h
895 w x584 d x546mm h
36.50 w x26.75 d x41.00” h
927 w x679 d x1041mm h
VBE408
VBE418
47.25 w x23.00 d x21.50” h
1200 w x584 d x546mm h
48.50 w x26.75 d x41.00” h
1232 w x679 d x1041mm h
VBE600
VBE610
59.25 w x23.00 d x21.50” h
1505 w x584 d x546mm h
60.50 w x26.75 d x41.00” h
1537 w x679 d x1041mm h
Environmental:

8
Replacement Parts
ITEM # DESCRIPTION
MS2027 Vinyl Tape, EL1131Power Cord, EU 1- 16, 2.5M long
EL1622 Speed Control, 230 VAC
SPL0026 Speed Control, 110 VAC
EL1681 Impeller, 230VAC, 530CFM
EL1682 Impeller, 110VAC, 530 CFM
EL1703 Capacitor, 10 uF, for 110 VAC impeller
ELl683 Capacitor, 2uF, for 230 VAC impeller
900-BE/24/HEPA HEPA Filter, 24” x 18”,
Rated: 99.995% @ .3 µ (H14)
900-VBE/36/HEPA HEPA Filter, 30” x 18”
Rated: 99.995% @ .3 µ (H14)
900-VBE/BIBO Bag In/Bag Out Port 9
900-VBE/BIBO/BAG Waste Bag for BIBO port
900-VBE/BAG/SFilter Bag, 24 x 20 x 48”
900-VBE/BAG/L Filter Bag, 30 x 18 x 48”

9
After Service and Warranty
Yamato Warranty Policy
Yamato Scientific America warrants, from the date of shipment from Yamato warehouse, for a period of
one (1) year. All products, parts and materials shall be free of defects in material and workmanship
under normal use consistent with the product instructions. This product warranty does not apply to
products purchased from unauthorized resellers/distributors.
Yamato reserves the right to inspect the product under claim before having an obligation to repair or
replace the defective unit covered by this warranty. All costs of shipping to Yamato for inspection shall be
borne solely by the purchaser. Products repaired or replaced under the terms of the warranty may be
refurbished or new product will be provided at the discretion of Yamato.
Warranty Conditions
This warranty does not apply to equipment or parts which fail because of abuse, accident, alteration,
misuse, erosion, improper installation, or improper replacement of a repaired item.
Consumables such as gloves, bulbs, or filters are not covered under this warranty.
The buyer assumes all risks for results obtained from these products, whether used alone or in
combination with other items. It is expressly understood that we are not responsible and will not be held
liable for damage and/or injury caused using our products.
Product Return Policy
If you are not satisfied with your purchase and wish to make a return, contact our customer service to
inquire about a Return of Merchandise Authorization Number (RMA). Merchandise returned without an
RMA number will not be accepted and will be returned to the sender. Return requests must be made
within 15 days of the customer’s receipt of the merchandise.
All returns must be unused and in unopened original packaging and include all items and manuals
originally shipped.
The purchaser is responsible for the shipping cost of return shipment. Insurance on the return shipment
is required. Damage or loss of merchandise during shipping is the responsibility of the sender. Returned
shipments that arrive damaged will be returned back to the sender, and credit will not be rendered.
All returned products, parts and materials are subject to a 25% restocking fee. Shipping and handling
cost are non-refundable. All retrofitted, customized and special order item sales are final and non-
returnable.
In Case of Request for Repair
If the failure occurs, stop the operation, turn OFF the power switch, and unplug the power plug. Please
contact the sales agency that this unit was purchased, or Yamato Scientific's sales office.
<Check following items before contact >
◆Model Name of Product
◆Serial Number
◆Purchase Date
◆Issue (as detailed as possible)

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Responsibility
Please follow instructions in this document when using this unit. Yamato Scientific has no responsibility
for accidents or breakdown of device due to failure to comply.Never conduct what this document
forbids as unexpected accidents or breakdown may result.
Instruction Manual for Vented Balance Enclosures
Model VBE204/214/306/316/408/418/600/610
December 2019
Yamato Scientific America Inc.
925 Walsh Ave, Santa Clara, CA 95050
Tel: [phone]
http://www.yamato-usa.com
For customer service:
Email: [e-mail]
For technical support:
Email: [e-mail]