Monmouth Scientific Circulaire HLFT1000 Installation and operation manual

Operating & Maintenance Manual
www.monmouthscientific.co.uk
Circulaire® Horizontal & Vertical
Laminar Flow Cabinets
HLFT1000/HLFT1200/HLFT1500/HLFT1800
VLFT1000/VLFT1200/VLFT1500/VLFT1800

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Table of Contents
Table of ContentsTable of Contents
Table of Contents
Section 1 .......................................................................... 4
Description of the cabinet.............................................................................. 4
Section 2 .......................................................................... 5
Installation ..................................................................................................... 5
General ......................................................................................................... 5
Testing / Co issioning ............................................................................... 6
Control Syste ............................................................................................. 6
La inar Airflow ............................................................................................. 6
Filter Pressure ............................................................................................... 6
Section 3 .......................................................................... 7
Controls......................................................................................................... 7
Operation ...................................................................................................... 8
Fan control .................................................................................................... 8
Standby Mode ............................................................................................... 9
Eco Mode ...................................................................................................... 9
Lighting ......................................................................................................... 9
Supervisor Settings ..................................................................................... 10
UV Disinfection (Option) ............................................................................. 13
Section 4 ........................................................................ 14
Maintenance ............................................................................................... 14
Fuses .......................................................................................................... 14
Led Lighting ................................................................................................ 14
Pre-Filter(S) ................................................................................................ 14
Main ULPA Filter ......................................................................................... 15
Section 5 ........................................................................ 16
Servicing ..................................................................................................... 16
Mon outh Scientific Ltd .............................................................................. 16
This anual is intended to provide infor ation about the product.
Mon outh Scientific Li ited assu es no liability whatsoever for the accuracy of any
infor ation contained herein, as products can be subject to i prove ent changes at any
ti e.
The contents ay not be distributed, shared or co ercially exploited in any for or by any
eans, redistributed or reproduced in entirety or in part in any for , for individual or third
party use, photocopied or stored on any for of electronic retrieval syste or linked to any
other website, without the prior express written per ission of Mon outh Scientific Li ited.
For per ission requests, please contact:
Mon outh Scientific Li ited,
Units 5 & 5 Kilnside, East Quay, Bridgwater, So erset, TA6 4DB.
E ail: info@ on outhscientific.co.uk
Tel: [phone]

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Warning
This cabinet must be used in compliance with these instructions and
any repairs or maintenance carried out by ualified personnel.
For parts or service information please contact Monmouth Scientific on:
[phone]
Section 1
Description of the cabinet
The Circulaire range of La inar Flow cabinets provide ISO class 4 (Class 10) clean
air at a velocity >0.35 /sec. over the entire working area. The cabinets are supplied
in sizes to suit ost applications. All cabinets are fitted with an airflow onitor which
provides visual and audible warning should the airflow drop below the ini u level.
MODEL
Circulaire
VLFT1000
Circulaire
VLFT1200
Circulaire
VLFT1500
Circulaire
VLFT1800
External
Dimensions
1000 Wide
665 Deep
1250 High
1200 Wide
665 Deep
1250 High
1500 Wide
665 Deep
1250 High
1800 Wide
665 Deep
1250 High
Internal
Dimensions
985 Wide
645 Deep
700 High
1185 Wide
645 Deep
700 High
1485 Wide
645 Deep
700 High
1785 Wide
645 Deep
700 High
MODEL Circulaire
HLF
T
900
Circulaire
HLF
T
1000
Circulaire
HLF
T
1200
Circulaire
HLF
T
1500
Circulaire
HLF
T
1800
External
Dimensions
900 Wide
700 Deep
1165 High
1000 Wide
700 Deep
1165 High
1200 Wide
700 Deep
1165 High
1500 Wide
700 Deep
1165 High
1800 Wide
700 Deep
1165 High
Internal
Dimensions
885 Wide
490 Deep
715 High
985 Wide
490 Deep
715 High
1185 Wide
490 Deep
715 High
1485 Wide
490 Deep
715 High
1785 Wide
490 Deep
715 High

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COM
N/C
N/O
Section 2
Installation
General
The cabinet is supplied fully asse bled and ready for use.
The following guidelines should be observed when installing the cabinet:
 Site the cabinet in a draught free position with a ini u of 200 fro the top
of the cabinet to the ceiling to prevent obstructing the air inlet and to provide
access to change the pre-filter. Installation within a clean area is preferred as this
will axi ise and prolong filter life.
 Connect the cabinet to a 13A electrical socket.
 Optional VFC relay.
A Volt-free contact is available as a factory-fit option. If fitted, it is located to the
rear of the cabinet next to the power inlet. This allows for connection to external
onitoring syste s/BMS etc.
When the cabinet is powered on, after approx. 30 secs, the relay will be
energized, when the cabinet airflow alar is triggered or the unit is powered off,
the relay is de-energized.
Relay is rated at 0.5A@125Vac / 1.0A@30Vdc/ 0.3A@60Vdc, nor ally open
contacts
An unter inated plug is provided for user connection and should be wired as
below.

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Testing / Commissioning
A test certificate will be supplied for confor ity to CE arking, and electrical test.
The airflow should be checked using a vane ane o eter and the results recorded.
The ain ULPA (U15) filter will have been factory tested before delivery. A DOP filter
challenge test should be carried out to verify filter integrity when the cabinet is
installed.
THE CABINET SHOULD BE TESTED EVERY 12 MONTHS.
Control System
The cabinet is controlled and onitored by a icroprocessor with an LCD touch
screen. The touch screen provides the operator with general infor ation about the
cabinet and displays the current la inar velocity and differential pressure across the
ULPA filter. Control of light level, fan speed and other operating settings are all
accessed via a enu syste . The control syste is factory set to aintain the
following para eters:
Nor al airflow velocity: 0.40 /sec.
Low airflow alar : 0.30 /sec.
These settings can be changed by Mon outh service personnel. Please contact
Mon outh Scientific for further advice.
Laminar Airflow
The icroprocessor controls the fan speed to co pensate for filter blockage.
The airflow velocity is continuously onitored and displayed. The value will
fluctuate slightly during nor al operation, this is nor al and is an indication
that the fan is under icroprocessor control. If preferred the units displayed
can be changed to ft/ in. in the Supervisor Settings.
Filter Pressure
The cabinet is fitted with a pressure sensor which onitors the pressure drop
across the ain ULPA filter. Over ti e, as the filter beco es blocked the
pressure will slowly increase. When the pressure reaches the reco ended
axi u (250pa) a warning will be displayed. The filter is protected by a pre-
filter and should last several years if properly aintained and the cabinet is
deployed within a clean area.

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Section 3
Controls
Light On / Off
Reduce Brightness
Increase Brightness
Nor al
Fan
Spee
d
Fan Off
Settings - access to settings enu
Infor ation - Cabinet and filter infor ation
Standby - Puts cabinet into standby
UV
Disinfection
s
ettings (where fitted)
Ho e
Return/Back
Fan
Speed
2

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Operation
The ain on/off switch is located on the right-hand side near the top of the cabinet.
When first turned on, the cabinet will perfor so e checks and after a short period
the fan will start.
The screen provides the operator with general status and instructions for use.
Using the buttons to control and adjust the cabinet.
Fan control
By default, the cabinet will start and run at the NORMAL setting.
Pressing the button will present the user with options to select NORMAL /
SPEED 2 or OFF
SPEED 2 is a preset that can be set higher or lower then NORMAL. An exa ple of
it’s use could be to set higher to rapidly purge the cabinet** or lower to conserve
energy when a non-critical task takes place within the cabinet.
(Settings to allow the user to preset the fan speeds are accessed in the Supervisor or Service
enu).
Selecting OFF will turn the fan off. All other cabinet features such as the ighting will
re ain on.
** The user should aware that an airflow velocity above nor al will substantially
increase power consu ption and noise levels, in addition it will also reduce filter
lifespan.

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Standby Mode
The cabinet can be put into standby ode by pressing the key. When in standby
ode the fan, lights and control syste are turned off.
Nor al operation is resu ed by touching anywhere on the darkened screen.
If the cabinet is not to be used for several days, the cabinet can be turned off at the
ain on/off switch if preferred.
Eco Mode
If enabled in the supervisor settings, Eco is effectively an auto atic Standby ode
that turns off the lights if no activity is detected within the cabinet for a pre-selected
ti e. The fan speed is unaffected and will continue to run at the currently selected
setting.
Nor al operation is resu ed by touching anywhere on the darkened screen.
Lighting
Lighting can be adjusted or turned off by pressing the button.
Adjust ents can be ade by pressing the or buttons. Pressing the twice
will turn the lights off. Pressing again will turn the lights back on.

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Supervisor Settings
Pressing the key on the ain screen enters the Set-Up enu access screen.
The Supervisor access code is supplied with the cabinet and allows access to
change operating preferences.
The key returns to the nor al display screen.
When the correct Supervisor code is entered the screen below is displayed.

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Laminar Airflow Display - Select preferred velocity units.
ECO Mode - Choosing this option will enable ECO ode.
Eco ode turns off the lights if no activity is seen inside the cabinet for a ti e period
set by the Eco Mode Ti e Delay at the botto of the screen. Nor al operation will
be resu ed when operator touches the screen.
Audible Alarm - Turns off the audible low airflow alar .
Keypad Sounds - Turns off the audible key beeps.
Pressing the key returns to the previous screen.
Reset UV - Displays a UV reset screen to reset the date / hours run when a new UV
tube is fitted. This key/page will only be displayed on odels fitted with a UV
disinfection option.
Change access code – This allows the supervisor to set their own access pin code
(Default set to 4916)
Set Time - displays a ti e / date setup screen
Pressing “No” returns to the previous screen without resetting.

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Set Normal Fan speed – Opens a dialogue page that allows the user to set the fan
speed when the NORMAL button is pressed. Follow the on-screen pro pts to set.
Set Fan speed 2 – Opens a dialogue page that allows the user to set the fan speed
when the 2
nd
fan speed button is pressed. Follow the on-screen pro pts to set.
Be aware that an airflow lower than 0.3 /sec will trigger the low airflow alar . If you
need to run the cabinet in this state then please recalibrate the alar to trigger at a
point below your lowest setting.
Information
Pressing the key on the ain screen will display the infor ation screen below
featuring key infor ation about the unit.
Service infor ation is reset by Mon outh personnel during a service visit. When a
service beco es due, a warning screen will be displayed o entarily on start-up
during the proceeding onth.
Pressing the key will display additional infor ation of the filters fitted and UV tube
life. The key will return to the previous screen.

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UV Disinfection (Option)
The cabinet is equipped with an ultraviolet ger icidal la p for additional disinfection
purposes. The la p is UV-C (254n ) 30w.
Note - For the UV la p to be effective, the target MUST be in direct line of sight with the light
source. It is also the user’s responsibility to satisfy the selves whether it is suitable for the
intended process.
Pressing the button on the ho e screen will display the screen below
The safety screen is interlocked with the UV disinfection cycle and the cycle will not run if it is
not fitted. Use the arrow keys to set the disinfection ti e and cycle start delay if required.
Press “Start Cycle” to co ence. The screen below is displayed showing progress & ti e
re aining until the end of the cycle.
If the safety screen is re oved or the “cancel” button is pressed the cycle will ter inate.
At the end of the cycle (or if aborted), the following screen is displayed. Follow the instructions
to return to nor al operations or return to UV setup.

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Section 4
Maintenance
The cabinet should be isolated from the electricity supply before carrying out
any maintenance procedures. All work should only be carried out by suitably
ualified personnel.
Fuses
The ain fuses are located within the ains inlet socket on the top of the
cabinet. Re ove the ains lead and withdraw the fuses using a s all
screwdriver. Always replace with the correct type and rating – 5A Type T. The
electrical socket is protected by 5A Type T fuse located adjacent to the socket
outlet.
Led Lighting
The high efficiency, low voltage LED light tubes are fitted to the inside of the
enclosure. They should provide any years of service without requiring replace ent.
Spare tubes are available fro Mon outh Scientific and have the following part
nu bers:
HLF
VLF
Part
#
HLFT 900 n/a GS-01514
HLFT
1000
VLFT
1000
GS-01539
HLFT
1200
VLFT
1200
HLFT
1500
VLFT
1500
GS-01540
HLFT
1800
VLFT
1800
Care should be taken to ensure the tubes are fitted in the correct orientation with the
red+ arking on the tube aligning with red ark on the fitting.
Pre-Filter(S)
This is located on top of the cabinet and can be changed by re oving the two
thu bscrews on the securing fra e. Mon outh Pre-Filter part No: K-PF0022
HLF
VLF
Part
#
QTY
REQUIRED
HLFT
900
n/a
K-PF0022
1
HLFT
1000
VLFT
1000
1
HLFT
1200
VLFT
1200
1
HLFT 1500 VLFT 1500 2
HLFT
1800
VLFT
1800
2

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Main ULPA Filter (VLFT units)
 Open the control panel by re oving the 2 screws inside the lower cabinet.
 Re ove the two filter cla p bolts.
 Lift and hold open the head asse bly using the prop at the right hand side.
 The ULPA filter ay now be withdrawn fro the front of the cabinet and a
replace ent fitted.
 The replace ent filter should be DOP tested prior to use and the airflow and
alar re-calibrated if necessary.
Main ULPA Filter (HLFT units)
 Re ove the screws securing the back panel and lift it clear.
 Re ove the screws securing the filter cla p fra e.
 The HEPA filter ay now be withdrawn fro the rear of the cabinet and
a replace ent fitted.
 The replace ent filter should be DOP tested prior to use and the airflow and
alar re-calibrated if necessary.
Model
Part #
HLFT 900 K-HF0139
HLFT
1000
K
-
HF0140
HLFT 1200 K-HF0141
HLFT
1500
K
-
HF0142
HLFT 1800 K-HF0143
Model
Part #
VLFT1000 K-HF0135
VLFT
1200
K
-
HF0136
VLFT 1500 K-HF0137
VLFT
1800
K
-
HF0138

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Section 5
Servicing
An annual service is reco ended to aintain opti u operating conditions and will
include the following points:
 Check / replace pre-filter
 DOP test the ain ULPA filter
 Check airflow onitor and re-calibrate if necessary
 Check and record downflow velocity readings
 Check general condition of cabinet - glazing, hinges etc.
 Inspect electrical co ponents, lighting, cables etc.
 Issue test report and airflow certificate.
For parts or service information:
Please contact Monmouth Scientific on: [phone]

British Design
& Manufacture
Monmouth Scientific Limited
UK Headquarters
Units 5 & 6 Kilnside,
East Quay,
Bridgwater,
Somerset,
TA6 4DB.
[phone]
www.monmouthscientific.co.uk
[email protected]