Fume Extraction
Inspection
TECHNICAL BULLETIN TB-4014
Made in Britain
Remove the Fume Extractor from the shipping carton and
inspect for damage.
Items included with model
35441:
1 – MENDA Solo Extractor with one inlet, 220VAC
1 – 50mm ESD Stay Put Extraction Arm with Nozzle
1 – 50mm Flex Hose
1 – Flip Top Flush Seal Mounting Plate includes a
grounding wire with ring terminal
1 – Table Bracket Installation Kit
2 – Jubilee Clips
1 – Sleeve
1 –
35451
Combined Filter (HEPA)
1 –
35450
Pre-Filter, Pack of 5
35452
Gas Filter is availible as an option
Items included with model
35446:
1 – MENDA Duo Extractor with two inlets, 220VAC
2 – 50mm ESD Stay Put Extraction Arms with Nozzle
2 – 50mm Flex Hoses
2 – Flip Top Flush Seal Mounting Plate includes a
grounding wire with ring terminal
2 – Table Bracket Installation Kits
4 – Jubilee Clips
2 – Sleeves
1 – Black Inlet Cover
1 –
35451
Combined Filter (HEPA)
1 –
35450
Pre-Filter, Pack of 5
35452
Gas Filter is availible as an option
Items included with model
35462:
1 - MENDA Quad Extractor with two inlets, 220VAC
1 -
35461
Filter Replacement Set
All accessories are sold separately.
2 - Item
35459
(75mm Funnel Arm) are recommended.
Power cords for all items must be ordered separately.
35446
35441
35459 - 75mm Mounted Arm Funnel
Back
BACK
35461 - Filter Replacement Set
35462
3651 Walnut Avenue, Chino, CA 91710 • Phone: (909) 627-2453 • Web Site:
MendaPump.com
TB-4014
July 2016 Page 1 of 10
© 2016 DESCO INDUSTRIES INC.
Employee Owned
Installation
Extractor Installation Procedure
Move the unit to the location where it is going to be
installed and remove the unit from its packaging.
Caution
• The unit should be installed in a well ventilated room.
• Ensure that a 46cm space is available around any
louvered areas of the unit to ensure adequate air flow.
• Do not block or cover any louvers or cooling holes
on the unit as this severely restricts air flow and may
cause damage to the unit.
•
The filtered air exhaust is at the base of the 35441,
35446 and 35462 units.
• Under no circumstances should the exhaust outlet(s)
be covered as this will restrict the airflow and cause
overheating.
•
Check filters are located in their correct position and
carefully replace lid.
Connect the extraction ducting between the extractor
inlet(s) and the extraction arms using hose adaptors
and jubilee clips as required. Ducting runs should be
kept as short as possible.
The 35441 and 35446 are supplied with an installation
kit. This kit gives the option of fixing the extraction
arms through the workbench using the flip top flush
sealing mounting plates (Figure 2) or the clamp on
bench mount brackets as preferred (Figure 3). The top
of the work bench must be suitably drilled using a 2.5"
hole cutter if the flip top flush sealing mounting plates
are used. When using the flip top use the grounding
wire with ring terminal to ground the ESD Stay Put
Extraction Arm with Nozzle (Figure 1) to equipment
ground (preferably 3-wire AC outlet ground).
For the 35462 the required installation fittings would
have been selected at the time of ordering.
Figure 1
Arm
Bolt
Flip Top
Table
Arm
Bolt
Flip Top
Table Bracket
Sleeve
Jubilee Clip
C-clamp
Sleeve
Jubilee Clip
Flex
Flex
Jubilee Clip
Lid 50mm Inlet
Jubilee Clip
Lid 50mm Inlet
Figure 2
Figure 3
3651 Walnut Avenue, Chino, CA 91710 • Phone: (909) 627-2453 • Web Site:
MendaPump.com
TB-4014
Page 2 of 10
© 2016 DESCO INDUSTRIES INC.
Employee Owned
Operation
On/Off switch
These extractor units are turned on and off by
using the switch on the front or rear of the unit. See
the note below for units supplied with a remote flow
control box.
Single LED Filter condition indication
On 35441 and 35446 units only,
an LED on the front panel of the
machine will illuminate when the
filters need attention.
See the Maintenance section for information on
changing filters.
Filter replacement indication
The first few filter changes should only apply to the pre-
filter. The indication that the Combined or Gas / HEPA
filter needs replacing is when the filter alarm signal and
LED’s (if fitted) do not go off after the pre-filter has been
changed.
Please note that the carbon media within the combined
filter or Gas filter is hygroscopic and will absorb moisture
from the atmosphere. This is why these filters should be
changed every twelve months regardless.
The filter change procedure depends on the specific
model of extractor. (See layout diagrams below)
Maintenance
General
User maintenance is limited to cleaning the unit
and replacing the filters with new. Only MENDA
is authorized to carry out component testing and
replacement. Unauthorized work or the use of
unauthorized replacement filters may result in a
potentially dangerous situation and/or damage
to the extractor unit, and will invalidate the
manufacturer’s warranty.
Cleaning Unit
The powder coated finish can be cleaned with a
damp cloth and non-aggressive detergent. Do
not use an abrasive cleaning product as this will
damage the finish.
The cooling inlets and outlets should be cleaned
once a year to prevent build up of dust and
overheating of unit
Replacing Filters
The filter package needs attention when the filter
change signal is alarmed and red LED’s on the unit
are illuminated.
A log of filter changes should be maintained by the
user.
All filters are tested to BS3928. A certificate on
conformity for each filter is available on request.
It is recommended that a spare set of filters are
kept on site to avoid prolonged unit unavailability.
Refer to the consumable spares table.
Caution
To prevent overheating, units should not be
run with a blocked filter condition, or with dust
obstruction of inlets or outlets.
35441 & 35446
35462
Figure 4
Filter replacement 35441, 35446, 35462
1. Isolate the electrical supply to the extractor.
2. Undo the protex clips on either side of the unit and lift
the lid or motor section clear of the filter package and
place on a safe surface.
3.
Remove the filter package from the base of the unit.
4. Vacuum out any dust in the base. (We recommend
using a Menda Omega Field or Service Vac).
5.
Remove the pre-filter, which may be recessed into
the combined filter. (See Figure 4)
6.
Replace the exhausted pre-filter, or combined filter,
or Foam filter as necessary.
7.
Place the filter package back into position. Replace
the motor section, fasten the protex clips and start up
the unit.
3651 Walnut Avenue, Chino, CA 91710 • Phone: (909) 627-2453 • Web Site:
MendaPump.com
TB-4014
Page 3 of 10
© 2016 DESCO INDUSTRIES INC.
Employee Owned
35441 System Specifications
Capacity:
Size:
Weight:
Exhauster:
Rated Output:
Electrical supply:
Full Load Current:
Noise level:
Filters:
53 CFM
height 38.1cm x depth 25.4cm x
width 25.4cm
7kg
Centrifugal fan
60w (65w)
220V 1ph 50Hz
0.3A (0.65A)
54dB (A)
Pre-filter
Combined filter
Surface area
Efficiency F7
Surface area
Efficiency H13
Impregnated Carbon
Duct Size:
Duct Run:
50mm
3 meters
0.06 m²
85% @ 0.8µ
2.0 m²
99.997% @ 0.3µ
35446 System Specifications
Capacity:
Size:
Weight:
Exhauster:
Rated Output:
Electrical supply:
Full Load Current:
Noise level:
Filters:
125 CFM
height 38.1cm x depth 25.4cm x width
25.4cm
10kg
Centrifugal fan
140w (95w)
220V 1ph 50Hz
1.1A (1.4A)
55dB (A)
Pre-filter
Combined filter
Surface area
Efficiency F7
Surface area
Efficiency H13
Impregnated Carbon
Duct Size:
Duct Run:
2 x 50mm
5 meters
0.06 m²
85% @ 0.8µ
2.0 m²
99.997% @ 0.3µ
3651 Walnut Avenue, Chino, CA 91710 • Phone: (909) 627-2453 • Web Site:
MendaPump.com
TB-4014
Page 4 of 10
© 2016 DESCO INDUSTRIES INC.
Employee Owned
35462 System Specifications
Capacity:
Size:
Weight:
Exhauster:
Rated Output:
Electrical supply:
Full Load Current:
Noise level:
Filters:
Duct Size:
Duct Run:
320 CFM
height 5.3m x depth 4.4m x width 4.4m
23kg
Centrifugal fan
240W (255W)
220V 1ph 50Hz
1.8A (3.5A)
60dB (A)
Pre-filter
Gas activated carbon foam
4 x 50mm or 2 x 75mm
6 meters
Efficiency F8
85% @ 0.8µ
The 35462 will run a maximum of six 50mm arms or four 75mm arms and with a maximum duct run of 5 meters.
Limited Warranty
Menda expressly warrants that for a period of one (1) year from the date of purchase, Menda Fume Extraction Units will be free of defects
in material (parts) and workmanship (labor). Within the warranty period, the product will be tested, repaired, or replaced at Menda’s option,
free of charge. Call our Customer Service Department at +44 (0) 189 266 5313
for a Return Material Authorization (RMA) and proper
shipping instructions and address. Include a copy of your original packing slip, invoice, or other proof of purchase date. Any unit under
warranty should be shipped prepaid to the Menda factory. Warranty repairs will take approximately two weeks.
If your unit is out of warranty, call Customer Service at +44 (0) 189 266 5313 for a Return Material Authorization (RMA) and proper
shipping instructions and address. Menda will quote repair charges necessary to bring your unit up to factory standards.
Warranty Exclusions
THE FOREGOING EXPRESS WARRANTY IS MADE IN LIEU OF ALL OTHER PRODUCT WARRANTIES, EXPRESSED AND IMPLIED,
INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH ARE SPECIFICALLY DISCLAIMED. The
express warranty will not apply to defects or damage due to accidents, neglect, misuse, alterations, operator error, or failure to properly
maintain, clean or repair products.
Limit of Liability
In no event will Menda or any seller be responsible or liable for any injury, loss or damage, direct or consequential, arising out of the use
of or the inability to use the product. Before using, users shall determine the suitability of the product for their intended use, and users
assume all risk and liability whatsoever in connection therewith.
3651 Walnut Avenue, Chino, CA 91710 • Phone: (909) 627-2453 • Web Site:
MendaPump.com
TB-4014
Page 5 of 10
© 2016 DESCO INDUSTRIES INC.
Employee Owned
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