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D-Vac Model 24 PO Box 1555, Ventura, CA 93002 800-248-2847 *
805-643-5407 * fax 805-643-6267 e-mail
bugnet@rinconvitova.com www.rinconvitova.com |
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D-VAC VACUUM INSECT COLLECTOR
BACK-PACK MODEL 24
There are two D-VAC insect Collectors available:
Model 24, mounted on a backpack, and Model 122 which is smaller, carried by
hand. Both are powered by gasoline engines for complete freedom in the field.
Insects are collected live in organdy bags and may be studied in the field or
taken to the laboratory for separation.
The backpack collector Model 24 is the most
useful for heavy-duty sampling where large numbers of samples or long
continuous samples are to be taken. It can be used with the Special Collecting
Cone (#302) for "square foot" ground samples and with the 4 inch
Adapter Hose (#306) for more concentrated suction.
The advantage of D-VAC vacuum sampling is the
more complete extraction of the tiny species and the immature forms of even the
larger insects. Conventional sweep nets build up a pressure and insects of low
body mass simply do not enter these nets as they are caught in the overflow of
air pressure built up as the net is sent through the air. By applying suction
to the collecting bag, this inertia of air at the entrance of the net is
overcome and the tiny forms are collected more readily. Using a similar
approach to the plant as is done with the swinging of an insect net, the D-VAC
can also sample the heavier worms, etc. This is the advantage of using a
sweeping motion rather than relying only on the vacuum capability. This machine
is not a high vacuum, but more a mover of air in large volume. The cones can
concentrate the air flow at the entrance of the net and thus increase the
collection capability. It is advisable to approach the plant as quickly as
possible to surprise and thereby catch a larger proportion of the quick flying
species and the ones that tend to drop or to hold on vigorously if they are
warned of the approach of the collector.
The D-VAC sampling method is very useful in
pest management programs to assess the balance of predators and parasites as
well as pests. There have been references in entomological literature to the
use of the D-VAC collectors in scientific experiment-s by university and United
States Department of Agriculture scientists. They have been used in 50 states
in the United States and more than 52 countries.
The basic units come with engine, collecting
unit, 1 collecting cone (usually ½ ft2) 4 organdy bags (D401) and 1 sieve bag
(D402). The other heads and replacement parts are available at extra cost.
D-VAC
Vacuum Insect Net Model 24 (Backpack Model) |
International standard for insect sampling |
|
DVAC24 |
each |
1,900.00 |
Nylon organdy
bag, muslin cuff |
replacement bag |
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D401 |
each |
10.00 |
Medium mesh sieve
bag |
replacement bag |
|
D402 |
each |
6.50 |
Optional
Accessories |
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Collecting unit
13.5 in. dia cylinder |
|
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D203 |
each |
250.00 |
Fiberglass Collar |
protective collar |
|
D301 |
each |
29.00 |
Special sampling
cone, 1 ft2 opening |
ground surface, screened opening for turf
sampling |
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D302 |
each |
79.00 |
Collecting cone ½
ft2 opening |
|
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D303 |
each |
34.00 |
Collecting cone
1/3 ft2 opening |
|
D304 |
each |
34.00 |
|
Collecting cone ¼
ft2 opening |
|
D305 |
each |
34.00 |
|
Adapter hose 4
inch dia. |
turf samples |
|
D306 |
each |
66.00 |
Flexhaust hose 8
inch dia,6 ft 8 in long |
replacement hose Model 24 |
|
D201 |
each |
111.40 |
D-VAC VACUUM
INSECT SAMPLING MACHINE MODEL 24
D-Vac
Vacuum Insect Net – Model 24
The D-VAC Model 24 is a vacuum insect
collector powered by a Briggs & Stratton 3.75 H.P. engine. The motor and
fan are mounted on a back-pack carrier. The fan is a Revcor squirrel-cage
blower with forward curved blades. A 6-foot 8-inch length of 8-inch diameter
flexible air duct connects from the bottom of the fan to the collecting unit. A
13-inch diameter fiberglass collecting cylinder is attached by a coated-fabric
sleeve to the flexible air duct. A nylon organdy bag fits inside the collecting
cylinder and is held in place by a protective collar. Four organdy bags with
muslin cuff, one screen sieve bag and one collecting cone (No. 304 cone with
1/3 square foot opening) are included with each D-VAC collector.
WARRANTY: The engine is warranted by the Briggs &
Stratton Corp. The collecting unit is of lightweight materials guaranteed
against defective workmanship for 90 days by D-VAC Co.
AIRFLOW
CAPACITY: 750 cu/ft/mm at collecting
head; 2149 cu/ft/min at 8 in. hose opening
TYPE OF .
FUEL USED: Regular unleaded gasoline.
See manual for fuel and oil recommendations.
TYPE OF
STARTER: Recoil with nylon rope
MANUFACTURER
OF FAN UNIT: Fan Equipment Co., Las
Vegas, NV
NET WEIGHT
OF COMPLETE UNIT: approximately 35
pounds (16 kilos)
SHIPPING.
WEIGHT: approximately 61 pounds (28
kilos)
D-VAC
VACUUM INSECT NET MODEL 24
(as described above) - - $1,900.00 plus freight
#302 Special Sampling Cone 1 3 1/2 in. diameter cone for
1 sq. ft. samples on the ground surface $79.00
Collecting
Cones, each, $34 #303 - 1/2 sq. ft.
opening
#304
- 1/3 sq. ft. opening
#305 - 1 /4
sq. ft opening
#306
Adapter Hose 4 inch diameter flexible hose for complete turf samples $66.00
Extra
Collecting Bags: #401
Organdy Bag with muslin cuff each $10.00
D-VAC VACUUM INSECT SAMPLING MACHINE MODEL 24
Parts and
Accessories
Accessories Included
MOTOR FAN UNIT
1024 Motor
and fan
1021 Solid
back rack.
HOSE UNIT
201 8
in diameter flexible hose (6 ft. 8 in. length)
202 Adjustable
ring clamp $3.10
COLLECTION UNIT
203 13-1/2" diameter fiberglass cylinder
with connecting sleeve, aluminum braces with ring clamp, tension1 hooks, handle
and collar (301)
304 1/3
square foot collecting cone
COLLECTING BAGS
401 Nylon
organdy bags (4 included)
402 Medium
mesh sieve bag (1 included)
Accessories Not Included or Extra
Parts Available On Order
302 Special Sampling Cone $79.00
13 1/2" diameter cone for 1 sq.
ft. plant samples on the ground surface
Collecting
Cones each $34.00
303 1/2 sqft. opening
304 1/3 sq.ft. opening
305 1/4 sq. ft. opening
306 Adapter Hose
$66.00
4 in. diameter flexible hose for complete
turf samples
D201 Replacement hose for Model 24 8 inch dia
flexhaust 6 ft 8 in long each $111.40
Extra Collecting Bags: (per bag)
401 Nylon
Organdy with Muslin Cuff- $10.00
402 Screen
Sieve Bag $6.50
D-VAC
VACUUM INSECT SAMPLING MACHINE
BACK PACK MODEL 24
B&S
INSTRUCTIONS
FOR ASSEMBLING AND OPERATING: Follow manual instructions.
Remove
all parts from packing and ready the motor for operation (See manual) Gasoline
for motor should be regular unleaded without oil. Use SAE grade 30 oil in
crankcase Do not mix oil with gasoline. Attach the 8 inch Flexible Hose (201)
to the fan intake with the ring clamp and side braces, extending the sleeve to
its full length.
ADDING
THE COLLECTING BAG AND COLLECTOR CONE:
Remove
the 2 inch Protective Collar (301) from the end of fiber-glass cylinder. The Nylon
Organdy Bag (401) fits inside attached cylinder with the muslin cuff folded
over the edge. Secure edge of bag with protective collar. Attach Handle with
bolt and wing nut. Start the motor (see motor instructions) holding the
collecting head off the ground. Adjust the motor speed for desired air flow.
Put your right arm through the right shoulder strap, lift and swing the motor
to your back, then slip left strap over your left shoulder.
FOR
FIELD CROPS:
Use
the collecting cone of the right size for the plant. Take the handle in one
hand and the side brace in the other. Place cone over the plant. Approach the
plant from the side to get minimum of dirt in the sample.
FOR
TREES AND LARGE BUSHES:
Use
the collecting cone which will give the maximum air flow without hurting the
foliage. Secure the cone with tension hooks. Two approaches are possible: place
the cone over the end of the branch as far as it will go or start higher up on
the branch and sweep down to the tip.
WHEN
SAMPLE IS COMPLETE:
Leave the motor
running! Slip one arm out of the strap and swing the motor to the ground
with other strap. Remove collecting bag, closing it as it is removed. Turn off
the motor (see motor instructions)
CARE
OF THE SAMPLE AFTER COLLECTING:
Sample
may be placed in an ice box to be taken to Berlesse funnel separators or it can
be screened using a Sieve Bag (402) To screen: place a second organdy bag in
collecting cylinder, followed by a mesh sieve bag. Add protective collar. Start
motor and empty the sample into the bags, agitating gently.
The separated sample may be placed in alcohol
by gathering up and inverting the bag into a jar in same manner that insects
are removed from a hand sweep net.
IT IS VERY IMPORTANT THAT THE FUEL BE
COMPLETELY FREE OF DIRT AND DUST!
D-VAC COMPANY
P.O.BOX 2506, VENTURA,CA 93002
USA TEL: (805) 643-5407 OR
(805)643-8541 FAX: (805)643-6267;
e-mail:
dvac@rinconvitova.com
D-VAC VACUUM INSECT SAMPLING MACHINE
WARNINGS
You
should understand that the previous engine was a 2-cycle that required special
oil to be added to the gasoline. Tecumseh engine company no longer makes this
engine. It was necessary to adapt a new engine to power the motor fan for D-Vac
model 24. A Briggs & Stratton engine was found that most closely meets the
needs of this insect sampling equipment.
This
new engine (Briggs and Stratton) is not a 2-cycle engine and oil is not mixed
with gasoline. There are separate places where oil and gasoline are added the
engine is shipped without oil or gasoline. Please read the instructions oil and
fuel recommendations in the manual!
The
D-Vac insect net is not authorized for use of this engine by the Briggs &
Stratton corporation. However, Fan Equipment Company of Las Vegas, NV assembles
these motor-fan backpack power systems. They have adapted this engine to fit
the needs of D-Vac Company.
See
safety precautions in manual form no. MS-3839-7/98.
Keep
this engine in an upright position when storing or in transport. Do not
transport engine with fuel in the tank or with fuel shut-off valve open.
Although the manual does not refer to this as a problem---it is probably a good
idea to keep the engine upright at all times so the oil remains in the bottom
of the oil pan and does not contact the rings of the piston.
See
storage in manual-over 30 days. Drain fuel to prevent gum from forming in fuel
system or carburetor parts. Store in an upright position as when checking the
oil level!