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

 

 

 

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 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

D401

each

10.00

Medium mesh sieve bag

replacement bag

D402

each

6.50

Optional Accessories

 

 

 

 

 

Collecting unit 13.5 in. dia cylinder

 

 

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

D302

each

79.00

Collecting cone ft2 opening

 

D303

each

34.00

Collecting cone 1/3 ft2 opening

 

D304

each

34.00

Collecting cone 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!