Andermatt BioVet VARROX Gebruiksaanwijzing - Pagina 5

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1. Appliance

The VARROX

-Vaporiser consists of a heater, a metallic-

support and 3 m of cable with 2 battery-clips. It has an

output of 150 W. The power source can be an accumu-

lator (car battery, 12 volt, 12 ampere, capacity > 40 Ah).

2. Mode of action

Oxalic acid dihydrate is added to the pan, then the ap-

pliance is inserted through the entrance of the hive. As a

result of the heating action of the pan, the oxalic acid lique-

fies and vaporises. Oxalic acid vapour fills the hive and all

the bees and surfaces are then covered with a very thin la-

yer of oxalic acid crystals. These fine crystals are tolerated

well by the bees, but have a deadly effect on varroa mites.

3. Treatment

3.1 Time

The use of the VARROX

-Vaporiser is particularly suita-

ble for the follow up treatment in broodless colonies (see

5. Concept of control).

The treatment should not be made during heavy bee flight.

The temperature should not be below + 4 °C. Especial-

ly in honeydew areas the last cleansing flight should not

date back more than four weeks. A cleansing flight should

then be awaited.

3.2 Dosage

Oxalic acid-

Measuring

Type hof hive

dihydrate

spoon*

One-chanber-hive

1 g

(warm way, one-storey)

Two-chamber-hive

2 g

(two-storey/Dadant)

*One spoon filled loose and without pressing, corresponds to

one gram Oxalic acid-dihydrate. Each VARROX

-Vaporiser

is supplied with a measuring spoon.

3.3 Placing the VARROX

-Vaporiser

The appropriate amount of oxalic acid-dihydrate is placed

into the VARROX

-Vaporiser. Afterwards, the appliance

is inserted through the entrance of the hive right below

the cluster of the bees until the metallic support is fully

inside. It must not be used at close range of wax or bees

(minimum distance 2 cm).

If the insertion through the entrance is not possible becau-

se of the construction of the hive, use the opening of the

diagnosis drawer where possible.

Attention: The VARROX

-Vaporiser reaches temperatures

of up to 400°C. It can create patches of heat on the hive

bottom and frames if used for too long or too close to

the hive. This can be avoided by using a sheet metal or

wooden board below the pan.

Caution with synthetic hives and plastified varroa

screens: With hives or varroa screens made of synthetic

material, an isolation platter (minimum 4 mm thick) must

be put under the appliance.

Hint: Depending on the height of the entrance and the

bottom of the hive, we recommend that the VARROX

Vaporiser is fitted in evenly by bending down both sides

of the metallic support a few millimetres. The distance

between the bottom of the hive and the heating element

can be increased and the source of the heat is taken off

the bottom.

3.4 Sealing up the hive

Seal the whole entrance (or diagnosis drawer) around the

handle of the VARROX

-Vaporiser using strips of foam or

cloth. Open floors or other openings should be shut tightly

over the whole surface.

3.5 Duration of the treatment

After the hive is sealed up, the vaporiser should be con-

nected to a car battery (12 V) for 2

minutes.

1/2

One of the battery-clips of the cable can be constantly

connected with the source of power using the contact

of the second clip to switch the appliance on and off. It

makes no difference which clip is connected to the plus-

terminal - the function of the heating is not reduced.

After disconnecting the VARROX

-Vaporiser, wait for 2

minutes before the appliance is pulled out, so that the

oxalic acid-vapour can settle. Once removed, ensure that

the entrance of the hive is shut tightly again and is left

shut for another 10 minutes.

After taking out the VARROX

-Vaporiser, it should be

cooled in a bucket of water, so that with the next use, no

vaporisation begins before the appliance is inserted into

the hive.

4. Oxalic acid-dihydrate (Oxalic acid-crystals)

Oxalic acid is an unhealthy, toxic and corrosive substance.

When filling the VARROX

-Vaporiser and during the treat-

ment, it is absolutely necessary to wear protective glasses,

a protective mask FFP3, gloves and long-sleeved clothes.

4.1 Purchase of oxalic acid-dihydrate

For the treatment, oxalic acid-dihydrate (C2H2O4 x 2

H2O) CAS-No. 6153-56-6, EG-No. 205-634-3 has to

be used.

Normally available in pharmacies.

4.2 Purchase of oxalic acid-dihydrate/Handling of

oxalic acid

Oxalic acid can cause damage to health with both skin

contact and if swallowed. Avoid contact with eyes and

skin. Vapours and dusts of the oxalic acid should not be

inhaled. Keep oxalic acid out of the reach of children.

Oxalic acid must be stored in its original container (with

law-concurring labelling) in a safe place. In the case of

eye contact, immediately wash the acid out with water. If

ingested consult a physician immediately.

Working safety during and after the treatment

• With treatments of apiaries in the open, take care that

the wind blows any escaping oxalic acid away from

the user. The whole length of the cable should be used

and the user should stay away from the hive.

• The foam material used for sealing the hive must be

handled with gloves. This avoids contact with the acid

where it may have condensed on the inner side of

the foam. The foam material must be washed out

carefully with water before putting away.

• Treatments on colonies in a beehouse must only be

made from outside through the entrances of the hi-

ves. During the treatment, the beehouse must be well

ventilated. No person must be inside the beehouse.

• The VARROX

-Vaporiser is a powerful heater that ge-

nerates high temperatures. The vaporiser must not be

used near easily flammable materials. Always put the

vaporiser on a sheet of non-flammable material (i.e.

metal). Never touch the metallic part of the vaporiser

when in use. Caution: metallic parts may be hot for

a long time after use. The vaporiser must never be

switched on without supervision.

• After the treatment in the winter, oxalic acid-crystals

are found on the bottom of the hive. This can be due

to the absence of bee cleaning activity as found in

the summer. Caution is therefore needed if mite fall is

controlled after a treatment in the winter. Gloves and

a protective mask should be worn. The rest of the oxa-

lic acid will break down to water and carbon dioxide

and will be cleaned by the bees in spring.

5. Concept of control

Do not treat colonies with honey supers on.

5.1 Treatment in brood free colonies

The VARROX

-Vaporiser can be used in broodless colo-

nies. With the VARROX

-Vaporiser a very good efficacy

of > 96 % can be reached and thus it can decimate the

varroa-mite-population reliably to a very low level. The-

reby, optimal conditions for the new season are created

for the bees.

If there is a mite fall of more than 1000 varroa mites

caused by the treatment, or if it is uncertain whether there

was brood in the colonies, a second treatment is recom-

mended. The optimal time for it, is two weeks after the first

treatment. If a second treatment is necessary only 1 gram

of oxalic acid has to be used, independent on the size of

the hive. Two or more treatments are very well tolerated

by the bees.

5.2 Treatment of swarms / artificial swarms

Swarms and artificial swarms can be treated at any time.

5.3 Treatment of nucleus

Treatment of queenright nuclei should be carried out be-

fore the first brood is sealed, if possible. (No efficacy in

sealed brood).

Attention: Queenless colonies react very conspicuously to

the treatment with an increased activity in the hive and by

leaving the hive.

6. Accessories

(to order separately)

• Protective mask FFP3 (Acid / Gas respirator)

• Timer

• Gloves

• Glasses

7. Electrical supply

The VARROX

-vaporiser must be operated with 12 volts,

12 ampere and cannot be directly plugged into a socket

of 110 V or 220 V. It runs on alternating and direct cur-

rent (AC/DC). The following can be used as a source of

power:

• Car accumulator minimum 40 Ah (the accumula-

tor and battery charger can be bought in DIY super

stores)

• With a transformer (12 V, 12 A)

If the vaporiser is connected to the car accumulator for

prolonged periods the engine of the car may have to be

run to avoid draining the battery.

8. Source of troubles

• After the treatment there is still some acid left in the-

pan

• Heating time is too short: Heat longer (plus

about 1/2 minutes)!

• Accumulator is weak and delivers not enough

current: Charge accumulator!

• Possible burr-comb below the frames, has to be re-

moved, so that it is not in the way of the VARROX

vaporiser or too close.

• The treatment should only be used in hives normally

occupied with bees. Very small colonies or even

empty hives should not be treated.

9. Warranty

Please, follow the instructions for use carefully. We do not

assume any warranty for incorrect application, reasons

of unsatisfactory efficacy or possible damages that are

beyond the control of Andermatt BioVet AG.