PICO 3232 - Irrigation timer MESTO - Free user manual and instructions

Product type	Backpack pressure sprayer
Brand	MESTO
Model	PICO 3232
Total capacity	6.5 liters
Max. fill quantity	5 liters
Max. spray pressure	3 bar
Max. operating temperature	30 °C
Empty weight	1.8 kg
Max. total weight	7.0 kg
Tank material	Polyethylene
Spray lance (3232)	Brass, length 40 cm
Spray lance (3232U)	Plastic, length 48 cm
Max. flow rate	1.0 l/min
Residual quantity	< 0.04 liter
Recoil force	< 5 N
Intended use	Spraying of plant protection products (herbicides, etc.)
Maintenance	Cleaning after each use, annual greasing of the piston cup and O-rings
Safety	Safety valve at 3 bar, piston pressure gauge, handle lock
Warranty	Up to 3 years (wear parts excluded)
Spare parts	Available from MESTO (seals, nozzles, piston cup, etc.)

Frequently Asked Questions - PICO 3232 MESTO

How to pressurize the device?

After filling the tank and screwing on the pump, unlock the piston rod by pushing it down and turning clockwise. Pump to the desired pressure (max 3 bar, red mark). Then lock the rod by pushing it down and turning clockwise.

What to do if pressure does not build up?

Check that the pump is properly screwed on. If the O-ring [17] or piston cup [18] is defective, replace them. Consult the fault table in the manual.

How to clean the sprayer after use?

Empty the tank, dilute the remainder twice with 1/2 liter of water and spray. Unscrew the pump, wipe the device with a damp cloth. Store tank and pump separately in a dry place, protected from sun and frost.

What types of liquids can I use?

The device is designed for plant protection products (herbicides, etc.) in the prescribed concentrations. Do not use flammable, corrosive liquids, solvents, paints, or liquids above 30°C.

How to maintain the pump?

Every year or after 50 uses, disassemble the pump, grease the piston cup [18] and O-rings [17] and [22] with suitable grease. Reassemble following the instructions.

What to do if the nozzle does not spray?

Check that the filter [20] and nozzle [13] are not clogged. Clean them with running water, possibly with a needle. Make sure that element [12] is present in the nozzle.

How to drain residual pressure?

Pull the red handle of the piston pressure gauge [14] upward until all gas escapes. Never open the pump under pressure.

Can I use the device for herbicides?

Yes, the HERBI 3232U model is specially designed for herbicides. Caution: after using herbicides, the device must not be used for other plant protection products.

How to transport the device?

Use the provided carrying strap. Ensure the device is depressurized and stable to avoid tipping. Do not expose it to sun or frost.

Where can I find spare parts?

Use only MESTO spare parts. Contact MESTO customer service or an authorized partner. The manual contains a parts diagram.

USER MANUAL PICO 3232 MESTO

Instructions for Use 13

F CH B NL CDN

Mode d'emploi 20

NL B

Illustration of a hand pressing down on a thermosupper with a numbered component (no text or symbols)

Illustration of a hand pressing down on a small container with a label '2' and number '7' (no text or symbols on the diagram itself)

D

A

CH

Welcome and congratulations

for purchasing your new MESTO sprayer. Thank you for the trust you have shown in our brand. Your satisfaction with MESTO products and services is very important for us.

Please contact us if your expectations are not met.

You will find our address on the title page of these instructions for use.

Make certain to read the instructions for use before using the device!

Keep the instructions for use in a safe place where they can be easily found.

Particular safety measures are required when working with the device.

Usage

Pressure spraying devices PICO 3232 and HERBI 3232U are designed for the spraying of plant protection products, including weed killers in the stipulated concentrations. HERBI 3232U has been specially developed for weed control (herbicides). Observe the manufacturer's instructions for using the product before each application. The spraying devices may be used outdoors or in well ventilated rooms only.

At the time of manufacture, there are no known harmful effects to the device caused by plant protection products approved by the BVL Federal Office.

Improper use may result in dangerous injuries and environmental damage.

You should only use other products if harmful effects on the device and endangerment of people and the environment can be excluded. Upon request, we will provide you with a list of active ingredients used in the sprayer.

Not suitable for

• Combustible liquids
• Corrosive substances (certain disinfecting and impregnating agents, acids and bases)
• Liquids at temperatures above 30 °C (104 °F)
• solvents and liquids containing solvents
- Viscous or sticky liquids or liquids that form residues (dyes, greases)
- Use in applications for foodstuffs.

Under no circumstances should you use

• external pressure sources without a MESTO compressed air valve
• for flaming
  • for storing and holding liquids
• as an eyewash.

Safety

Only trained, healthy and rested people may work with the device. You should not be under the influence of alcohol, drugs or medication. Children and adolescents must not use the device. Keep the spraying devices out of the reach of children.

Keep bystanders away during spraying. Take precautions to prevent hazardous substances from being misused.

Wear suitable protective clothing, goggles and respiratory protection when working with hazardous substances.

Never spray on people, animals, electrical devices and lines, into the wind, or into bodies of water.

Avoid ignition sources in the environment if you spray combustible liquids.

Do not leave the device in the sun. Ensure that the device is not heated beyond the maximum operating temperature ( Table 1). Protect the device from frost and ammonia.

Never blow through the nozzles or valves with your mouth.

There is a risk of slipping or tripping on smooth or wet surfaces, snow, ice, on slopes and on uneven terrain.

Repairs and modifications to the tank are not permitted.

Use only MESTO spare parts and accessories. We cannot assume any liability resulting from the use of third-party parts.

When pumping, always observe the pressure gauge to ensure that the recommended spraying pressure is maintained ( Table 1 below). After use and before maintenance work, depressurize the device.

Transport the devices in such a way that they are protected against damage and overturning.

GB

IRL

AUS

USA

NZ

CDN

IND

You will find the illustrations referred to in the text in the front fold-out pages 3 – 5 of these instructions for use.

Scope of delivery

Tank [1] with pump [2], hose [3], instructions for use [4], spray screen (3232U) [5], carrying strap [6], shut-off valve [7], spray wand (3232U) [8] or spray wand (3232) [9]. (Fig. 1)

Technical data

Type of device PICO 3232 HERBI	3232U
Max. filling amount 5 l (1.32 gal)
Total contents 6.5 l (1.72 gal)
Max. spraying pressure 3 bar
Max. operating temperature 30 °C (104 °F)
Weight when empty 1.8 kg (3.97 lb)	1.9 kg (4.18 lb)
Gross weight max. 6.5 kg (14 lb) 7.1 kg (15.65 lb)
Material of tank Polyethylene
Spray wand Brass 40 cm (17.75 in)	Plastic 48 cm (18.9 in)
Where device is carried on the side
Technical residual quantity < 0.04 l	(1.35 oz)
Max. volume flow	1.0 l/min (0.26 gal/min)
Recoil force	< 5 N

Table 1

Assembly

1. Fasten the carrying strap [6] on the tank [1]. (Fig. 2)
2. Push the tube [3] into the fixture [10] and secure it with the cap nut. (Fig. 3)
3. Push the hose [3] onto the shut-off valve [7] and secure it with the cap nut. (Fig. 3)
4. Screw the spray wand (3232) [9] or spray wand (3232U) [8] onto the shut-off valve [7]. (Fig. 3)
5. Mount the spray screen (3232U) [5] on the spray wand (3232U) [8], then sealing ring [11], insert [12] and nozzle [13]. (Fig. 3)

Checks

Visual inspection: Are the tank [1], pump [2], hose [3], shut-off valve [7] and spray wand [8] or [9] with nozzle [13] undamaged? (Figs. 1 and 3)

Pay special attention to the connections between the tank – hose and the hose – shut-off valve and to the condition of the pump threading and spray wand.

No leaks: Pump up the empty device to 2 bar (Fig. 10).

▶ The pressure must not decrease more than 0.5 bar within 30 minutes.

Function: Pull up the piston pressure gauge handle [14]. (Fig. 4)

▶ The pressure must dissipate.

Activate the shut-off valve [7] (Fig. 12)

▶ The shut-off valve must open and close..

Have damaged parts or parts that do not work properly repaired immediately by our customer service department or by service partners authorized by us.

Making preparations

Observe the instructions in the section entitled „Safety“.

The device must be in an upright position.

If filling the tank from a water line, ensure that the line or a hose does not project into the tank.

1. Pull up the red piston pressure gauge handle [14] until the tank is depressurized. (Fig. 4)
2. Unscrew the pump [2] from the tank. (Fig. 5)

We recommend you mix the spraying liquid in the device or premix it in an external tank: Fill to 1/3 with water, pour in the spraying agent, and then add more water until full.

If used for HERBICIDES, this spraying device should no longer be used for applying pesticides.

1. Add the spraying liquid to the tank [1] (Fig. 6)
2. Check the filling level with the scale [15] on the tank. (Fig. 6)
3. Screw the pump [2] into the tank. (Fig. 7)
4. Press the piston rod with handle [16] down and turn it clockwise.

The piston rod with handle is unlocked. (Fig. 8)

1. Create the desired pressure ( Table 2) in the tank (Fig. 9)

The maximum pressure should not exceed 3 bar (red line on the piston pressure gauge, Fig. 9). If the maximum pressure is exceeded, the safety valve will engage and release the excess pressure.

1. Press the piston rod with handle [16] down and turn it clockwise. (Fig. 10)

▶ Piston rod with handle is locked.

Spraying

Observe the instructions in the section entitled „Safety“.

Operate the device only while it is vertical or suspended upright and nearly vertical.

Avoid allowing drops of spray to drift onto areas that are not being treated.

Observe the instructions of the spray product manufacturer!

1. Hang the device over your shoulder. (Fig. 11)

To prevent dripping, hold the spray wand up when first spraying and activate the shut-off valve until no more liquid mixed with air is emerging from the nozzle.

1. Activate the shut-off valve [7] (Fig. 12)
   ▶ Spraying may now begin.
2. Make certain the optimum spraying pressure is set ( Table 2) on the piston pressure gauge [14] (Fig. 10).

Spraying pressure Spray quantity for hollow cone nozzle

1.5 bar 0.49 l/min (0.13 gal/min)

2.0 bar 0.56 l/min (0.15 gal/min)

3.0 bar 0.69 l/min (0.18 gal/min)

Table 2. Dependence: spraying rate and spraying pressure

1. If the spraying pressure decreases more than 0.5 bar from the optimum level, pump some more.

If liquid mixed with air emerges from the nozzle, the tank is empty.

After Usage

Observe the instructions in the section entitled „Safety“. Never leave spraying agent in the device.

1. Pull up the red piston pressure gauge handle [14] until the tank is depressurized. (Fig. 4)
2. Lock the piston rod with handle [16].
3. Unscrew the pump [2] from the tank. (Fig. 6)
4. Dilute the remaining quantity twice in a row with 1/2 liter of water each time and spray the resulting liquid onto the treated area.

Collect and dispose of the residual liquid according to all applicable laws, requirements and regulations. Observe the instructions of the spray product manufacturer!

1. Wipe off the spraying device with a moist cloth. (Fig. 14)

2. For drying and storing the device, keep the tank [1] and pump [2] separate in a dry place protected from sunlight and freezing temperatures (Fig. 14)

Clean the protective equipment and yourself every time after usage.

Care and maintenance

Observe the instructions in the section entitled „Safety“.

After using the device 50 times or at least once a year:

• Unscrew the pump [2] from the tank. (Fig. 6)
• Dismantle the pump [2].
  a) Unlock the piston rod with handle [16].
  b) Pull the piston rod with handle [16] out of the cylinder tube up to the stop and turn it counterclockwise (Fig. 13)
  c) Disconnect the piston rod with handle [16] and the cylinder tube [2]. (Fig. 13)

- Grease the diaphragm [18]. (Fig. 15)

- Assemble the pump.

a) Push the piston rod with handle [16] into the cylinder tube. (Fig. 16)
b) Hold the cylinder tube [2] and strongly press in the guiding plug [19] with your thumb. (Fig. 16)
c) Pull the piston rod with handle [16] up to the stop down and turn it clockwise (Fig. 16)

▶ The guiding plug [19] snaps in.

• Lock the piston rod with handle [16] and screw the pump [2] into the tank [1].
• Clean the nozzle [13] and insert [12] under flowing water. If necessary use a needle. (Fig. 17)
• Remove the filter [20] between the shut-off valve [7] and spray wand [8] or spray wand [9] and clean it under running water. (Fig. 18)
• Grease the O-rings [17] and [22] (Fig. 15 and/or 20)

Observe the legal requirements of your country for accident prevention and check the device in regular intervals.

If there are no special rules, we recommend you have the device examined externally by a competent professional every 2 years and subject it to an internal inspection every 5 years.

We would be happy to provide you with an inspection schedule in German or English.

Faults

Use only MESTO spare parts and accessories ( Fig. on page 2).

Fault Cause Remedy
No pressure builds up in the device	The pump is not screwed on tightly.	Screw the pump on tightly.
	O-ring [17] on the pump is faulty. (Fig. 15)	Replace the O-ring.
	Diaphragm [18] is defective. (Fig. 15)	Replace the diaphragm.
Liquid flows out of the pump	Valve disc [21] dirty or defective. (Fig. 19)	Clean or replace the valve disc.
No tank pressure indication on the piston pressure gauge, Safety valves blow off too early.	Piston pressure gauge [14] is defective	Have the piston pressure gauge repaired.
The nozzle does not spray even though pressure is present	Filter [20] (Fig. 18) and / or nozzle [13] (Fig. 17) is clogged.	Clean the filter or / and nozzle.
Only spray, no atomization	Insert [12] is missing (Fig. 17)	Position the insert in the nozzle
The shut-off valve does not close.	O-ring [22] of the pressure bolt [23] not greased / lubricated. (Fig. 20)	Grease the O-ring of the pressure bolt (dismantle or assemble the pump → section „Care and maintenance“)
Liquid emerges without the lever being activated.	Defective pressure bolt [23] or O-ring [22] (Fig. 20)	Replace the pressure bolt or O-ring.

Contact address for additional information → see title page.

Warranty

We guarantee that from the time it is first purchased for a period of the legally valid required warranty period (maximum 3 years) this device will not exhibit any material or processing errors. If defects are discovered during the warranty period, MESTO or the distributor in your country will repair the device without charging for the labor or material or (at the discretion of MESTO) replace the device itself or its defective parts.

If such defects are discovered, please contact us immediately. We require the invoice or cash register receipt for purchase of the device.

The warranty does not include wearing parts (seals, O-rings, diaphragm, etc.) or defects, which have occurred due to improper use or unforeseeable circumstances.

DECLARATION OF CONFORMITY

according to EC Machinery Directive 2006/42/EC, Appendix II, No. 1A.

We,

declare under our sole responsibility that the products pressure spraying devices of the series 3232 from factory number 1201 in the version supplied comply with all relevant provisions of the Directive 2006/42/EC.

Mr. Rolf Rehkugler is authorized to compile the technical documentation.

- Managing Director –

Toutes nos félicitations

- Director general –

Congratulazioni