DOLMAR AT-1827H Cordless String Trimmer Instruction Manual

DOLMAR AT-1827H Cordless String Trimmer Instruction Manual

Explanation of general view

1. Indication lamp
2. Switch trigger
3. Battery cartridge
4. Front grip
5. Clamping nut
6. Lock grip
7. Guard
8. Nylon cutting head
9. Red indicator
10. Button
11. Star marking
12. Lock-off button
13. Shaft
14. Grip
15. Hex bolt
16. Screws
17. Cutter cover
18. Nylon cord eyehole
19. Notch of the nylon cutting head installation port
20. Spring
21. Spool holder
22. Nylon cord
23. Retainer for nylon cord end
24. Spool
25. Shoulder strap
26. Hook
27. Motor housing
28. Lock button

SPECIFICATIONS

• Model AT-1827H
• No load speed 7,800 min-1
• Overall length 1,229 mm – 1,433 mm
• Cutting diameter with nylon cutting head 260 mm
• Net weight 2.9 kg 3.1 kg
• Rated voltage D.C. 18 V
• Standard battery cartridge(s)
  Warning: Use only the battery cartridge(s) described. AP-181/AP-1815-AP-183

Due to our continuing program of research and development, the specifications herein are subject to change without notice.
Specifications and battery cartridge may differ from country to country.
Weight, with battery cartridge, according to EPTA-Procedure 01/2003

Symbols

The following show the symbols used for the equipment. Be sure that you understand their meaning before use.

• Take particular care and attention
• Read instruction manual.
• Danger; be aware of thrown objects.
• The distance between the tool and bystanders must be at least 15 m.
• Keep bystanders away.
• Keep distance at least 15 m.
• Avoid kickback.
• Wear a helmet, goggles and ear protection.
• Wear protective gloves.
• Wear sturdy boots with nonslip soles. Steeltoed safety boots are recommended
• Do not expose to moisture.
• Top permissible tool speed.
• Only for EU countries Do not dispose of electric equipment or battery pack together with household waste material! In observance of European Directive 2012/19/EU on waste electric and electronic equipment, 2006/66/EC on batteries and accumulators and waste batteries and accumulators and their implementation in accordance with national laws, electric equipment and battery pack that have reached the end of their life must be collected separately and returned to an environmentally compatible recycling facility.

IMPORTANT SAFETY INSTRUCTIONS

WARNING! Read all safety warnings and all instructions. Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

Save all warnings and instructions for future reference.

1. Be familiar with the controls and proper use of the equipment.
2. Cutting elements continue to rotate after the motor is switched off.
3. Never allow children or people unfamiliar with the instructions to use the machine.
4. Stop using the machine while people, especially children, or pets are nearby.
5. Only use the machine in daylight or good artificial light.
6. Before using the machine and after any impact, check for signs of wear or damage and repair as necessary.
7. Take care against injury from any device fitted for trimming the filament line length. After extending new cutter line always return the machine to its normal operating position before switching on.
8. Never fit metal cutting elements.
9. This appliance is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.
10. Use the tool with the utmost care and attention.
11. Operate the tool only if you are in good physical condition. Perform all work calmly and carefully. Use common sense and keep in mind that the operator or user is responsible for accidents or hazards occurring to other people or their property.
12. Never operate the tool when tired, feeling ill or under the influence of alcohol or drugs.
13. The tool should be switched off immediately if it shows any signs of unusual operation.

Intended use of the tool

Use right tool. The cordless string trimmer is only intended for cutting grass, light weeds. It should not be used for any other purpose such as hedge cutting as this may cause injury.

Personal protective equipment (Fig. 1 & 2) 

1. Dress Properly. The clothing worn should be functional and appropriate, i.e. it should be tight fitting but not cause hindrance. Do not wear either jewelry or clothing which could become entangled with high grass. Wear protective hair covering to contain long hair.
2. When using the tool, always wear sturdy shoes with a non-slip sole. This protects against injuries and ensures a good footing.
3. Wear protective glasses or goggles.

Electrical and battery safety

1. Avoid dangerous environment. Don’t use the tool in damp or wet locations or expose it to rain. Water entering the tool will increase the risk of electric shock.
2. Recharge only with the charger specified by the manufacturer. A charger that is suitable for one type of battery pack may create a risk of fire when used with another battery pack.
3. Use power tools only with specifically designated battery packs. Use of any other battery packs may create a risk of injury and fire.
4. Do not dispose of the battery(ies) in a fire. The cell may explode. Check with local codes for possible special disposal instructions.
5. Do not open or mutilate the battery(ies). Released electrolyte is corrosive and may cause damage to the eyes or skin. It may be toxic if swallowed.

Starting up the tool (Fig. 3)

1. Make sure that there are no children or other people within a working range of 15 meters (50 ft), also pay attention to any animals in the working vicinity. Otherwise stop using the tool.
2. Before use always check that the tool is safe for operation. Check the security of the cutting tool and the guard and the switch trigger/lever for easy and proper action. Check for clean and dry handles and test the on/off function of the switch.
3. Check damaged parts before further use of the tool. A guard or other part that is damaged should be carefully checked to determine that it will operate properly and perform its intended function. Check for alignment of moving parts, binding of moving parts, breakage of parts, mounting, and any other condition that may affect its operation. A guard or other part that is damaged should be properly repaired or replaced by our authorized service center unless indicated elsewhere in this manual.
4. Switch on the motor only when hands and feet are away from the cutting tool.
5. Before starting make sure that the cutting tool has no contact with hard objects such as branches, stones etc. as the cutting tool will revolve when starting.

Method of operation

1. Never operate the machine with damaged guards or without the guards in place.
2. Only use the tool in good light and visibility. During the winter season beware of slippery or wet areas, ice and snow (risk of slipping). Always ensure a safe footing.
3. Take care against injury to feet and hands from the cutting tool.
4. Keep hands and feet away from the cutting means at all times and especially when switching on the motor.
5. Never cut above waist height.
6. Never stand on a ladder and run the tool.
7. Never work on unstable surfaces.
8. Don’t overreach. Keep proper footing and balance at all times.
9. Remove sand, stones, nails etc. found within the working range. Foreign particles may damage the cutting tool and can cause to o be thrown away, resulting in a serious injury.
10. Should the cutting tool hit stones or other hard objects, immediately switch off the motor and inspect the cutting tool.
11. Before commencing cutting, the cutting tool must have reached full working speed.
12. During operation always hold the tool with both hands. Never hold the tool with one hand during use. Always ensure a safe footing.
13.  All protective equipment such as guards supplied with the tool must be used during operation.
14. Except in case of emergency, never drop or cast the tool to the ground or this may severely damage the tool.
15. Never drag the tool on the ground when moving from place to place, the tool may become damaged if moved in this manner.
16.  Always remove the battery cartridge from the tool:
    • whenever leaving the tool unattended;
    • before clearing a blockage;
    • before checking, cleaning or working on the tool;
    • before making any adjustments, changing accessories or storing;
    • whenever the tool starts vibrating unusually;
    • whenever transporting the tool.
17. Don’t force the tool. It will do the job better and with less likelihood of a risk of injury at the rate for which it was designed.

Maintenance instructions

1. The condition of the cutting tool, protective devices must be checked before commencing work.
2. Turn off the motor and remove the battery cartridge before carrying out maintenance, replacing the cutting tool and cleaning the tool.
3. After use, disconnect the battery cartridge from the tool and check for damage.
4. Check for loose fasteners and damaged parts such as nearly halfway cut-off state in the cutting tool.
5. When not in use store the equipment in a dry location that is locked up or out of children’s reach.
6. Use only the manufacturer’s recommended replacement parts and accessories.
7. Always ensure that ventilation openings are kept clear of debris.
8. Inspect and maintain the tool regularly, especially before/after use. Have the tool repaired only by our authorized service center.
9. Keep handles dry, clean and free from oil and grease.

SAVE THESE INSTRUCTIONS.

WARNING:
DO NOT let comfort or familiarity with product (gained from repeated use) replace strict adherence to safety rules for the subject product. MISUSE or failure to follow the safety rules stated in this instruction manual may cause serious personal injury.

FOR BATTERY CARTRIDGE

1. Before using battery cartridge, read all instructions and cautionary markings on (1) battery charger, (2) battery, and (3) product using battery.

2. Do not disassemble battery cartridge.

3. If operating time has become excessively shorter, stop operating immediately. It may result in a risk of overheating, possible burns and even an explosion.

4. If electrolyte gets into your eyes, rinse them out with clear water and seek medical attention right away. It may result in loss of your eyesight.

5. Do not short the battery cartridge:

6.  Do not touch the terminals with any conductive material.

7. Avoid storing battery cartridge in a container with other metal objects such as nails, coins, etc.

8. Do not expose battery cartridge to water or rain.
   A battery short can cause a large current flow, overheating, possible burns and even a breakdown.

9. Do not store the tool and battery cartridge in locations where the temperature may reach or exceed 50°C (122°F).

10. Do not incinerate the battery cartridge even if it is severely damaged or is completely worn out. The battery cartridge can explode in a fire.

11. Be careful not to drop or strike battery.

12. Do not use a damaged battery.

SAVE THESE INSTRUCTIONS.

Tips for maintaining maximum battery life

1. Charge the battery cartridge before completely discharged. Always stop tool operation and charge the battery cartridge when you notice less tool power.
2. Never recharge a fully charged battery cartridge. Overcharging shortens the battery service life.
3.  Charge the battery cartridge with room temperature at 10°C – 40°C (50°F – 104°F). Let a hot battery cartridge cool down before charging it.
4. Charge the battery cartridge once in every six months if you do not use it for a long period of time.

PARTS DESCRIPTION

(Fig. 4)

FUNCTIONAL DESCRIPTION

WARNING

• Always be sure that the tool is switched off and battery cartridge is removed before adjusting or checking function on the tool. Failure to switch off and remove the battery cartridge may result in serious personal injury from accidental start-up.

Installing or removing battery cartridge

(Fig. 5)

CAUTION

• Always switch off the tool before installing or removing of the battery cartridge.
• Hold the tool and the battery cartridge firmly when installing or removing battery cartridge. Failure to hold the tool and the battery cartridge firmly may cause them to slip off your hands and result in damage to the tool and battery cartridge and a personal injury.

To remove the battery cartridge, slide it from the tool while sliding the button on the front of the cartridge. To install the battery cartridge, align the tongue on the battery cartridge with the groove in the housing and slip it into place. Insert it all the way until it locks in place with a little click. If you can see the red indicator on the upper side of the button, it is not locked completely.

CAUTION

• Always install the battery cartridge fully until the red indicator cannot be seen. If not, it may accidentally fall out of the tool, causing injury to you or someone around you.
• Do not install the battery cartridge forcibly. If the cartridge does not slide in easily, it is not being inserted correctly.

Battery protection system (Lithium-ion battery with star marking)

(Fig. 6)

Lithium-ion batteries with a star marking are equipped with a protection system. This system automatically cuts off power to the tool to extend battery life. The tool will automatically stop during operation if the tool and/or battery are placed under one of the following conditions:

• Overloaded:
  The tool is operated in a manner that causes it to draw an abnormally high current.
  In this situation, release the switch trigger on the tool and stop the application that caused the tool to become overloaded. Then pull the switch trigger again to restart.
  If the tool does not start, the battery is overheated. In this situation, let the battery cool before pulling the switch trigger again.

• Low battery voltage:
  The remaining battery capacity is too low and the tool will not operate. In this situation, remove and recharge the battery.

Power switch action

WARNING

• Before inserting the battery cartridge in the tool, always check to see that the switch trigger actuates properly and returns to the “OFF” position when released. Do not pull the switch trigger hard without pressing in the lock-off button. This can cause switch breakage. Operating a tool with a switch that does not actuate properly can lead to loss of control and serious personal injury.

To prevent the switch trigger from being accidentally pulled, a lock-off button is provided.
To start the tool, move the lock-off button forward and pull the switch trigger. Release the switch trigger to stop. (Fig. 7)

Indication lamp (Fig. 8)

Running the tool allows the indication lamp to show the battery cartridge capacity status.
When the tool is also overloaded and has stopped during operation, the lamp lights up in red.
Refer to the following table for the status and action to be taken for the indication lamp.

cartridge as soon as possible.
The lamp lights up in red. (Note 1)| This function works when the battery power is almost used up. At this time, tool stops immediately.| Recharge the battery cartridge.
The lamp lights up in red. (Note 1)| Autostop due to overload.| Turn off the tool.

Note 1: The time at which the indication lamp lights up varies by the temperature around the work area and the battery cartridge conditions.

Adjusting the shaft length

WARNING

Before adjusting the shaft length, release the switch trigger and remove the battery cartridge from the string trimmer. Failure to release the trigger and removing the battery cartridge may cause a personal injury.

To adjust the length of the shaft, turn the grip counterclockwise until the shaft is unlocked and pull out or push in to the desired length. (Fig. 9)

Nylon cutting head

NOTICE:

• The bump feed will not operate properly if the nylon cutting head is not rotating.
  The nylon cutting head is a single string trimmer head provided with a bump & feed mechanism. To cause the nylon cord to feed out, the cutting head should be bumped against the ground while the tool is running. As the nylon cord is feeding out it will automatically be cut to the proper length by the cutter on the guard. (Fig. 10)
  

NOTE

• If the nylon cord does not feed out while bumping the head, rewind/replace the nylon cord by following the procedures described under “Installing or removing the nylon cutting head” and “Winding a new nylon cord on the spool.”
• Do not bump the tool to the concrete or asphalt surface. Bumping to this kind of objects may cause the tool damage.

ASSEMBLY

WARNING

• Always be sure that the tool is switched off and battery cartridge is removed before carrying out any work on the tool. Failure to switch off and remove the battery cartridge may result in serious personal injury from accidental start-up.
• Never start the tool unless it is completely assembled. Operation of the tool in a partially assembled state may result in serious personal injury from accidental start-up.

Installing the front grip (Fig. 11)

Put the front grip on the front grip holder and secure it with a hex bolt and the clamping nut provided with the string trimmer as shown in the figure. At this time, the hex bolt needs to be installed from the side in which the hex bolt lock port is located and the clamping nut needs to be installed from the opposite side.

NOTE

• The front grip has a edge-to-edge cut slit in its mounting area. Using this slit allows you to easily install the front grip on the front grip holder.
  The front grip angle is adjustable. To adjust the front grip angle, loosen the claming nut, set the front grip at an proper angle according to your work and then tighten the nut clockwise firmly

Installing the guard

CAUTION

While installing the guard, be careful not to contact the nylon cord cutter provided on the guard.
Contact with the cutter could result in personal injury. Mount the guard by fitting it on to the motor housing so that the nylon cord is not pinched between the guard and the motor housing, and then secure it with two screws. Before starting the trimmer, take away the cutter cover from the cord cutter. (Fig. 12)

Installing or removing the nylon cutting head

WARNING

• Before installing or removing the nylon cutting head (both spool cover and spool, and hereafter called this way), make sure that the tool is switched off and the battery cartridge is removed from the tool. Failure to switch off the tool and remove the battery cartridge may cause a personal injury.

CAUTION

While installing or removing the nylon cutting head, be careful not to contact the nylon cord cutter provided on the guard. Contact with the cutter could result in personal injury.
To remove the nylon cutting head (spool and spool cover) from the string trimmer, press in the latches forcefully on both sides of the spool cover and raise it. (Fig. 13 & 14)

NOTICE

Make sure that the spring is installed inside the spool holder

To install a cord-newly-wound nylon cutting head (spool and spool cover) on the string trimmer, align the nylon cord eyehole with the notch of the nylon cutting head installation port on the trimmer and then press in it until a click is heard. (Fig. 15)

Winding a new nylon cord on the spool

Remove the spool from the spool cover and take off the remaining used nylon cord from the spool. (Fig. 16) Insert a nylon cord to the retainer shown in the figure. (Fig. 17)

Wind it tightly flat around the spool in the direction of arrow on the spool so that the wound nylon cord surface appears uniform over the winding area. (Fig. 18) Temporarily fix a nylon cord at the notch shown in the figure. (Fig. 19)

Bring the nylon cord through the nylon cord eyehole in the spool cover. (Fig. 20)

After installing the nylon cutting head, make sure that the nylon cord comes out by pressing the spool and pulling the nylon cord. (Fig. 21)

OPERATION

Attachment of shoulder strap (Fig. 22)

Hook the shoulder strap in a hole in the front grip.

Operation

CAUTION

• Do not cut high grass at a time. Cutting high grass at a time near the root may cause the trimmer motor spindle to be entangled by grass which leads to the motor under overload, resulting in damage to the trimmer.

CAUTION

Use the trimmer without getting the spool into a contact with the ground surface. Using the spool contacting the ground surface may cause the motor under overload resulting in damage to the trimmer. (Fig. 23 & 24)

CAUTION

Do not force the trimmer in densely growing grass. (Fig. 25)

CAUTION

Do not use the trimmer as if you dig out the ground with it. (Fig. 26)

Cutting the grass near a tree, concrete block, brick or garden stone (Fig. 27)

Hold the trimmer tilting at a level so that it does not contact the ground surface and cut the grass using the nylon cord tip like knocking the ground. In this work, smooth feeding out is needed because the nylon cord wears more quickly than usual.

NOTE

Getting the trimmer too close to a tree, concrete block, brick or garden stone or the like during performing the edging work or such similar cutting work may cause the nylon cord to be cut off halfway inside the spool cover. At this time, take the spool out of the spool cover and then set the nylon cord again properly by referring to the section titled “Installing or removing the nylon cutting head” and “Winding a new nylon cord on the spool”. Using the tip of the nylon cord during operation brings the best result of operation and therefore it is recommended to keep the tool more than 5 cm away from the tree, concrete block, brick or garden stone or the like.

Start the trimmer before getting close to the grass to be cut.
Cut the grass using the nylon cord tip by moving the trimmer from right to left and proceed slowly, keeping the trimmer tilted at the angle of about 30° in relation to the ground surface.
When cutting high grass, cut in layers always beginning from the top with each cut length short.

Using the tool as an edger

Using the tool as an edger allows the operator to cut along the edge of the concrete block, brick and the like. (Fig. 28) For using the tool as an edger, hold the shaft of the trimmer with one hand and turn the grip counter clockwise to loosen the shaft. Rotate the shaft with the motor housing 180° and tighten the grip clockwise until it locks. (Fig. 29)

NOTE

• Before rotating the shaft, it needs to be fully shortened or extended.
• After changing to the edger position, make sure that the motor housing and shaft are locked.

To obtain a good result of finish cutting, move parallel to the edge you are going to perform an edging work. (Fig. 30)

Cutting the grass in a tight place or on a slope

WARNING

• When cutting the grass on a slope, be careful of stones, grass and other foreign objects thrown from the cutting head area.
• When cutting the grass on a slope, make sure that you always keep a good and stable footing.

To ease the work in a tight place which restricts the height, such as cutting the grass under an outdoor wood deck and similars, push the lock button and then bend down the cutting head so that the shaft is parallel to the ground surface. Adjusting the cutting head angle properly in this way helps you cut the grass on a slope. (Fig. 31)

MAINTENANCE

WARNING

Always be sure that the tool is switched off and battery cartridge is removed before attempting to perform inspection or maintenance on the tool. Failure to switch off and remove the battery cartridge may result in serious personal injury from accidental start-up.

NOTICE

Never use gasoline, benzine, thinner, alcohol or the like. Discoloration, deformation or cracks may result. To maintain product SAFETY and RELIABILITY, repairs, any other maintenance or adjustment should be performed by Dolmar Authorized Service Centers, always using Dolmar replacement parts.

OPTIONAL ACCESSORIES

CAUTION

These accessories or attachments are recommended for use with your Dolmar tool specified in this manual. The use of any other accessories or attachments might present a risk of injury to persons. Only use accessory or attachment for its stated purpose.

If you need any assistance for more details regarding these accessories, ask your local Dolmar Service Center.

• Nylon cutting head
• Nylon cords
• Shoulder strap
• Goggles
• Various type of Dolmar genuine batteries and chargers

NOTE

Some items in the list may be included in the tool package as standard accessories. They may differ from country to country.

Noise

The typical A-weighted noise level determined according to EN786:

Sound pressure level (LpA): 82 dB (A)
Sound power level (LWA): 88.5 dB (A)
Uncertainty (K): 2.5 dB (A)
Wear ear protection.

Vibration

The vibration emission value determined according to EN786:
Vibration emission (ah ): 2.5 m/s2 or less
Uncertainty (K): 1.5 m/s2

• The declared vibration emission value has been measured in accordance with the standard test method and may be used for comparing one tool with another.
• The declared vibration emission value may also be used in a preliminary assessment of exposure.

WARNING

• The vibration emission during actual use of the power tool can differ from the declared emission value depending on the ways in which the tool is used.
• Be sure to identify safety measures to protect the operator that are based on an estimation of exposure in the actual conditions of use (taking account of all parts of the operating cycle such as the times when the tool is switched off and when it is running idle in addition to the trigger time).

For European countries only
EC Declaration of Conformity
The undersigned, Tamiro Kishima and Rainer Bergfeld, as authorized by Dolmar GmbH, declare that the DOLMAR machine(s):

Designation of Machine:
Cordless String Trimmer
Model No./ Type: AT-1827H
Specifications: see “SPECIFICATIONS” table are of series production and

Conforms to the following European Directives: 2000/14/EC, 2006/42/EC

And are manufactured in accordance with the following standards or standardised documents:

EN60745, EN60335

The technical documentation is on file at: Dolmar GmbH,
Jenfelder Straße 38, Abteilung FZ,
D-22045 Hamburg

The conformity assessment procedure required by Directive 2000/14/EC was in Accordance with annex VI. Notified Body: TÜV Rheinland LGA Products GmbH Tillystraße 2 90431 Nürnberg, Germany
Identification number 0197

Measured Sound Power Level: 88.5 dB (A)
Guaranteed Sound Power Level: 91 dB (A)

23.9.2011

Tamiro Kishima
Managing Director

**Rainer Bergfeld
Managing Director

**

DOLMAR GmbH
Postfach 70 04 20
D-22004 Hamburg
Germany
http://www.dolmar.com

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