Zenit Powertools RH-950 User manual

InstructIon manual
rotary hammer
rh-950

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GENERAL SAFETY PRECAUTIONS
WARNING! When using electric tools, basic safety precautions should always
be followed to reduce the risk of re, electric shock and personal injury, including the
following.
Read all these instructions before operating this product and save these instructions.
For safe operations:
1. Keep work area clean. Cluttered areas and benches invite injuries.
2. Consider work area environment. Do not expose power tools to rain. Do not use
power tools in damp or wet locations. Keep work area well lit. Do not use power tools
where there is risk to cause re or explosion.
3. Guard against electric shock. Avoid body contact with earthed or grounded surfaces.
(e.g. pipes, radiators, ranges, refrigerators).
4. Keep children and inrm persons away. Do not let visitors touch the tool or extension
cord. All visitors should be kept away from work area.
5. Store idle tools. When not in use, tools should be stored in a dry, high or locked up
place, out of reach of children and inrm persons.
6. Do not force the tool. It will do the job better and safer at the rate for which it was
intended.
7. Use the right tool. Do not force small tools or attachments to do the job of a heavy
duty tool. Do not use tools for purposes not intended.
8. Dress properly. Do not wear loose clothing or jewelry; they can be caught in moving
parts. Rubber gloves and non-skid footwear are recommended when working outdoors.
Wear protecting hair covering to contain long hair.
9. Use eye protection. Also use face or dust mask if the cutting operation is dusty.
10. Connect dust extraction equipment. If devices are provided for the connection of
dust extraction and collection facilities ensure these are connected and properly used.
11. Do not abuse the cord. Never carry the tool by the cord or yank it to disconnect it
from the receptacle. Keep the cord away from heat, oil and sharp edges.
12. Secure work. Use clamps or a vise to hold the work. It is safer than using your hand
and it frees both hands to operate tool.
13. Do not overreach. Keep proper footing and balance at all times.
14. Maintain tools with care. Keep cutting tools sharp and clean for better and safer
performance. Follow instructions for lubrication and changing accessories. Inspect tool
cords periodically and if damaged, have it repaired by authorized service center. Inspect
extension cords periodically and replace, if damaged. Keep handles dry, clean, and free
from oil and grease.
15. Disconnect tools. When not in use, before servicing, and when changing accessories
such as blades, bits and cutters.
16. Remove adjusting keys and wrenches. Form the habit of checking to see that keys
and adjusting wrenches are removed from the tool before turning it on.

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17. Avoid unintentional starting. Do not carry a plugged in tool with a nger on the
switch. Ensure switch is off when plugging in.
18. Use outdoor extension leads. When tool is used outdoors, use only extension cords
intended for outdoor use.
19. Stay alert. Watch what you are doing. Use common sense. Do not operate tool when
you are tired.
20. 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, free running of
moving parts, breakage of parts, mounting and any other conditions that may affect its
operation. A guard or other part that is damaged should be properly repaired or replaced
by an authorized service center unless otherwise indicated in this instruction manual.
Have defective switches replaced by an authorized service center. Do not use the tool if
the switch does not turn it on and off.
21. Warning Use only accessories or attachments recommended in this instruction man-
ual or in the catalogue of ZENIT ТМ.
22. Have your tool repaired by a qualied person. This electric tool is in accordance
with the relevant safety requirements. Repairs should only be carried out by qualied
persons using original ZENIT TM spare parts. Otherwise this may result in considerable
danger to the user.
Safety precautionS on uSing rotary hammer
1. Always wear ear protectors when using the tool for extended periods. Prolonged ex-
posure to high intensity noise can cause hearing loss.
2. Never touch the tool bit with bare hands after operation.
3. Before operation conrm whether hidden objects are present, such as electric cables
or water pipes within the wall, oor or ceiling.
4. Always attach the side handle and securely grip the rotary hammer.
5.Always securely grip the handle and the side handle of the rotary hammer. Otherwise
reaction force may lead to unsafe operation.
6. Always wear dust mask.
Never inhale dust from drilling.
DESCRIPTION

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1. «On\Off» switch
2. Stopper
3. Drilling mode switch
4. Side handle
5. Drill chuck
TECHNICAL SPECIFICATIONS
Model RH-950
Rated power 950 W
Rated voltage 220-240 V
Rated frequency 50-60 Hz
Drilling diameter: 2-24 mm
No load speed 0 – 1050 rpm
Impact range 0-5800 spm
STANDARD ACCESSORIES
Plastic case 1
Side handle 1
Depth gauge 1
Standard accessories are subject to change without notice.
applicationS
Rotation and hammering function
_ Drilling anchor holes
_ Drilling holes in concrete
_ Drilling holes in tile
Rotation only function
_ Drilling in steel or wood
_ Tightening screws
prior to operation
1. Power source.
Ensure that the power source to be utilized conforms to the power requirements speci-
ed on the product nameplate.
2. «On\Off» switch.
Ensure that the power switch is in the OFF position. If
the plug is connected to a receptacle while the power switch is in the ON position, the

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power tool will start operating immediately, inviting serious accident.
3. Extension cord.
When the work area is removed from the power source. Use an extension cord of
sufcient thickness and rated capacity. The extension cord should be kept as short as
practicable.
CAUTION
To prevent accidents, make sure to turn the switch off and disconnect the plug from
the receptacle.
NOTE
When using tools such as bull points, drill bits, etc., make sure to use the genuine
parts.
• Clean the shank portion of the drill bit.
• Insert the drill bit in a twisting manner into the tool holder until it latches itself.
• Check the latching by pulling on the drill bit.
• To remove the drill bit, fully pull the grip in the direction of the arrow and pull out
the drill bit.
When using a bit which has big diameter, enlarge the center hole of the dust cup with
this rotary hammer.
how to uSe
To prevent accidents, make sure to turn the switch off and disconnect the plug from
the receptacle when the drill pits and other various parts are installed or removed. The
power switch should also be turned off during a work break and after work.
1. Switch operation
The rotation speed of the drill bit can be controlled steplessly by varying the amount
that the trigger switch is pulled. Speed is low when the trigger switch is pulled slightly
and increases as the switch is pulled more. To turn the switch OFF, release the trigger
switch to its original position.
2. Rotation + Hammering
This rotary hammer can be set to rotation and hammering mode by pressing the push
button and turning the change lever.
• Mount the drill bit.
• Pull the trigger switch after applying the drill bit tip to the drilling position.
• Pushing the rotary hammer forcibly is not necessary at all. Pushing slightly so that
drill dust comes out gradually is just sufcient.
CAUTION
When the drill bit touches an iron reinforcing rod, the bit will stop immediately and
the rotary hammer will react to revolve. Therefore please grip the side handle and

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handle tightly.
3. Rotation only
This rotary hammer can be set to rotation only mode by pressing the push button and
turning the change lever. To drill a wood or metal material using the separately sold
drill chuck and chuck adaptor, proceed as follows.
Installing drill chuck and chuck adaptor:
drill chuck and chuck adaptordrill chuck and chuck adaptor
Attach the drill chuck to the chuck adaptor.
CAUTION
Application of force more than necessary will not only reducing drilling efciency at
all, but will deteriorate the tip edge of the drill bit and reduce the service life of the
rotary hammer in addition.
Drill bit may snap off while withdrawing the rotary hammer from the drilled hole. For
withdrawing, it is important to use a pushing motion.
_ Do not attempt to drill anchor holes or holes in concrete with the main unit in the
rotation only function.
_ Do not attempt to use the rotary hammer in the rotation and striking function with
the drill chuck and chuck adaptor attached. This would seriously shorten the service
life of every components of the machine.
4. Using depth gauge
• Loosen the knob on the side handle, and insert the depth gauge into the mounting
hole on the side handle.
• Adjust the depth gauge position
according to the depth of the hole and tighten the knob bolt securely.
5. How to use the drill bit (taper shank) and the taper shank adaptor
• Mount the taper shank adaptor to the rotary hammer.
• Mount the drill bit (taper shank) to the taper shank adaptor.
• Turn the switch ON, and drill a hole in prescribed depth.
• To remove the drill bit (taper shank), insert the cotter into the slot of the taper shank
adaptor and strike the head of the cotter with a hammer supporting on the rests.
How to replace grease
Low viscosity grease is applied to this rotary hammer so that it can be used for a
long period without replacing the grease. Please contact the nearest service center for
grease replacement when any grease is leaking from loosened screw. Further use of
the rotary hammer despite the grease shortage causes seizure to reduce the service life.
CAUTION
A specic grease is used with this machine, therefore, the normal performance of the

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machine may be badly affected by use of other grease. Please be sure to let one of our
service agents undertake replacement of the grease.
maintenance and inSpection
1. Inspecting the drill bits.
Since use of a dull tool will cause motor malfunctioning and degraded efciency,
replace the drill bit with a new one or resharpening without delay when abrasion is
noted.
2. Inspecting the screws
Regularly inspect all mounting screws and ensure that they are properly tightened.
Should any of the screws be loose, retighten them immediately. Failure to do so could
result in serious hazard.
• Maintenance of the motor.
The motor unit winding is the very “heart” of the power tool. Exercise due care to
ensure the winding does not become damaged and/or wet with oil or water.
CAUTION
When using the drill follow these rules:
• continuous use of the drill should not exceed 15 minutes;
• do not allow mechanic damage (strikes, falls etc.);
• protect the drill from external sources of heat and chemically active substances, as
well as liquid and objects penetration;
• provide effective cooling and drilling wastes withdrawal from the tool working zone;
• before disconnecting the tool from the power source turn off the On/Off switch;
• check the engine temperature, do not allow overheating;
• change the rotation direction only after switching off the tool and complete stop of
rotating parts;
• do not use bits not intended for concrete and brick drilling in impact mode.
Inobservance of these rules will make warranty void!
WARNING
Repair, modication and check of ZENIT power tools should be performed only in
authorized service centers ZENIT. While use or maintenance of power tools follow all
safety rules and standards.
NOTE
Zenit Power Tools are constantly being improved and modied to incorporate the lat-
est technological advancements.
Accordingly, some parts may be changed without prior notice.

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Demix LLC
Head ofce:
14, Shevchenko str., 3rd oor
Dnepropetrovsk, Ukraine, 49044
tel./fax: [phone]
http://www.en.zenit-pro.com