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MODEL: BNH-1770
DEMOLITION HAMMER
OPERATOR MANUAL
Read this Operator Manual carefully before operating this tool.
This Manual includes important Tool Safety warnings. Failure to
follow instructions may result in electrical shock, fire and/or serious
personal injury.
This power tool is intended for chiseling work in concrete, brick, ma-
sonry and asphalt, as well as for driving and compacting, when using
corresponding and respective accessories.
This tool should be used only for its prescribed purpose.
Any other use is deemed to be a case of misuse.
3450 N. SABIN BROWN ROAD • WICKENBURG, AZ 85390
(800) 992-3833 • MAIL@BNPRODUCTS.COM
Page | 1
www.bnproducts.com
BN Products-USA
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Table of Contents
Summary of Contents for Benner-Nawman BNH-1770
- Page 1 MODEL: BNH-1770 DEMOLITION HAMMER OPERATOR MANUAL Read this Operator Manual carefully before operating this tool. This Manual includes important Tool Safety warnings. Failure to follow instructions may result in electrical shock, fire and/or serious personal injury. This power tool is intended for chiseling work in concrete, brick, ma- sonry and asphalt, as well as for driving and compacting, when using corresponding and respective accessories.
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Page 2: Work Area Safety
DEMOLITION HAMMER OPERATOR MANUAL Thank you for choosing our BNH-1770 Industrial Demolition Hammer. This man- ual covers the proper operation and maintenance. Before operating, please read this manual carefully for important procedures and safety. All technical data and drawings in this manual are consistent with manufacturing information on this product. -
Page 3: Personal Safety
PERSONAL SAFETY • Stay alert when operating a power tool. Do not use a power tool while you are tired or under the influence of drugs, alcohol or medication. • Avoid unintentional running of the tool. Ensure the switch is in the off-posi- tion before connecting to power source, lifting, or transporting the tool. -
Page 4: Vibration Safety
SERVICE Have your power tool serviced by a qualified repair person using only genuine replacement parts. A parts guide is available for this tool at BNProducts.com. Contact BN Products-USA™ Customer Service at (800) 992-3833 if you need assis- tance from a qualified professional service department. DEMOLITION HAMMER SAFETY •... - Page 5 SPECIFICATIONS & ACCESSORIES INCLUDED Description 1700W Demolition Hammer Power 120W / 60Hz Impact Power 50Joules / 37 ft. pounds Impact Rate 1650 BPM Chuck / Bit Lock 30mm hexagon flat shank system with key Unit Weight 39 lbs. (17.7 kg) Accessories Included (1) protective Case (1) Carbon Brush Kit...
- Page 6 OPERATING INSTRUCTIONS Use only accessories designed for this tool. Follow instructions that accompany all accessories. ONLY use SDS Max chisels with the BNH- 1145 Demolition Hammer. Use hearing protection and eye protection while operating this tool. If any part is missing or damaged, do not use the demolition hammer; contact BN Customer Service for assistance.
- Page 7 Installing Hex Shank Chisels For Hex Shank chisels. Extend the chisel lock handle 180° outward to a horizon- tal position. Do not move the handle past the socket where the chisel is inserted. A small amount of grease may be applied to the shank end of the chisel before installation.
- Page 8 Standard Steel Air Hammer Chisel Removal CAUTION: Before removing a chisel, make sure that you use suitable gloves, as a chisel may be very hot to the touch after use. To remove a chisel from the chuck, extend the chisel lock handle into the open position as shown in the left- side diagram.
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Page 9: Maintenance And Inspection
100 hours of use. At least 1/4” of the wearable surface should remain for the tool to perform optimally. To inspect and replace carbon brushes on the BNH-1770 Demolition Hammer: • Unplug the tool before performing any work, allow the tool to cool if it has recently been used. - Page 10 (Mounting Screws) • Remove the cover, exposing the carbon brushes as shown. • The two brushes are secured with a spring clip (coil spring) on each side of the tool. To remove, the clip should be moved using a small screwdriver. The wire lead can be pulled away from the wire lead connector to free each of the two carbon brushes.
- Page 11 • To re-install the brushes or replace with a new set, the brush should be insert- ed into the brush carrier subassembly, the lead wire connected, and the spring clip (coil spring) should be repositioned to firmly hold the brush into place. The wire lead must be reconnected to the wire lead connector.
- Page 12 BN Products-USA, LLC. 34560 North Sabin Brown Road Wickenburg, AZ 85390 Customer Service: (800) 992-3833 Website: www.BNProducts.com Page | 12 BN Products-USA www.bnproducts.com...
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