Minnich A-1-24 User manual
Minnich
A-1-24/30 UTL DOWEL DRILL
OPERATOR/SERVICE MANUAL
Minnich Manufacturing
1444 ST RT 42
Mansfield,OH 44903
Contact
Phone: (419)-903-0010
Email: [email protected]
Dowel Drill Manual 2
TABLE OF CONTENTS
Chapter 1-Introduction......................................................................................................................................1
General Warnings..................................................................................................................................3
General Safety........................................................................................................................................4
General Specifications.......................................................................................................................9
Safety Decal Location..........................................................................................................................11
Usage Calculation.................................................................................................................................15
Step Operation......................................................................................................................................16
Troubleshooting Guide........................................................................................................................17
Air Cylinder Information.......................................................................................................................19
Chapter 2-Parts Manual...................................................................................................................................20
Parts Manual..........................................................................................................................................20
Pressure Regulator Information.........................................................................................................22
Oiler Information...................................................................................................................................24
Hammer Parts Manual.........................................................................................................................25
Notes.......................................................................................................................................................26
Warranty Information...........................................................................................................................27
Parts Ordering Online.........................................................................................................................28
See engine manual for information pertaining
to the engine.
If there are any questions regarding the ma-
chine or its application which are not covered
in this manual or in other literature accompa-
nying this unit, please contact your Minnich
Dealer or Minnich Manufacturing at 419-903-
It is Minnich’s policy to constantly strive to
improve our products. The information, spec-
ifications, and illustrations in this publication
are based on the information in effect at the
same time as approval for printing and pub-
lishing. Minnich therefore reserves the right
to make changes in design and improve-
ments whenever it is believed the efficiency
of the machine which has been shipped or
curring any obligation to incorporate such im-
provements in any machine which has been
shipped or is in service. It is recommended
that users contact Minnich or a Minnich Deal-
er for latest revisions.
3
Dowel Drill Manual
GENERAL WARNINGS
CALIFORNIA PROPOSITION 65
Engine exhaust and some of its constituents,
and some dust created by power sanding,
sawing, grinding, drilling and other construction
activities contains chemicals known to the Sate
of California to cause cancer, birth defects and
other reproductive harm. Some examples of
these chemicals are:
Lead from lead-based paints.
Crystalline silica from bricks.
Arsenic and chromium from chemically treated
lumbar.
Your risk from these exposures caries, depend-
ing on how often you do this type of work. To
reduce your exposure to these chemicals:
ALWAYS work in a well ventilated area, and
work with improved safety equipment, such
as dust masks that are specifically designed to
filter out microscopic particles.
SILICOSIS WARNING
Grinding/cutting/drilling of masonry, concrete,-
metal and other materials with silica in their
composition may give off dust or mist contain-
ing crystalline silica.
Silica is a basic components of sand, quarts,
brick clay, granite and numerous other minerals
and rocks. Repeated and/or substantial inha-
lation of airborne crystalline silica can cause
serious or fatal respirator disease, including sil-
icosis. In addition, California and some author-
ities have listed repairable crystalline silica as a
substance known to cause cancer. When cutting
such materials, always follow the respiratory
precautions mentioned above.
RESPIRATORY HAZARDS
Grinding/cutting/drilling of masonry, concrete,metal and fumes containing
chemicals known to cause serious or fatal injury or illness, such as respirato-
ry disease, cancer, birth defects or other reproduction harm, if you are
unfamiliar with th risks associated with the particular process and/or materi-
al being cut or the composition of the tool being used, review the material
safety data sher and/or consult your employer, the material manufacturer/
supplier, governmental agencies such as OSHA and NIOSH and other
sources on hazardous materials. California and some other authorities, for
instance, have published lists of substances known to cause cancer, repro-
ductive toxicity or other harmful effects.
Control dust, mist and fumes at the source where possible. In this regard use good work practices and
follow the recommendations of the manufactures of suppliers, OSHA/NIOSH, and occupational and
trade associations. Water should be used for dust suppression when wet cutting is feasible. When the
hazards from inhalation of dust, mist and fumes cannot be eliminated, the operator and any bystand-
ers should always wear a respirator approved by NIOSH/MSHA for the materials being used.
Dowel Drill Manual 4
GENERAL SAFETY
SYMBOL SAFETY HAZARD
Lethal exhaust gas hazards
Explosive fuel hazards
Burn hazard
Factory Setting
SAFETY SYMBOLS
Potential hazards associated with the operation
of this equipment will be referenced with hazards
symbols witch may appear throughout this manual
in conjunction with safety messages.
Indicates a hazardous situation witch, if not
avoided, COULD result in DEATH or SERI-
OUS INJURY
Indicates a hazardous situation witch, if not
avoided, COULD result in MINOR or MOD-
ERATE INJURY
Indicates a hazardous situation witch, if not
avoided, WILL result in DEATH or SERIOUS
INJURY
Addresses practices not related to personal
injury
SAFETY MESSAGES
The four safety messages shown below will
inform you about potential hazards that could
injure you or others. The safety messages specif-
ically address the level of exposure to the opera-
tor and are preceded by one of four words:
DANGER, WARNING, NOTICE or NOTICE.
Do not operate or service the equipment before
reading the entire manual. Safety precautions
should be followed at all times when operating this
equipment. Failure to read and understand the safe-
ty messages and operating instructions could result
in injury to yourself and others.
This operation manual has been developed to pro-
vide complete instruction for the safe and efficient
operation. Refer to the engine manufactures instruc-
tions for data relative to its safe operation. Before
using, ensure that the operation individual
has read and understood all instructions in the
manual. The surrounding environment and you,
could be damaged if you do not follow instructions.
DO NOT USE TOOL IF IT IS IN NEED OF SERVICE!
5
Dowel Drill Manual
GENERAL SAFETY
∆NEVER operate this equipment without
proper protective clothing, shatter proof
glasses, respirator protection, hearing pro-
tection, steel-toes boots and other protec-
tive devises required by the job or city and
sate regulations.
∆Never operate this equipment
when not feeling well due to
fatigue, illness or when under
medication.
∆NEVER operate this equipment under the
influence of drugs or alcohol.
∆ALWAYS check the equipment for loosened
threads or bolts before starting.
∆NEVER operate around corrosive chemicals
or water containing toxic substances. These
fluids could create serious health and envi-
ronmental hazards. Contact local authorities
for assistance.
∆DO NOT use the equipment for any purpose
other than its intended purpose or applica-
tions.
∆This equipment should only be operated by
trained and qualified personnel 18 years of
age and older.
∆This equipment is for industrial use only.
Whenever necessary, replace nameplate,
operation and safety decals when
they become difficult to read.
∆Manufacturer does not assume responsibility
for any accident due to equipment modifica-
tions. Unauthorized equipment modifications
will void all warranties. Any modification
which it could lead to change in the original
characteristics of the machine should be
made only by the manufacturer who shall con-
firm that the machine is in comfortability with
appropriate safety regulations.
∆Never use accessories or attachments that are
not recommended by Minnich for the equip-
ment. Damage to the equipment and/or injury
to user may result.
∆Always know the location of the
nearest fire extinguisher.
∆ALWAYS know the location of the
nearest first aid kit.
∆ALWAYS know the location of the nearest
phone or keep a phone on the job site. Also,
know the phone numbers of the nearest
ambulance, doctor and fire department. This
information will be invaluable in the case of an
emergency.
∆NEVER operate the equipment in an
explosive atmosphere, near combus-
tible materials, or near flammable or
low flash point fluids. An explosion or
fire could result causing severe bodily
harm or even death.
∆NEVER disconnect any emergency or safety
devices. These devises are intended for op-
erator safety. Disconnection of these devices
can cause severe injury, bodily harm or even
death. Disconnection of any of these will void
all warranties.
∆NEVER operate equipment with the covers or
guards removed. Keep fingers, hands, hair and
clothing away from all moving parts to prevent
injury. Wear clothing that will not likely be-
come caught in the equipment or snag on any
moving parts.
∆ALWAYS be sure the operator is familiar
with the proper safety precautions and op-
erating techniques before using.
∆NEVER leave the machine unattended.
Turn off when unattended
Dowel Drill Manual 6
GENERAL SAFETY
∆ DO NOT expose vibrator to rain.
∆ DO NOT use vibrator motor in damp or wet
locations without proper electrical circuits.
∆ DO NOT immerse the motor part in con-
crete.
∆ ALWAYS keep clear of rotating or moving
parts while operating.
∆ NEVER leave the machine unattended while
running
∆ ALWAYS disconnect the motor from the
power source when not in use, before servic-
ing, and when changing flexible shafting and
vibrator heads.
∆ Allow the machine to cool
before servicing. Contact with
hot components can cause
serious burns.
∆ Before Each use, ALWAYS check the motor
to make certain that there are no damaged
parts and that all parts function properly.
If any damage or malfunctioning parts are
found, have them repaired or replaced by an
authorized service facility.
∆ ALWAYS secure forms. Make sure the form
work is well made and braced to withstand
the stresses made by vibration.
∆ ALWAYS keep vibrator motor clean for bet-
ter and safer operation.
∆ ALWAYS store equipment properly when
it is not being used. Equipment should be
stored in a clean, dry location out of reach
of children and unauthorized personnel.
∆ Use only factory authorized replacement
parts.
∆ Store idle vibrator motor. When not in use,
motor should be stored in a dry, safe stor-
age area.
∆ DO NOT pour waste or oil directly into the
ground, down a drain or into any water
source.
ENVIRONMENTAL SAFETY/DECOMMISSIONING
∆ Contact you country department
of Public Works or recycling
agency in your area and arrange
for proper disposal of any elec-
trical components, waste or oil
associated with this equipment.
∆ When the life cycle of this equipment is over,
remove battery (if equip) and bring to appro-
priate facility for lead reclamation. Use safety
precautions when handling batteries that
contain sulfuric acid.
∆ When the life cycle of this equipment is over,
it is recommended that the unit frame and
all other metal parts be sent to a recycling
center.
Metal recycling involves the collection of
metal from discarded products and its trans
formation into raw materials to use in many
Manufacturing a new product.
Recyclers and manufactures alike promote the
process of recycling center promotes energy
cost savings.
Decommissioning is a controlled process used to
safely retire a piece of equipment that is no longer
serviceable. If the equipment poses an unaccept-
able and unrepairable safety risk due to wear or
damage or is no longer cost effective to maintain
(beyond life-cycle reliability) and is to be decommis-
sioned (demolition and dismantlement), be sure to
follow rules below.
∆ ALWAYS observe all applicable compulsory reg-
ulations relevant to environmental protection,
especially fuel storage, the handling of hazard-
ous substances, and the wearing of protective
clothing and equipment. Instruct the user as a
necessary, or, as the user, request this informa-
tion and training.
7
Dowel Drill Manual
GENERAL SAFETY
∆ ALWAYS keep the machine in proper running
condition.
∆ ALWAYS become familiar with the compo-
nents of the machine before operation.
∆ Fix damage to machine and replace any bro-
ken parts immediately.
∆ ALWAYS store equipment properly when it is
not being used. Equipment should be stored
in a clean, dry location out of the reach of
children and unauthorized personnel.
∆ NEVER lubricate components or attempt ser-
vice on a running machine
∆ NEVER tamper with the factory
settings of the engine or en-
gine governor. Damage to the
engine or equipment can result
in operation in speed ranges
above the maximum allow-abil-
ity.
∆ ALWAYS Dispose of hazardous waste proper-
ly. Examples of potentially hazardous waste
include used motor oil, fuel, and fuel filters.
∆ DO NOT use food or plastic containers to
dispose hazardous waste.
∆ DO NOT pour waste or oil directly onto the
ground, down or drain or into any waste
source.
BEFORE CONNECTING THE AIR COMPRESSOR:
∆ NEVER attempt to loosen any compressed air
hose that is pressurized.
∆ KEEP AWAY from all hot or spark generating
objects, do not smoke when handling fuel.
∆ So as to facilitate shipment, new or repaired
units are not lubricated before delivery to cus-
tomers.
∆ DO NOT use hydrocarbons and especially do
not use fuel oil for lubricating purposes.
∆ DO NOT OPERATE MACHINE WITHOUT
GUARDS AND COVERS IN PLACE
∆ ALWAYS disconnect the air supply before chang-
ing steel or dismantling the tool for service or
repair. For maximum safety we advise the in-
stallation of a shut-off valve at the end of the air
line.
∆ NEVER operate the engine with heat shields or
guards removed.
∆ DO NOT remove the engine oil drain plug while
the engine is hot. Hot oil will gush out of the
engine crankcase and severely scald any persons
in the general area of the machine.
∆ Install the drill steel and bits into the drill motors
and close the latch retainers and rod guides.
∆ Make sure that the air compressor is set at an
operating pressure of not more than 120 PSIG
(8Bar)
∆ Make sure air line is cleaned out and is of the
proper size and pressure rating for the drill unit.
∆ Make sure the lubricator is filled with proper
lubricant. See Minnich recommended lubricant
below.
∆ Make sure all controls are in the “off” position
and the lift lever (if so equipped) is in the “up”
position.
∆ Make sure all lock pins are in their locked posi-
tion.
Dowel Drill Manual 8
GENERAL SAFETY
Connect/start
Storage
If the vibration intensity drops, check that the
filters are not clogged or that hoses are not
kinked.
To properly store unit after use, hang the
vibrator with the head up and set the handle
(variable control assembly) in the open position
to permit the discharge of possible impurities,
contaminants and water.
Placement and consolidation
The force exerted by an internal concrete vibra-
tor is controlled by the weight and the speed
at which the eccentric rotates. The centrifugal
force exerted can be arrived at by various com-
binations of weight (size of eccentric weight)
and the speed at which the weight rotates. For
years the most favorable working speed for a
vibrator was considered to be around 10,200
RPM (VPM) and consequently this figure is used
in many vibrator comparisons. More recently,
the optimum speed for compaction has been
accepted as being between 7500 and 9000
RPM.
To find the latest revision of this publication,
visit our website at: www.minnich-mfg.com
THIS MANUAL MUST ACCOMPANY THE
EQUIPMENT AT ALL TIMES.
Specifications and part numbers are subject
to change without notice.
∆ Stay alert, watch what you are doing, and use
common sense when operating the machine.
∆ DO NOT use the tool while tired or under the
influence of drugs, alcohol, or medication. A
moment of inattention while operating power
tools may result in serious personal injury or
death.
∆ Dress properly. DO NOT wear loose clothing or
jewelry. Tie up long hair. Keep your hair, cloth-
ing and gloves away from moving parts. Loose
clothes, jewelery, or long hair can be caught in
moving parts.
∆ DO NOT overreach. Keep proper footing and
balance at all times. Proper footing and balance
enables better control in unexpected situations.
PERSONAL SAFETY
SERVICE
∆ Tool service must be preformed only by qual-
ified repair personnel. Service or maintained
preformed by unqualified personnel could
result in injury or death
∆ When servicing a tool, use only identical
replacement parts. Use of unauthorized parts
may create a risk of injury or death.
∆ CLEAR AIR SUPPLY LINE: Before connecting
vibrator, clear the compressed air supply line of
possible impurities, contaminants and water.
∆ LUBRICATE: Every day or every four hours
of continuous service, pour a ½ teaspoon of
non-detergent oil into the quick release cou-
pling. NOTE: An optional oiler/strainer is avail-
able.
9
Dowel Drill Manual
GENERAL SPECIFICATION
A-1-24 UTL Specifications
Model A-1-24
Drill Steel Shank .875” x 3.25”
(22.2mm x 82.6mm)
Drill Steel Length U.C. 9”(22.9-cm)
Drill Bit Diameter .625” – 1.00”
(15.9mm to 25.4mm)
*Maximum Drill Depth 7” (17.8 c m )
Drill Distance From
Top of Slab
3” - 10”
(7.6cm to 25.4cm)
Minimum Cutout Width 24” (61.0cm)
SCFM Required 32 (0.9 m^3/min)
PSIG Required 84.5 (5.8 BAR)
Weight 75lbs. (34.0kg)
Specification shown are standard. Variations to the standard are available.
Dust collection is available.
*Based on 2 peice steel and bits. Whirly should be 1” (2.5cm) longer for maxamum drilling depth.
A-1-30 UTL Specifications
Model A-1-30UTL
Drill Steel Shank .875” x 3.25”
(22.2mm x 82.6mm)
Drill Steel Length U.C. 12”(30.5-cm)
Drill Bit Diameter .625” – 1.00”
(15.9mm to 25.4mm)
*Maximum Drill Depth 10” (25.4cm)
Drill Distance From
Top of Slab
3” - 10”
(7.6cm to 25.4cm)
Minimum Cutout Width 30” (76.2cm)
SCFM Required 32 (0.9 m^3/min)
PSIG Required 84.5 (5.8 BAR)
Weight 80lbs. (36.3kg)
Dowel Drill Manual 10
GENERAL SPECS
Pneumatic Connection:
• Approved air disconnect is required to be installed in accordance to Local and National Codes.
Environmental:
• +5°C to +40°C (+41°F to +104°F)
• 50% Rh at +40°C (+104°F), (90% Rh at +20°C (+68°F))
• Altitude – 1000m (3280ft) above mean sea level
• Unit is to be disposed according to all Local and National Regulations
Transportation and Storage:
• -25°C to +55°C for 24 hours (-13°F to +131°F)
Ingress Protection:
• Protection level IP2X is provided
Sound:
• System operates at sound levels about 85dBA and 85dBC. Hearing protection is required.
Pneumatic hammer:
• DO NOT force tool. Use the correct toll for your application.
• DO NOT use the machine if valve handles do not turn drill on/off.
• DO NOT make any adjustment while air is hooked up to the machine.
Operation of machine:
• DO NOT overreach, keep proper footing and balance at all times.
• DO NOT wear loose clothing, or jewelry. Tie up long hair.
• DO NOT use the machine if maintenance is required.
Transportation, service and Storage:
• DO NOT use your hands to search for air leaks
• DO NOT service the machine unless you are qualified
• KEEP OIL resivoir filled - run drill frequently to keep the system lubricated.
11
Dowel Drill Manual
SAFETY DECAL LOCATION
All safety labels on Minnich Manufacturing
units have been carefully placed so they can
be easily seen at all times. There are several
different types of labels on the units. Always
keep these warnings free of dirt, concrete,
or anything else that restricts visibility. Never
remove the labels for any reason. If the label
on your machine become worn or in any way
difficult to read, call our parts department for
replacements.
A
B
C
D
E
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
DRILLS WILL
AUTOMATICALLY START
WHEN AIR SUPPLY IS LOST
AND REAPPLIED
12287-64
WARNING
DRILLS WILL
AUTOMATICALLY START
WHEN AIR SUPPLY IS LOST
AND REAPPLIED
12287-64
WARNING
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER HEARING
PROTECTION
FLYING PARTICLES MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
HIGH PRESSURE
KEEP AWAY FROM LEAKS
BLEED DOWN BEFORE REMOVING
LINES TO SERVICE
DUST CAN CAUSE INJURY TO
YOUR HEALTH
IF VENTILATION IS INADEQUATE
USE AN APPROVED RESPIRATOR
122 87- 3
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PS I (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
12287-6212287-62
12287-42
12287-38
1
12287-36
12287-36
12287-37
12287-43
READ & UNDERSTAND OWNERS MANUAL COMPLETELY.
TIGHTEN ALL LOOSE BOLTS INSPECT ALL LINES, PIPES, AND HOSES FOR DAMAGE.
REPAIR AS NECESSARY.
DRILL STEEL MUST NOT BE BINDING IN GUIDE BEARING. MAKE SURE DRILL STEEL
IS STRAIGHT, FREE OF OBSTRUCTIONS, AND NOT BINDING IN ANYWAY.
FILL THE OILER-PER MANUAL.
WARNING
STAND CLEAR
WHEN RAISING OR LOWERING
12287-10
WARNING
STAND CLEAR
WHEN RAISING OR LOWERING
12287-10
WARNING
KEEP GUARDS IN PLACE
DISCONNECT POWER
BEFORE SERVICING
12287-12
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
INSTALL LOCK
PIN PRIOR TO
TRANSPORTING MACHINE
12287-7
DRILL HAMMERS WILL NOT
FUNCTION WHEN INDICATOR IS RED
WHEN INDICATORS IS RED FILL OIL RESERVOIR
WITH PROPER ROCK DRILL LUBRICANT
GREEN INDICATES LUBRICATOR RESERVOIR IS FULL
Bio-Rock Drill
Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
F
G H
I
J
K
L
M
12287-62
12287-62
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
WARNING
NOISE MAY
DAMAGE HEARING
WEAR PROPER HEARING
PROTECTION
FLYING PARTICLES MAY CAUSE
EYE INJURIES
WEAR PROPER EYE
PROTECTION
HIGH PRESSURE
KEEP AWAY FROM LEAKS
BLEED DOWN BEFORE REMOVING
LINES TO SERVICE
DUST CAN CAUSE INJURY TO
YOUR HEALTH
IF VENTILATION IS INADEQUATE
USE AN APPROVED RESPIRATOR
122 87- 3
WARNING
BE SURE SUPPLY LINES ARE SECURE
DO NOT EXCEED 120 PSI (8.25 BARS)
OR DAMAGE TO MACHINE AND OR
BODILY HARM MAY RESULT
12287-1
FILL OIL
RESERVOIR
EVERY
TWO HOURS
ATTENTION
HIGH PRESSURE
BLEED AIR PRESSURE
BEFORE SERVICING
PRIOR TO
OPERATION
Read and understand
owners manual
completely.
Tighten all loose bolts,
inspect all lines, pipes,
and hoses for damage.
Repair as necessary.
Drill steel must not be
binding in guide
bearing. Make sure
drill steel is straight,
free of obstructions,
and not binding in any
way.
Fill the oiler per
manual.
12287-156
A-1-24
A-1-24
Bio-Rock Drill
Oil 15W50
TM
Minnich Mfg. Recommended Rock Drill Oil
N
COMPONENTS MAY
BE ENERGIZED EVEN
AFTER BEING UNPLUGGED
Input From Power Source
230 Volt AC
Single Phase
50/60 Hz
15 Amps Minimum
419-903-0010
www.minnich-mfg.com
VOLTSMODEL
CYCLE PHASE
SERIAL
VPM
M-BOX
180
6000 / 8000 / 10,800
230 AC
3
CAUTION
Hazard of electrical shock, burn or
explosion. Turn off power supplying this
equipment before working on or inside.
Replace cover before re-energizing.
WARNING
If this unit is subjected to an excessive
shock by being dropped or impacted, or if
the enclosure is damaged, it should be
disconnected and not used until it has been
inspected and repaired by a qualied
electrician or personnel.
PRIOR TO OPERATION
Read and understand all safety, operating
and maintenance instructions before using
this product.
O
F
F
6
,
0
0
0
8
,
0
0
0
1
0
,
8
0
0
O
F
F
6
,
0
0
0
8
,
0
0
0
1
0
,
8
0
0
A-1-24 UTL
A-1-30 UTL
P
Dowel Drill Manual 12
SAFETY DECAL LOCATION
J
K
A
12287-62
12287-62
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPERHEARING
PROTECTION
FLYINGPARTICLESMAYCAUSE
EYEINJURIES
WEARPROPEREYE
PROTECTION
HIGHPRESSURE
KEEPAWAYFROMLEAKS
BLEEDDOWNBEFORE REMOVING
LINESTOSERVICE
DUSTCANCAUSE INJURYTO
YOURHEALTH
IFVENTILATIONISINADEQUATE
USEANAPPROVED RESPIRATOR
12287-3
WARNING
BESURESUPPLY LINES ARE SECURE
DONOTEXCEED 120 PS I (8.25 BARS)
ORDAMAGETO MACHINE AND OR
BODILYHARMMAY RESULT
12287-1
FILLOIL
RESERVOIR
EVERY
TWOHOURS
ATTENTION
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
PRIORTO
OPERATION
Readand understand
ownersmanual
completely.
Tightenall loose bolts,
inspectall lines, pipes,
andhoses for damage.
Repairas necessary.
Drillsteel must not be
bindingin guide
bearing.Make sure
drillsteel is straight,
freeof obstructions,
andnot binding in any
way.
Fillthe oiler per
manual.
12287-156
A-1-24
A-1-24
Bio-RockDrill
Oil 15W50
TM
MinnichMfg. Recommended Rock Drill Oil
M
N
COMPONENTSMAY
BEENERGIZED EVEN
AFTERBEING UNPLUGGED
InputFrom Power Source
230Volt AC
SinglePhase
50/60Hz
15Amps Minimum
419-903-0010
www.minnich-mfg.com
VOLTSMODEL
CYCLE PHASE
SERIAL
VPM
M-BOX
180
6000/ 8000 / 10,800
230AC
3
CAUTION
Hazardofelectrical shock, bur n or
explosion. Turnoff power supplying this
equipmentbeforeworking on or inside.
Replacecover beforere-energizing.
WARNING
Ifthis unit is subjected to an excessive
shockby being droppedor impacted, or if
theenclosureis damaged, it should be
disconnectedand not used until it has been
inspectedand repairedby a qualied
electricianor personnel.
PRIORTO OPERATION
Readand understand all safety,operating
andmaintenance instructions beforeusing
thisproduct.
O
F
F
6
,
0
0
0
8
,
0
0
0
1
0
,
8
0
0
O
F
F
6
,
0
0
0
8
,
0
0
0
1
0
,
8
0
0
B
C
G
COMPONENTSMAY
BEENERGIZED EVEN
AFTERBEING UNPLUGGED
Input From Power Source
230 VoltAC
Single Phase
50/60 Hz
15 Amps Minimum
419-903-0010
www.minnich-mfg.com
VOLTSMODEL
CYCLE PHASE
SERIAL
VPM
M-BOX
180
6000 / 8000 / 10,800
230 AC
3
CAUTION
Hazardof electrical shock, burn or
explosion. Turn off power supplying this
equipmentbefore working on or inside.
Replacecover before re-energizing.
WARNING
Ifthis unit is subjected to an excessive
shockby being dropped or impacted, or if
theenclosure is damaged, it should be
disconnectedand not used until it has been
inspectedand repaired by a qualied
electricianor personnel.
PRIOR TO OPERATION
Readand understand all safety, operating
andmaintenance instructions before using
thisproduct.
O
F
F
6
,
0
0
0
8
,
0
0
0
1
0
,
8
0
0
O
F
F
6
,
0
0
0
8
,
0
0
0
1
0
,
8
0
0
D
E
12287-62
12287-62
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPERHEARING
PROTECTION
FLYINGPARTICLESMAYCAUSE
EYEINJURIES
WEARPROPEREYE
PROTECTION
HIGHPRESSURE
KEEPAWAYFROMLEAKS
BLEEDDOWNBEFORE REMOVING
LINESTOSERVICE
DUSTCANCAUSE INJURYTO
YOURHEALTH
IFVENTILATIONISINADEQUATE
USEANAPPROVED RESPIRATOR
12287-3
WARNING
BESURESUPPLY LINES ARE SECURE
DONOTEXCEED 120 PS I (8.25 BARS)
ORDAMAGETO MACHINE AND OR
BODILYHARMMAY RESULT
12287-1
FILLOIL
RESERVOIR
EVERY
TWOHOURS
ATTENTION
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
PRIORTO
OPERATION
Readand understand
ownersmanual
completely.
Tightenall loose bolts,
inspectall lines, pipes,
andhoses for damage.
Repairas necessary.
Drillsteel must not be
bindingin guide
bearing.Make sure
drillsteel is straight,
freeof obstructions,
andnot binding in any
way.
Fillthe oiler per
manual.
12287-156
A-1-24
A-1-24
Bio-RockDrill
Oil 15W50
TM
MinnichMfg. Recommended Rock Drill Oil
H
L
I
F
P
HIGHPRESSURE
BLEEDAIRPRESSURE
BEFORESERVICING
DRILLSWILL
AUTOMATICALLYSTART
WHENAIR SUPPLYIS LOST
ANDREAPPLIED
12287-64
WARNING
DRILLSWILL
AUTOMATICALLYSTART
WHENAIR SUPPLYIS LOST
ANDREAPPLIED
12287-64
WARNING
WARNING
NOISEMAY
DAMAGEHEARING
WEARPROPERHEARING
PROTECTION
FLYINGPARTICLESMAYCAUSE
EYEINJURIES
WEARPROPEREYE
PROTECTION
HIGHPRESSURE
KEEPAWAYFROM LEAKS
BLEEDDOWNBEFORE REMOVING
LINESTOSERVICE
DUSTCANCAUSE INJURY TO
YOURHEALTH
IFVENTILATIONIS INADEQUATE
USEANAPPROVED RESPIRATOR
12287-3
WARNING
BESURE SUPPLY LINES ARE SECURE
DONOT EXCEED 120 PSI(8.25BARS)
ORDAMAGE TO MACHINE AND OR
BODILYHARM MAY RESULT
12287-1
12287-62
12287-62
12287-42
12287-38
1
12287-36
12287-36
12287-37
12287-43
READ& UNDERSTAND OWNERS MANUAL COMPLETELY.
TIGHTENALL LOOSE BOLTS INSPECT ALL LINES, PIPES, AND HOSES FOR DAMAGE.
REPAIRAS NECESSARY.
DRILLSTEEL MUST NOT BE BINDING IN GUIDE BEARING. MAKE SURE DRILL STEEL
ISSTRAIGHT, FREE OF OBSTRUCTIONS, AND NOT BINDING IN ANYWAY.
FILLTHE OILER-PER MANUAL.
WARNING
STANDCLEAR
WHENRAISING OR LOWERING
12287-10
WARNING
STANDCLEAR
WHENRAISING OR LOWERING
12287-10
WARNING
KEEP GUARDS IN PLACE
DISCONNECT POWER
BEFORE SERVICIN G
12287-12
INSTALL LOCK
PINPRIOR TO
TRANSPORTING MACHINE
12287-7
INSTALL LOCK
PINPRIOR TO
TRANSPORTING MACHINE
12287-7
INSTALL LOCK
PINPRIOR TO
TRANSPORTING MACHINE
12287-7
INSTALL LOCK
PINPRIOR TO
TRANSPORTING MACHINE
12287-7
DRILLHAMMERSWILL NOT
FUNCTIONWHENINDICATORIS RED
WHENINDICATORSISRED FILL OIL RESERVOIR
WITHPROPERROCK DRILL LUBRICANT
GREENINDICATESLUBRICATORRESERVOIR IS FULL
Bio-RockDrill
Oil 15W50
TM
MinnichMfg. Recommended Rock Drill Oil
13
Dowel Drill Manual
DRILL STEEL & BITS
Warranty Policy
All drill steel and bits sold to customer are
intended for use in drilling concrete. It is not
capable of drilling through steel mesh, rebar
or dowel bars. Use in these applications will
void all warranties and dramatically shorten
bit life. Bit life is also affected by the sharp-
ness of the bit, type of aggregate and con-
dition of concrete. Minnich Manufacturing’s
drill steel and bit warranty is limited to the
warranty provided by the supplier. All war-
ranty claims must be submitted to Minnich
for evaluation and sent to the supplier for
authorization.
General Notes
1. 2” (50.8mm) diameter maximum bit for
hydraulic drills.
2. 2 1/2” (63.5mm) diameter maximum bit for
pneumatic drills.
3. 5/8” (16mm) diameter is the smallest hole
diameter.
4. Cutting speed varies from 15 to 30 sec-
onds for a 6” (152.4mm) deep hole, de
pending on bit diameter and aggregate.
5. On average you can get 180 holes, 9”
(228.6mm) deep per bit.
6. On average you can get 600 holes, 9”
(228.6mm) deep per drill steel.
7. Removable bits are carbide and cannot be
re-sharpened.
8. Whirly bit steel can be re-sharpened twice.
Dowel Drill Manual 14
DRILL STEEL - STANDARD SIZES
Part Number Hole Diameter Shank Size UC Length
005367-12.00 5/8” (15.9mm) 7/8” x 4 1/4” (22.2mm x 107.9mm) 12” (30.5cm)
005367-24.00 5/8” (15.9mm) 7/8” x 4 1/4” (22.2mm x 107.9mm) 24” (61.0cm)
004209-12.00 3/4” (19.1mm) 7/8” x 4 1/4” (22.2mm x 107.9mm) 12” (30.5cm)
004209-24.00 3/4” (19.1mm) 7/8” x 4 1/4” (22.2mm x 107.9mm) 24” (61.0cm)
004541-12.00 7/8” (22.2mm) 7/8” x 4 1/4” (22.2mm x 107.9mm) 12” (30.5cm)
004541-24.00 7/8” (22.2mm) 7/8” x 4 1/4” (22.2mm x 107.9mm) 24” (61.0cm)
004745-12.00 1” (25.4mm) 7/8” x 4 1/4” (22.2mm x 107.9mm) 12” (30.5cm)
004745-24.00 1” (25.4mm) 7/8” x 4 1/4” (22.2mm x 107.9mm) 24” (61.0cm)
All 4 1/4” (107.9mm) shanks can be cut to a 3 1/4” (82.55mm) Shanks
Part Number Shank Size UC Length
003749-12.00 7/8” x 4 1/4” (22.2mm x 107.9mm) 12” (30.5cm)
003749 -24.00 7/8” x 4 1/4” (22.2mm x 107.9mm) 24” (61.0cm)
004116-12.00 7/8” x 4 1/4” (22.2mm x 107.9mm) 12” (30.5cm)
004116 -24.00 7/8” x 4 1/4” (22.2mm x 107.9mm) 24” (61.0cm)
Tapered Steel Notes
For 1” (2.54cm) Bits ONLY
003747-1.000
For 1 1/8” (2.86cm) & Larger
Bits ONLY
Tapered Bits
Part Number Shank Size UC Length
003747-1.000 1” (2.54cm) 003839-00000
003747-1.120 1 1/8” (2.86cm) 003901-00000
003747-1.180 1 3/16” (3.01cm) 003901-00000
003747-1.250 1 1/4” (3.18cm) 003901-00000
003747-1.310 1 5/16” (3.34cm) 003901-00000
003747-1.370 1 3/8” (3.49cm) 003901-00000
003747-1.430 1 7/16” (3.65cm) 003901-00000
003747-1.500 1 1/2” (3.81cm) 003901-00000
003747-1.560 1 9/16” (3.97cm) 003901-00000
003747-1.620 1 5/8” (4.13cm) 003901-00000
003747-1.750 1 3/4” (4.45cm) 003901-00000
003747-1.810 1 13/16” (4.60cm) 003901-00000
003747-1.880 1 7/8” (4.76cm) 003901-00000
003747-2.000 2” (5.08cm) 003901-00000
Notes
Use 003749-12.00 or 003749-24.00
Steel ONLY
Use 004116-12.00 or 004116-24.00
Steel ONLY
1 Piece Steel & Bit (Whirly Bit)
All 4 1/4” (107.9mm) shanks can be cut to a 3 1/4” (82.55mm) Shanks
Part Number Shank Size UC Length
005061-24.00 7/8” x 4 1/4” (22.2mm x 107.9mm) 24” (61.0cm)
05061B-24.00 1” x 4 1/4” (25.4mm x 107.9mm) 24” (61.0cm)
“H” Thread Steel
Part Number Hole Diameter
005140-1.370 1 3/8” (3.49cm)
005140-1.500 1 1/2” (3.81cm)
005140-1.620 1 5/8” (4.13cm)
005140-1.750 1 3/4” (4.45cm)
005140-1.870 1 7/8” (4.76cm)
005140-2.000 2” (5.08cm)
005140-2.250 2 1/4” (5.72cm)
005140-2.500 2 1/2” (6.35cm)
“H” Thread Bits
Notes
Multiple use bit
All 4 1/4” (107.9mm) shanks can be cut to 3 1/4” (82.55mm) shanks
15
Dowel Drill Manual
USAGE CALCULATION
Usage Calculation
The calculations below are nominal and could vary depending on the hardness of the concrete,
aggregates used and the possibility of bits hitting steel reinforcement.
Whirly Bit, Taper Bit and “H” Thread Bit
(B)Bit=180 holes x 9” (22.86cm)
B=1620” (4114.8cm)
Number of bits needed = (number of holes x hole depth)/1620”
Taper Steel and “H” Thread Steel
(S)Steel=600 holes x 9” (22.86cm)
S=5400” (13716cm)
Number of steels needed = (number of holes x hole depth)/5400”
Example:
Need 50,000 Holes 12” (30.48cm) Deep for the job.
(50,000 x 12)/1620 = 371 Bits
(50,000 x 12)/5400 = 112 Steels
Drill Bit Installation
1. Check to see that the hole through the center of the drill steel is not blocked, if so remove the
object.
2. Clean the tapered end of the drill steel and the inside of the drill bit with a non-oily cleaner,
making sure not to leave any oily residue.
3. Make sure a brass shim is in the drill bit. If not, carefully roll a new one and slide it into the bit
making sure that the ends do not overlap.
4. Put the drill bit on the tapered end of the drill steel and tap it on a firm surface to seat the bit.
Drill Bit Removal
1. Swing latch so that drill steel can be removed
from drill.
2. Pull drill steel out of drill.
3. Using two hammers, place one hammer on
bottom side of bit. Using other hammer, strike
the bit on the topside. Rotate drill steel 1/4 turn
and strike top of bit again. Repeat procedure
until bit comes off.
Bit may pop off of drill steel with some force.
Dowel Drill Manual 16
STEP OPERATION
Be sure lubricator is full. See recommended oils below.
Make sure slab wheels are square against face of slab.
Using feed control valve, feed bit against slab.
Using drill control valve, turn drill on and drill until the
drill slider is against the stop clamp, which should be
set for the required depth of hole.
Once drill slider is against the stop clamp, leave the
drill on and use the feed control valve to retract the
drill from the hole. Note: If bit will not retract from hole,
feed drill back into hole and retract drill again.
Step 1
Step 2
Step 3
Step 4
Step 5
DO NOT hit drill slider to retract the bit from
the hole. This will damage the drill slider.
Bio-Rock Drill™ Oil 15W50
Renewable
Lubricants
Minnich recommended rock drill lubricant
17
Dowel Drill Manual
TROUBLE SHOOTING AIR DRILL
Cause Remedy
DRILL NOT GETTING AIR 1. On Multi Drill units, switch airline with drill
that is working properly. If drill now runs
check the air control valve. If the valve works,
check the drill.
2. Check clave on air compressor and drill unit
to be certain they are completely open
3. Check compressor. It should have 100SCFM
(47.20m^3/sec.) per drill and 110PSI (7.6 BAR)
at drill manifold when drilling with large drills.
4. Make certain all fittings are connected prop-
erly and not leaking.
COUPLING OR HOSE OBSTRUCTION Remove Obstruction
FAILURE IN THE ELECTRICAL CIRCUIT Check switches, connections, coilds, ground &
voltage. If the power unit (backhoes, grader,
ETC.) is being jump started, check the AMPS &
voltage being jump supplied to coils from the
battery, it may be too low.
FAILURE OF DRILL SOLENOID VALUE
(MULTI DRILL UNITS WITH REMOTE
ELECTRICAL CONTROLS)
Check valve - you should be able to feel the so-
lenoid move when it is actuated. Make sure you
have current to the solenoid coil. Replace the
dolenoid if there is no movement.
MECHANICAL FAILURE OF DRILL Disassemble the drill & inspect for damaged
parts.
PROBLEM: DRILL DOES NOT RUN
Dowel Drill Manual 18
TROUBLE SHOOTING AIR DRILL
Cause Remedy
NOT ENOUGH AIR REACHING
DRILL. IT SHOULD HAVE 100SCFM
(47. 2 DM^3/sec.) PER DRILL AND 110
PSI (7.6 bar)
On Multi Drill units. Turn off one or two drills. If
the remaining drills pick up speed, check the air
compressor.
RESTRICTION IN AIR LINE A foreign object in the air line or possibly a
reduction in the air line caused by a reducer
fitting.
TOO SMALL AIR LINE Following are supply line sizes for drilling:
A-1 Single Drill 3/4” (19mm)
A-2 Two Drills 1-1/4” (38.75mm)
A-3& A-4 Three & four drills 1-1/2” (38.1mm)
A-5 Five Drills 2” (50.8mm)
AIR PRESSURE TO CYLINDER “FEED-
ING” DRILL INTO CONCRETE NOT
ADJUSTED PROPERLY
Excessive pressure can cause drill to “bind up”
in the hole. Pressure that is too low will not
“feed” the drill into the concrete. The air pres-
sure required varies with the drill model.
Horizontal- all units with large drills use 22-26
PSI (1.5-1.8 bar). Drill units using the 15LB (6.8kg)
class drill will use 16-20 PSI (1.1-1.4 Bar).
Vertical - all drill units use 5-6 PSI (0.34-0.41
Bar). With the correct air pressure, the drill steel
should have a slight rattle.
INSUFFICIENT AIR FLOW TO KEEP
HOLE BLOWN CLEAN
Check for obstruction in the blow tube in the
drill.
LUBRICATOR PUTTING OUT TOO
MUCH OIL TO DRILL
If you notice more than a light film of oil on the
air deflector on the bottom of the drill adjust the
lubricator, make certain you are using the type of
oil called for in the operation and maintenance
manual.
MECHANICAL BLINDING OF DRILL
CARRIER
Make sure the eight bearing pads are adjusted
correctly. The square tube that the drill carrier
slides on must be free of rust so that the carrier
slides freely, drill steel must not be binding in
the guide bearing.
BENT DRILL STEEL, WORN DRILL BIT
OR DRILLING INTO REBAR
Replace the drill steel or bit. If drilling into rebar,
move the drill.
USING 3 1/4” (8.25cm) SHANK DRILL
STEEL IN 4 1/4” (10.8cm)SHANK
CHUCK DRILL
The drill steel will rotate but it will not allow the
drill piston to hammer properly, replace it with
the correct 4 1/4” (10.8cm) drill steel.
PROBLEM: DRILL RUNS SLOW OR DOES NOT DRILL EFFECTIVELY
19
Dowel Drill Manual
CYLINDER SERVICE KITS
1.50” (3.81 cm) Bore 5/8” (1.59 cm) A12899-1.500
2.50” (6.35 cm) Bore 1” (2.54 cm) A12895-2.500 5/8” (1.59 cm) A12899-2.500
3.25” (8.26 cm) Bore 1 3/8” (3.49 cm) A12895.3.250 1” (2.54 cm) A12899-3.250
4.00” (10.16 cm) Bore 1” (2.54 cm) A12899-4.000
5.00” (12.70 cm) Bore 1” (2.54 cm) A12899-5.000
6.00” (15.24 cm) Bore 1 3/8” (3.49 cm) A12899-6.000
7.00” (17.78 cm) Bore 1 3/8” (3.49 cm) A12899-7.000
Rod Diameter Service Kit Part # Rod Diameter
Oversize Rod Cylinders (Feed) Standard Rod Cylinders
Dowel Drill Manual 20
PARTS MANUAL
This manual suits for next models
2
Table of contents
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