Transcript Holmatro Basic Training

What You Need to Know to Maintain
your Rescue Tool System
Holmatro
®
Number One In The World For a Reason
© 4/2004 Holmatro
Presented by:
West Coast Fire & Rescue
Holmatro
®
Number One In The World For a Reason
1. Review basic operation of hydraulic
rescue tools.
2. Cover general maintenance,
troubleshooting and inspection of
rescue tools.
Holmatro
®
Number One In The World For a Reason
Table of Contents
• Basic Hydraulics
– Pascal’s Law
– Double Acting Cylinders
– Tracing the Flow
– Deadman’s Handle
– Fluid Type
Holmatro
®
Number One In The World For a Reason
Table of Contents Cont’d.
• Pumps - The “Heart” of Your System
– Starting Procedure
– Operation Valve Function
Holmatro
®
Number One In The World For a Reason
Contents Cont’d.
• Tools
– Personal Safety
– Common Features
• Maintenance and Storage
– Pumps
– Tools
– Hoses
Holmatro
®
Number One In The World For a Reason
General Knowledge Quiz
• What is the maximum operating pressure
of your Holmatro system?
• 10,500 psi
• What type of fluid is used?
• Mineral based oil
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®
Number One In The World For a Reason
General Knowledge Quiz
• True or False: two tools can be powered at the
SAME time by your DPU30 duo pump.
• True. The tools operate simultaneously, completely
independent of each other, sharing only the oil in the
reservoir.
• True or False?: When running, the pump is
always moving fluid.
• True. When the motor is spinning, the pump is pumping.
With the handle of the tool in neutral, the oil will be
circulating to the tool and back. With no tool attached to
the pump the oil circulates back to the tank.
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®
Number One In The World For a Reason
What is Hydraulics?
A means of transmitting power by
pushing on a confined liquid.
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Pascal’s Principal:
P x A=F
Pressure times Area
Equals Force
Pascal’s Law: Pressure applied on a confined
fluid is transmitted undiminished in all directions,
and acts with equal force on equal areas, and at
right angles to them
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®
Number One In The World For a Reason
This works because:
• Mineral Oil Does Not Compress
• The System is Filled
– Hoses and tools are filled with oil
– There is no air in the system
• The System is Sealed
• The Pressure is the same in all areas
which are pressurized
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Let’s Look at Some Examples:
?
If we apply 10,500 psi to this
area how much force will we be
able to generate?
10,500psi (P) x 6 in²(A) = 63,000 lbf (F)
Bottom Area of Piston
is 6 square inches.
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Double-Acting Hydraulics
All this means is that the piston is extended and retracted
by hydraulic power. This is how the cutter, spreader and
ram operate and generate force.
Pump
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Deadman’s Handle Operation
• Same on all tools
• Automatically
returns to neutral
when released
• Clockwise (CW)
always opens
• Counter-clockwise
(CCW) always
closes
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®
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Deadman’s Handle Operation
•When at rest the handle is in
the neutral position. This
sends the oil in a U-turn back
to the pump. No motion of
tool.
•Rotating the handle either
CW or CCW directs oil to
either the bottom or the top
of the piston, causing the tool
to open or close.
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Deadman’s Handle Operation
•Rotating the handle
either CW or to the
Right directs oil to the
bottom of the piston,
causing the tool to
spread, cut or extend.
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Deadman’s Handle Operation
• Rotating the handle
either CCW or to the left
directs oil to the top of
the piston, causing the
tool to squeeze, open or
retract.
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Mineral Oil Hydraulic Fluid
•
•
•
•
Non-toxic
Non-caustic
SAFE!
Use approved
equivalents only
• Change at LEAST
once per year to
remove contaminants
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®
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Holmatro
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Number One In The World For a Reason
Check Fluid Levels
Operating Controls
Operating Control Valves
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Pumps –Operation DPU30 Duo
• Check fuel level
• Use only unleaded regular gas
DPU30 Honda Duo
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Pumps - Operation
DPU30 Honda Duo
• Check level of engine oil using
dipstick
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Pumps - Operations DPU30 Duo
• Check level of mineral oil using sight glass
• Use only approved fluid
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Pumps – Operations
DPU30 Honda Duo
• Starting the pump
– Fuel On/ Off
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Choke
Common Features
Personal Safety
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Common Features
Cutters & Spreaders
• Light
• Balanced at Carry
Handle
• 360° Access to
Operation Handle
• Recessed Hose
Connection
• Integral Safety Relief
• Compact
• Protective Bend
Restrictors
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Common Features
Telescopic Rams
• Grip heads rotate
• Cross design on grip head
• Extremely powerful
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Personal Safety - Object Lesson
• When we overlook
personal safety
because what we are
doing has become
“routine”…
• It can have adverse
consequences!
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®
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Tools
Pumps
Hoses
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Number One In The World For a Reason
Maintenance and Storage
• Follow these steps after EVERY
use
• Keep your tools clean and in
optimum condition if you want
optimum performance available
at the next accident scene.
• If something doesn’t work
properly take care of it NOW
rather than later.
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®
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Maintenance and Storage
Spreaders
• With the pump running and
pressure to the spreader, close the
spreader fully.
• Operate the handle to open the
spreader approximately 1/4 inch.
• Release pressure at the pump.
• Disconnect spreader. Inspect tool
for damage - tips, handles,
couplers, etc.
• Clean couplers and dust caps
before installing.
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Maintenance and Storage
Cutters
• With the pump running
and pressure to the cutter,
close the cutter fully.
• Operate the handle to open the cutter until the
blades just overlap at the tips.
• Release pressure at the pump.
• Disconnect cutter. Inspect tool for damage blades, handles, couplers, etc.
• Clean couplers and dust caps before installing.
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Maintenance and Storage
Rams
• With the pump running and pressure to the ram, close the ram
fully.
• Operate the handle to extend the ram approximately 1/4 inch.
• Release pressure at the pump.
• Disconnect ram. Inspect tool for damage - cross heads,
handles, couplers, etc.
• Clean couplers and dust caps before installing.
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Maintenance and Storage
Pumps
• Place operation valves in neutral position..
• Shut off pump with either throttle control or stop
switch
• Put pump in ready position according to your
local SOPs.
• Check fuel level.
• Inspect pump for damage - Frame, reservoir,
PRD, couplers, etc.
• Clean couplers and dust caps before installing.
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Maintenance and Storage
•
•
•
•
•
Hoses
Inspect hoses for any kind of damage:
kinks, cuts, abrasions, etc.
If the hose came in contact with any foreign
fluids, such as brake fluid, transmission fluid,
oil, etc. clean using mild soap and water as
soon as possible. To prolong the life of your
hose, minimize exposure to contaminants.
Ensure that bend restrictors are in place and
couplers are not damaged. Coil hose.
Clean couplers and dust caps before
installing.
Immediately remove any damaged hose
from service
Holmatro
®
Number One In The World For a Reason
Proven Performance
More independent testing than any other manufacturer
• Only UL Listed rescue tools
available
– Since 1993
• First NFPA1936 compliant rescue
tools
– Since August 16, 1999
Holmatro
®
Number One In The World For a Reason
Any Questions?
Thank You!
Holmatro
®
Number One In The World For a Reason