What You Need to Know to Maintain
your Rescue Tool System
Holmatro
®
Number One In The World For a Reason
© 4/2004 Holmatro
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
• General Knowledge Quiz
• Basic Hydraulics
– Pascal’s Law
– Double Acting Cylinders
– Tracing the Flow
– Deadman’s Handle
– Fluid Type
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Number One In The World For a Reason
Table of Contents Cont’d.
• Hoses & Couplers
–
–
–
–
–
Coupling Procedures
Auto Lock Coupler
Pressure Relief Device
Hose No-No’s
Care and Maintenance of Hoses
• 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 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.
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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®
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General Knowledge Quiz
• How do you relieve the pressure in a hot
hose?
• Use the pressure relief device which is
hanging from the pump.
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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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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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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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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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Couplers - Care
• Keep Couplers Clean!! NO
DIRT
• Keep Dust Caps On
• Clean With WD40 or
Silicone
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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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Check Fluid Levels
Operating Controls
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Pumps –Operation SR20 Spider
What is a 3-stage pump?
• Stage 1
•
For opening and closing with no resistance
0 - 1500psi (tool runs fast)
• Stage 2 (new)
•
For average cuts and pushes some of the
speed of 1st stage and some of the power of
3rd stage 1,500 – 5,000psi
• Stage 3
•
For harder cuts and pushes slower tool but
lots of power 5,000 – 10,500psi
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Pumps - Operations SR20 Duo
• Check level of mineral
oil -should be between
marks (on side of
tank)
• Use only approved
fluid
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Pumps – Operations
SR20 Honda Duo
• Starting the pump
– Choke
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On/Off
Operation Controls – SR20 Spider
• No dump valves on
Pump!
Change tools
Without having to
dump pressure.
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Pumps - Operation
SR20 Honda Duo
• Fuel Cap
• Carbon filled cap, if
pump is tipped over
carbon in cap will
absorb fuel and may
harden and not allow
air into tank. This can
cause a vapor lock.
Cap may need to be
replaced.
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Common Features
Personal Safety
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Common Features
Cutters & Spreaders
• Light
• Balanced at Carry
Handle
• 360° Access to
Operation Handle
• I - bolt technology
• Integral Safety Relief
• Compact
• LED lights
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Common Features
Cutters & Spreaders
• LED Lights on Carry
Handles
• On/Off Switch on back
of carry handle
• AA battery remove
two screws to change
• If lights will not turn off
batteries need replacing
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Common Features
Telescopic Rams
• Grip heads rotate
• Cross design on grip head
• Extremely powerful
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Pressure Relief Device
• Heat Causes
Oil Expansion
• Expansion
makes coupling
impossible
• Pressure Relief
Device is Used
to Allow
Coupling.
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4050NCT Cutter
•
•
•
•
7 1/8 Blade opening
208,000lbs cutting force
43lbs
NCT blades (Pulls material into
cutting notch)
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4240 Spreader
•
•
•
•
27” Opening
33,625lbs spreading force
44.5lbs
Speed valve (tool moves faster
opening without load)
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Telescopic Rams
3340Mini & 3350
• 4350 Ram 22” to 50” spread
• 39.5lbs
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Core Hose
• High pressure inside
of low pressure hose
• Kevlar reinforce 4:1 safety factor
• Hot swap change tools without returning
to power unit
• Swiveled ends keeps hose from
twisting
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Automatic Locking Coupler
• Flat face coupler
automatically locks
when connected to
male coupler
• Eliminates
connection errors
and saves setup
time - just push to
connect and you
are done!
• Male end of hose
to pump - female
end of hose to tool
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New Automatic Lock Coupler
• Operation
– To connect: push the
male and female fitting
together. Locking is
automatic
– To disconnect: rotate
the gold ring counter
clockwise and then
pull toward rear.
Coupler releases
without leaking
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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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Tools
Pumps
Hoses
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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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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
• 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.
• Recommend using Seafoam or other gas
stabilizer in fuel.
Holmatro
®
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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 Quality
• ISO 9000 Manufacturing Facility in North
America.
• ISO is an international quality assurance
certification program.
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
The End
Holmatro
®
Number One In The World For a Reason