Hydraulic/Power Tools Flashcards
How much horsepower does the HPU produce?
23HP at 3000 rpm.
What is the max hydraulic output from the HPU?
Max 13gpm
What is the maximum operating pressure of the HPU?
2400psi
What size are the output/input hose ports of the HPU?
1/2” NPT
What is the hydraulic oil capacity of the HPU? Fuel Capacity?
9 gallons both.
HPU Supply hoses must have a minimum working pressure of ____psi.
3000psi.
When operating the HPU in cold weather, allow hydraulic oil to warm up to ____ degrees or higher.
50 degrees F
How often should the hydraulic oil be changed?
Every 250 hours of operation.
What is the proper mixture of the HPU engine coolant?
50/50 ethylene glycol and fresh water. (distilled is preferred.)
When starting the HPU, adjust speed to ____ RPM and let warm up for ___
minutes.
Per OP
1200
3-5min
After HPU warms up, open the Hydraulic flow valve and increase to _____ rpm.
2000rpm per manual
3200rpm per OP
Recommended operating temperature range for the hydraulic diver
tools is ____ to _____ F. Not to exceed _____ degrees.
80-120 not to exceed 140 degrees.
140 will reduce fluid life, 150 will damage equipment seals.
Overheating problems can be controlled in most
situations by _____________ to effect heat exchange.
Placing excess hose in the water.
The diver operated hydraulic cut off switch is located ____ from the tool, and is operated by the secondary diver.
6-8’
When using the hydraulic impact wrench, the correct sockets are _____. Standard sockets are not designed to withstand hydraulic impact.
Black.
Never use a grinding wheel rated at less than _____rpm.
6500rpm. (Grinder manual)
6000rpm (Dive school notes.)
The hydraulic underwater GRINDER operates at a flow range of ___ to ___ gpm.
4-12
CO23 Cut-off Saw uses a ____” cutting wheel. Never use a wheel over ____” in diameter.
10”
While operating the chipping hammer, diver must wear _____ for sound protection. Maximum operating time per tier is ______ per each 24-hour period.
1/4 inch neoprene hood.
3 hours and 40 minutes.
Hydraulic chainsaw uses 3 different bar lengths. What are they?
16” 20” and 24”
What is the flow rate of the GR29 Hydraulic Grinder?
4-12gpm
How much does the GR29 Grinder weigh?
15lbs
What is the max RPM of the GR29 Grinder?
3200rpm @ 12gpm
GR29 should rotate (clockwise/counter-clockwise.)
Counter-clockwise
What is the flow rate of the CO23 Cutoff Saw?
10-15gpm
At the beginning of each shift or when a new cutoff wheel has been installed, run the saw at operating speed for at least ____ before starting work.
1 minute
CO23
Use only cutoff wheels that meet requirements
of _______.
ANSI 87.5.
The hydraulic system should have a minimum of
___ micron filtration.
25
The maximum rated speed of the
cutoff saw is ____ rpm.
3600
The CO23 Cutoff Saw has a flow range of ___ gpm.
10-15
