BVA Hydraulics HU7504 Manual De Instrucciones página 4

Aluminum Cylinders Spec.(in)
Cylinder
Model Stroke
Capacity
Numbers (in)
(tons)
HU7504 4.0
75
HU7506 6.0
HU10002 2.0
HU10004 4.0
100
HU10006 6.0
HU10008 8.0
HU10010 10.0
HU15002 2.0
HU15004 4.0
150
HU15006 6.0
HU15008 8.0
HU15010 10.0
OPERATION
Operate the hydraulic pump to advance and retract the cylinder.
Do not continue pumping when cylinder is fully extended. Internal
pressure will build up and may damage the seal of the cylinder.
!
WARNING: NEVER rely on hydraulic pressure alone to
secure a load! NEVER allow personnel to work or pass under
a load until the load is secured by cribbing, blocking, or other
mechanical means.
!
WARNING: To help prevent material fatigue if the cylinder
is to be used in a continuous application, the load should not
exceed 85% of the rated capacity.
!
WARNING: Your cylinder, hose(s), couplings and pump all must
be rated for the same maximum operating pressure, correctly
connected and compatible with the hydraulic fluid used. An
improperly matched system can cause the system to fail.
!
WARNING: All personnel must be clear before lowering load.
MAINTENANCE
1. Inspect hoses and connections daily. Replace damaged
components immediately with BVA Hydraulics Replacement
Parts only.
2. Tighten connections as needed. Use pipe thread sealing
compound when servicing connections.
3. Always use clean, approved hydraulic fluid and change as
recommended or sooner if the fluid becomes contaminated
(never exceed 400 hours). Follow pump manufacturers
instructions for changing and adding hydraulic fluid. Use only
good quality hydraulic fluid. We recommend BVA FJZ01 or
equivalent when using with hand pump, air pump, or electric
pump. Never use brake fluid, transmission fluid, turbine oil,
motor oil, alcohol, glycerin etc. Use of other than good quality
hydraulic oil will void warranty and damage the cylinder, pump,
hose etc.
4. Use an approved, high-grade pipe thread sealant to seal all
hydraulic connections. Teflon tape can be used if only one layer
of tape is used and it is applied carefully (two threads back) to
prevent the tape from being introduced into hydraulic system. A
piece of tape could travel through the system and obstruct the
flow of fluid and adversely affect function.
Cylinder
Oil Collapsed
Effective
Capacity Height
Area
(in ) (in)
3
(in )
2
60.1 8.73
15.0
90.2 10.73
41.2 6.73
82.5 8.73
20.7
123.7 10.73
164.9 12.73
206.0 14.73
61.4 7.73
122.7 9.73
30.7
184.1 11.73
245.6 13.73
306.8 15.73
Cylinder
Extended Outside
Bore
Height Dia.
Dia.
(in) (in)
(in)
12.73
6.5 4.37
16.73
8.73
12.73
8.0 5.10
16.73
20.73
24.73
9.73
13.73
10.0 6.26
17.73
21.73
25.73
Lubrication & Cleaning
Keep cylinder clean at all times.
1. Any exposed threads (male or female) must be cleaned and
lubricated regularly, and protected from damage. Lubricate with
light machine oil.
2. If a cylinder or ram has been exposed to rain, snow, sand,
airborne abrasive, or any corrosive environment, it must be
cleaned, lubricated, and protected immediately after exposure.
Daily clean exposed ram with clean cloth dampened with light
machine oil. Protect exposed ram from the elements at all times.
3. Keep the hydraulic system as free of dirt as possible. When
not in use, couplers must be sealed with dust covers. All hose
connections must be free of dirt and grime. Any equipment
attached to the cylinder must be kept clean.
Storage
Cylinders should be stored vertically with ram plunger fully retracted
in a dry, protected area, not exposed to corrosive vapor, dust or
other harmful elements. When a cylinder has not been used for
a period of 4 months, it should be connected to a pump and fully
extended and then retracted a minimum of 5 times. This cycle will
lubricate the cylinder wall, reducing the possibility of corrosion and
damage thereof.
How to remove faulty coupler:
If cylinder does not retract,
1. Secure load by other means.
2. Depressurize pump and hose.
3. Remove the cylinder from application.
4. Disconnect and replace with new coupler.
4
Plunger Base to Saddle
Dia. Adv. Port Dia.
(in) (in) (in)
3.88 3.0
4.30 3.5
1.50
5.00 4.5
Weight
(lbs)
29.0
35.0
36.0
43.0
51.0
60.0
68.0
55.0
68.0
81.0
95.0
112.0