Enerpac P-392FP User Manual [en, de, fr]
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Hydraulic Technology Worldwide
Instruction Sheet
P-392FP
Hydraulic Foot Pump
EIS 63.107-1 09/2004
1.0 IMPORTANT RECEIVING INSTRUCTIONS
Visually inspect all components for shipping damage.
Shipping damage is not covered by warranty. If shipping
damage is found, notify carrier at once. The carrier is
responsible for all repair and replacement costs resulting from
damage in shipment.
SAFETY FIRST
2.0 SAFETY ISSUES
Read all instructions, warnings and cautions
carefully. Follow all safety precautions to
avoid personal injury or property damage
during system operation. Enerpac cannot be responsible for
damage or injury resulting from unsafe product use, lack of
maintenance or incorrect product and/or system operation.
Contact Enerpac when in doubt as to the safety precautions
and operations. If you have never been trained on highpressure hydraulic safety, consult your distribution or service
center for a free Enerpac Hydraulic safety course.
Failure to comply with the following cautions and warnings
could cause equipment damage and personal injury.
A CAUTION is used to indicate correct operating or
maintenance procedures and practices to prevent damage to,
or destruction of equipment or other property.
A WARNING indicates a potential danger that requires correct
procedures or practices to avoid personal injury.
A DANGER is only used when your action or lack of action
may cause serious injury or even death.
WARNING: Wear proper personal protective gear
when operating hydraulic equipment.
WARNING: Stay clear of loads supported by
hydraulics. A cylinder, when used as a load lifting
device, should never be used as a load holding
device. After the load has been raised or lowered, it must
always be blocked mechanically.
WARNING: USE ONLY RIGID PIECES TO HOLD
LOADS. Carefully select steel or wood blocks that are
capable of supporting the load. Never use a hydraulic
cylinder as a shim or spacer in any lifting or pressing
application.
DANGER: To avoid personal injury keep hands and
feet away from cylinder and workpiece during
operation.
WARNING: Do not exceed equipment ratings. Never
attempt to lift a load weighing more than the capacity
of the cylinder. Overloading causes equipment failure
and possible personal injury. The cylinders are designed for a
max. pressure of 700 bar [10,000 psi]. Do not connect a jack
or cylinder to a pump with a higher pressure rating.
DANGER: Never set the relief valve to a higher
pressure than the maximum rated pressure of the
pump. Higher settings may result in equipment
damage and/or personal injury. Do not remove relief valve.
WARNING: The system operating pressure must not
exceed the pressure rating of the lowest rated
component in the system. Install pressure gauges in
the system to monitor operating pressure. It is your window to
what is happening in the system.
CAUTION: Avoid damaging hydraulic hose. Avoid
sharp bends and kinks when routing hydraulic hoses.
Using a bent or kinked hose will cause severe backpressure. Sharp bends and kinks will internally damage the
hose leading to premature hose failure.
Do not drop heavy objects on hose. A sharp impact
may cause internal damage to hose wire strands.
Applying pressure to a damaged hose may cause it to
rupture.
IMPORTANT: Do not lift hydraulic equipment by the
hoses or swivel couplers. Use the carrying handle or
other means of safe transport.
CAUTION: Keep hydraulic equipment away from
flames and heat. Excessive heat will soften packings
and seals, resulting in fluid leaks. Heat also weakens
hose materials and packings. For optimum performance do
not expose equipment to temperatures of 65 °C [150 °F] or
higher. Protect hoses and cylinders from weld spatter.
DANGER: Do not handle pressurized hoses.
Escaping oil under pressure can penetrate the skin,
causing serious injury. If oil is injected under the skin,
see a doctor immediately.
Index:
English . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
Français . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-9
Deutsch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-14
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WARNING: Only use hydraulic cylinders in a coupled
system. Never use a cylinder with unconnected
couplers. If the cylinder becomes extremely
overloaded, components can fail catastrophically causing
severe personal injury.
WARNING: BE SURE SETUP IS STABLE BEFORE
LIFTING LOAD. Cylinders should be placed on a flat
surface that can support the load. Where applicable,
use a cylinder base for added stability. Do not weld or
otherwise modify the cylinder to attach a base or other
support.
Avoid situations where loads are not directly centered
on the cylinder plunger. Off-center loads produce
considerable strain on cylinders and plungers. In
addition, the load may slip or fall, causing potentially
dangerous results.
Distribute the load evenly across the entire saddle
surface. Always use a saddle to protect the plunger.
IMPORTANT: Hydraulic equipment must only be
serviced by a qualified hydraulic technician. For repair
service, contact the Authorized ENERPAC Service
Center in your area. To protect your warranty, use only
ENERPAC oil.
WARNING: Immediately replace worn or damaged
parts by genuine ENERPAC parts. Standard grade
parts will break causing personal injury and property
damage. ENERPAC parts are designed to fit properly and
withstand high loads.
CAUTION: Always use the handle to carry the pump.
Carrying the pump by the hose may damage the hose
and/or the pump.
3.0 DESCRIPTION
The P-392FP is a two-speed pump which can be used to
power single-acting cylinders and tools with an oil capacity up
to 490 cm3. It has an internal pressure relief valve for overload
protection. For dimensions see Figure 1. Figure 2 shows the
specifications of the pump.
WARNING: The P-392FP is operated with a nonvented reservoir. If the reservoir is subjected to
high pressure, the casing may rupture, causing
personal injury and/or equipment damage. NEVER
attempt to return more oil to the reservoir than it is
capable of holding.
4.0 INSTALLATION
4.1 Connecting the Pump
1. Thread hose into pump outlet. Use 1 1/2 wraps of Teflon tape
(or suitable thread sealant) on hose fitting, leaving the first
complete thread free of tape to ensure that tape does not
shed into hydraulic system, causing damage. Trim loose
ends.
2. Install a pressure gauge in-line from the pump for added
safety and better control.
3. Connect the hose(s) to your cylinder or tool.
NOTE: For single-acting cylinders, connect one hose from
the pump to the cylinder. For double-acting cylinders,
connect two hoses. Connect one hose from the pressure
port of the pump to the pressure port of the cylinder.
Connect another hose from the retract port of the pump to
the retract port of the cylinder.
4.2 Pump Venting
The P-392FP is operated with a non-vented reservoir. If the
reservoir is subjected to high pressure, the casing may
rupture, causing personal injury and/or equipment damage.
NEVER attempt to return more oil to the reservoir than it is
capable of holding.
5.0 OPERATION
5.1 Before Using the Pump
1. Check all system fittings and connections to be sure they
are tight and leak free.
2. Check oil level in reservoir before operating pump. See
paragraph 7.1 "Adding Oil to the Pump" on page 3.
CAUTION: NEVER add extensions to pump handle.
Extensions cause unstable pump operation.
WARNING: In certain situations the pump handle
can "kick back". Always keep your body to the side
of the pump, away from the line of force of the
handle.
NOTE: To reduce handle effort at high pressure, take short
strokes. Maximum leverage is obtained in the last 5° of stroke.
Release valve
FIGURE 2 - SPECIFICATIONS
Figure 1
Single-
Acting
Usable Oil
Capacity
cm
3
[in3]
Used
with
cylinder
Pressure Rating
bar [psi]
Model
Number
Oil Displacement
per Stroke
cm3 [in3]
Max.
Handle
Effort
kg
[lbs]
Piston
Stroke
mm
[inch]
1ststage 1ststage 2ndstage 2ndstage
kg
[lbs]
492
[30]
15
[220]
700
[10,000]
11,26
[.687]
2,47
[.151]
42
[93]
25,4
1.00
7,0
[15.4]
P-392FP
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30 [1.18"]
600 mm [23.6 inch]
3/8"-18NPT
52 [2.04"]
504 [19.8"]
193 [7.60"]
433 [17.05"]
187 [7.36"]
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5.2 Using Two-Speed Pumps
These pumps provide 2-stage flow. Under no-load, the pump
operates in the high flow first stage for rapid advance. When
the load is contacted, the pump automatically shifts to the
second stage for building pressure.
NOTE: For best performance, operate pump handle at
moderate speed during the high flow first stage. Rapid handle
speed in the first stage will prevent the pump from delivering
full volume of oil.
5.3 Single-Acting Applications with Release Valve
1. Close release valve by turning clockwise, as shown in
Figure 3.
CAUTION: Close release valve finger tight ONLY.
Using tools on release valve can damage it and
cause the pump to malfunction.
2. Operate pump handle to deliver hydraulic power to system.
Pressure will be maintained until release valve is opened.
3. Open release valve (turn counter-clockwise) to release
pressure, allowing oil to flow back to the reservoir.
5.6 Relief Valve Adjustment
All pumps contain a factory set relief valve to prevent overpressurization of the system. Lower pressure settings can be
obtained. Contact your Authorized Enerpac Service Center.
6.0 AIR REMOVAL
Removing air from the hydraulic system will help the cylinder to
advance and retract smoothly (see figure 4).
6.1 Pump With Single-Acting Cylinder (A)
1. Vent pump reservoir (for vented pumps only) and close
release valve.
2. Position pump at higher elevation than cylinder.
3. Position cylinder with the plunger end down (up if using pull
cylinder). See Figure 4 below.
4. Operate pump to fully extend the cylinder (retract if using
pull cylinder).
5. Open release valve to retract cylinder (extend if a pull
cylinder). This will force the trapped air to move up to the
pump reservoir.
6. Repeat the above steps as necessary.
7. Add oil if necessary. See paragraph 7.1 (page 3)
8. Return vent/fill cap to operating position.
7.0 MAINTENANCE
Use only Enerpac hydraulic oil with these pumps to promote
long pump life and to protect your warranty. Viton and EPR seal
kits are available for some hand pumps. Contact your Enerpac
representative for more information
7.1 Adding oil to pump
Check oil level regularly.
WARNING: Always add oil with cylinders fully
retracted (extended if pull cylinders) or the system
will contain more oil than the reservoir can hold.
1. Remove vent/fill cap from reservoir.
2. Fill reservoir only to level mark shown on pump.
3. Remove air from system if necessary. See page 6. Recheck
oil level after removing air.
4. Return vent/fill cap to proper position.
NOTE: Non-vented hand pumps require air in the reservoir to
function properly. If the reservoir is completely filled, a vacuum
will form preventing oil from flowing out of the pump.
7.2 Keeping Oil Lines Clean
When coupler halves are disconnected, always screw on dust
caps. Use every precaution to guard unit against entrance of
dirt because foreign matter may cause pump, cylinder, or
valve failure.
7.3 Lubricating the Pump
To extend pump life and improve performance, lubricate the
beam pin (A), cross pin (B), and piston head (C) regularly, using
roller bearing grease. See Figure 5 on page 4.
Release valve
Figure 3
AIR
Figure 4
4
1. Cylinder does not advance,
advances slowly, or advances
in spurts.
1. Oil level in pump reservoir is
low.
2. Release valve open.
3. Loose hydraulic coupler.
4. Load is too heavy.
5. Air trapped in system.
6. Cylinder plunger binding.
1. Add oil according to the Maintenance
instructions on page 3 (paragrapgh 7.1).
2. Close the release valve.
3. Check that all couplers are fully tightened.
4. Do not attempt to lift more than rated tonnage.
5. Remove air according to the instructions on
page 3 (paragraph 6.0).
6. Check for damage to cylinder. Have cylinder
serviced by a qualified hydraulic technician.
1. Leaking connection.
2. Leaking seals.
3. Internal leakage in pump.
1. Check that all connections are tight and leak
free.
2. Locate leak(s) and have equipment serviced by
a qualified hydraulic technician.
3. Have pump serviced by a qualified hydraulic
technician.
3. Cylinder does not retract,
retracts part way, or retracts
more slowly than normal..
1. Release valve closed.
2. Pump reservoir is over-filled.
3. Loose hydraulic coupler.
4. Air trapped in system.
5. Hose internal diameter too
narrow.
6. Cylinder retraction spring
broken or other cylinder
damage.
1. Open release valve.
2. Drain oil level to full mark. See page 3
instructions for adding oil (paragrapg 7.1).
3. Check that all couplers are fully tightened.
4. Remove air according to the instructions on
page 3 (paragraph 6.0).
5. Use larger diameter hydraulic hose.
6. Have cylinder serviced by a qualified hydraulic
technician.
2. Cylinder advances, but does
not hold pressure.
Problem Possible Cause Solution
8.0 TROUBLE SHOOTING
7.4 Changing the Oil
1. Drain all oil and refill with clean Enerpac oil every 12
months. If pump is used in dirty environments, change the
oil more often.
2. Remove vent/fill cap or plug from reservoir.
3. Tilt pump to drain out old oil.
4. Fill reservoir only to level mark shown on pump.
5. Replace the vent/fill cap or plug.
6. Dispose of used oil properly.
8.0 TROUBLESHOOTING GUIDE
The following information is intended as an aid in determining
if a problem exists. For repair service, contact the Authorized
Enerpac Service Center in your area.
A
B+C
Figure 5
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Hydraulic Technology Worldwide
Fiche d’instructions
P-392FP
Pompe à pied
EIS 63.107-1 09/2004
1.0 INSTRUCTIONS IMPORTANTES RELATIVES À LA
RÉCEPTION
Inspecter tous les composants pour vous assurer qu’ils n’ont
subi aucun dommage en cours d’expédition. Les dommages
subis en cours de transports ne sont pas couverts par la
garantie. S’ils sont abîmés, aviser immédiatement le
transporteur, qui est responsable des frais de réparation et de
remplacement résultant de dommages en cours de transport.
LA SÉCURITÉ AVANT TOUT !
2.0 SÉCURITÉ
Lire attentivement toutes les instructions et
mises en garde et tous les avertissements.
Suivre toutes les précautions pour éviter
d’encourir des blessures personnelles ou de provoquer des
dégâts matériels durant le fonctionnement du système.
Enerpac ne peut pas être tenue responsable de dommages ou
blessures résultant de l’utilisation risquée du produit, d’un
mauvais entretien ou d’une application incorrecte du produit et
du système. En cas de doute sur les précautions ou les
applications, contacter Enerpac.
Respecter les mises en garde et avertissements suivants sous
peine de provoquer des dégâts matériels et des blessures
corporelles.
Une mise en garde ATTENTION sert à indiquer des
procédures d’utilisation et de maintenance correctes qui
visent à empêcher l’endommagement voire la destruction du
matériel ou d’autres dégâts.
Un AVERTISSEMENT indique un danger potentiel qui exige la
prise de mesures particulières visant à écarter tout risque de
blessure.
La mention DANGER n’est utilisée que lorsqu’une action ou
un acte de négligence risque de causer des blessures graves,
voire mortelles.
AVERTISSEMENT: Porter un équipement de
protection personnelle adéquat pour utiliser un
appareil hydraulique.
AVERTISSEMENT : Rester à l’écart de charges
soutenues par un mécanisme hydraulique. Un
vérin, lorsqu’il est utilisé comme monte-charge, ne
doit jamais servir de support de charge. Après avoir monté ou
abaissé la charge, elle doit être bloquée par un moyen
mécanique.
AVERTISSEMENT : UTILISER SEULEMENT DES
PIÈCES RIGIDES POUR SOUTENIR LES
CHARGES. Sélectionner avec précaution des blocs
d’acier ou de bois capables de supporter la charge. Ne jamais
utiliser un vérin hydraulique comme cale ou intercalaire
d’appui pour les applications de levage ou de pressage.
DANGER: Pour écarter tout risque de blessure
personnelle, maintenir les mains et les pieds à
l’écart du vérin et de la pièce à usiner durant
l’utilisation.
AVERTISSEMENT: Ne pas dépasser les valeurs
nominales du matériel. Ne jamais essayer de soulever
une charge d’un poids supérieur à la capacité du
vérin. Une surcharge entraînera la panne du matériel et risque
de provoquer des blessures corporelles. Les vérins sont
conçus pour une pression maximale de 700 bar. Ne pas
connecter de cric ou de vérin à une pompe affichant une
pression nominale supérieure.
AVERTISSEMENT: Ne jamais régler la soupape de
sûreté à une pression supérieure à la pression
nominale maximale de la pompe sous peine de
provoquer des dégâts matériels et/ou des blessures
corporelles. Ne pas retirer le limiteur de pression.
AVERTISSEMENT: La pression de fonctionnement
du système ne doit pas dépasser la pression
nominale du composant du système affichant la plus
petite valeur. Installer des manomètres dans le système pour
surveiller la pression de fonctionnement. Ils permettent de
vérifier ce qui se passe dans le système.
ATTENTION: Éviter d’endommager les tuyaux
hydrauliques. Éviter de les plier et de les tordre en les
mettant en place. Un tuyau plié ou tordu entraînera un
fort retour de pression. Les plis et coudes prononcés
endommageront par ailleurs l’intérieur du tuyau, provoquant
son usure précoce.
Ne pas faire tomber d’objets lourds sur le tuyau.
Un fort impact risque de causer des dégâts intérieurs
(torons métalliques). L’application d’ une pression sur
un tuyau endommagé risque d’entraîner sa rupture.
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