Enerpac PL200-Series - Manual (Page 8)

8
6.4 Checking Jack Operation Before Use
Before using the jack for the fi rst time, or if the jack has been
in storage for more than 30 days, check the jack operation as
described in the following steps:
1. If not already done, check the oil level in the hydraulic
reservoir. Refer to Section 7.3 for additional information.
2. Verify that the jack is connected to the compressed
air supply, and that the air pressure setting is correct.
Refer to section 5.3 for air pressure requirements and
recommendations.
3. Be sure that the jack air shut-off valve is in the OPEN position.
NOTICE Perform the following step with no load on jack. Refer
to Section 6.3 for pendant control information.
4. Fully extend and retract the cylinder to verify proper
operation. If needed, continue cycling the cylinder until
operation is smooth, and any trapped air has been removed
from the system.
NOTICE The jack will make a “hissing” sound when the air
supply is connected and the air-shutoff valve is in the OPEN
position. This sound is normal, and indicates that the jack
pneumatic system is pressurized.
6.5 Operating Instructions
WARNING
Failure to observe and comply with the following precautions
could result in death or serious personal injury. Load may
become unstable or drop. Property damage could also occur.
• Always lift, support and lower the load in accordance with
all applicable work rules and regulations in eff ect at your
worksite or facility.
• Wait an appropriate amount of time before working under
the load. Any settling of jack base or load supports (if used)
into the ground below must not exceed 1/4 inch [6,4 mm].
If additional settling occurs, lower the load and reposition
jack on solid ground.
BEFORE BEGINNING THE LIFT:
1. Using the handle assembly, adjust the jack position so that
the cylinder load cap is centered under the jacking point of
the load. Be sure that the jack base is positioned on a solid
and level support surface, with the cylinder perpendicular to
the fl oor or ground.
2. After positioning the jack, be sure that both detent pins on
the lower jack handle are fully pulled out (disengaged).
NOTICE Be certain that both detent pins are disengaged before
using jack to lift, support or lower a load. Failure to observe this
precaution may result in damage to the lower handle, wheels, or
axles.
3. If a high jacking point requires a taller jack, install extensions
and/or spacers (optional accessories) on the cylinder as
required. Refer to Section 6.6 for installation instructions and
additional information about extensions and spacers.
4. Place a piece of good quality plywood or other compression
material (approximately 1/4 inch [6,4 mm] thick with high
friction characteristics) between the cylinder load cap
and the jacking point. This will provide a small amount of
cushioning and will also help prevent damage to the jacking
point.
WARNING Jacking at an angle can allow the jack to slip
out of position, resulting in possible loss of load, personal
injury and/or damage to jack. As required, use a swivel load
cap to properly engage an angled lifting point. The slope of
the angled lifting point must not exceed 5 degrees.
TO RAISE THE LOAD:
1. Depress and hold the pendant UP button. The air motor will
start and the cylinder will begin extending.
2. When the load has reached the desired height, release the
pendant UP button. The cylinder will stop and the load will
remain supported.
NOTICE Although the Pow’R-LOCK ™ jack is designed to be a
load holding device, the use of auxiliary stands, blocking or other
additional load supports may be required in your location. Follow
all applicable work rules and regulations in eff ect at your facility
or worksite.
TO LOWER THE LOAD:
WARNING Be careful while lowering to ensure that the
load is lowered evenly, so that load shifting does not occur.
Load shifting could cause instability, which could result in
loss of load and/or failure of the jack. This could cause death,
serious personal injury and/or property damage.
1. Be certain that no persons are working under the load. Alert
all personnel that the load is about to be lowered.
2. Depress and hold the pendant DOWN button. The air motor
will start and the cylinder will advance a slight amount to
raise and release the cylinder lock nut. The cylinder will then
begin to retract.
3. When the load has been lowered to the desired height,
release the pendant DOWN button. The air motor will stop.
AFTER COMPLETING THE JOB:
1. Fully retract the cylinder. Disconnect the air supply hose from
the jack air-shutoff valve.
2. To remove trapped pressure from the jack pneumatic system,
depress and hold the pendant UP button. The air motor may
run for a few seconds but will stop when pressure is relieved.
3. Always store the jack and its accessories in a clean and dry
area, free of moisture and direct sunlight.
NOTICE Always keep a load cap or extension installed in the
top of the cylinder when jack is not in use. This will prevent water
from accumulating inside the recessed area at the top of the
cylinder.
6.6 Stacking Instructions - Extensions and Spacers
Extensions and spacers are available as optional accessories
from your Enerpac authorized distributor. Refer to tables 4 and
5 for additional information.
PLE Series extensions allow the jack's usable lifting height to be
increased up to 9 inches [229 mm] for model PL20025-ASA and
up to 28 inches [711 mm] for model PL20014-ASA.
PLS Series spacers allow additional fi ne adjustment of the usable
lifting height. They may be used alone or in conjunction with
PLE Series extensions. Spacers of 1 and 2 inch [25 and 51 mm]
heights are available.