Durapac RFJ Series, RFJ-50, RFJ-200, RFJ-300, RFJ-100 Instruction Manual

Instruction Manual

Single Acting Hydraulic, Low Height, Flat
Cylinders – RFJ Series and Stack Plate Kits

Maximum Operating Pressure – 700 bar

ABSOLUTE EQUIPMENT PTY LTD – 2/186 Granite Street, GEEBUNG QLD 4034 – Australia

sales @abso l utee q uipme nt.co m .au – P hone: [phone] – Fax: + 61 7 3102 6288

Instruction Manual

This is a safety alert symbol. It is used to alert you to potential personal injury hazards.
Obey all safety messages that follow this symbol to avoid injury or death

DANGER:

 If using cylinder stack plate kits, do NOT exceed the number of plates in the supplied

kit. Do NOT combine kits to gain extra height

1.0 Product Information

DURAPAC – Hydraulic Cylinders are engineered to meet ANSI/ASME B30.1 Standards for
Performance and Safety. The RFJ-Series is a single acting, spring return, low height, flat design
cylinder for use in narrow spaces and areas with low overhead clearance. They can be used in
maintenance, machinery levelling, construction and mining applications.

All RFJ Series cylinders feature a hard chrome cylinder bore and piston rod for maximum corrosion­resistance and bronze overlay piston bearing area to resist side load induced damage. Mounting
holes are standard on all models and a grooved piston rod end improves load grip.

Cylinder Stack Plate Kits are an effective economical solution where an extra increase in closed
height is desirable. They are designed for use with the RFJ Series flat cylinders and incorporate a
magnet to attach to the cylinder. All kits include an RFJ cylinder and carry case.

Special skill, knowledge and training may be required for a specific task and the product may not be
suitable for all jobs. The user must ultimately make the decision regarding suitability of the product
for any given task and assume the responsibility of safety for all in the work area. Contact a Durapac
representative if you are unsure of your cylinder’s suitability for a particular application.

2.0 Receiving Instructions

It is recommended prior to use that an inspection be done by qualified personnel and that any
missing or damaged parts, decals, warning/safety labels or signs are replaced with Durapac
authorised replacement parts only. Any cylinder or stack plate that appears to be damaged in any
way, is worn, leaking or operates abnormally should be removed from service immediately until such
time as repairs can be made. Any cylinder or stack plate that has been or suspected to have been
subject to a shock load should be removed from service immediately until inspected by a Durapac
authorised service centre. Owners and operators of this equipment should be aware that the use
and subsequent repair of this equipment may require specialised training and knowledge.

3.0 Safety

Save these instructions. For your safety, read and understand the information contained within. The
owner and operator should have an understanding of this product and safe operating procedures
before attempting to use this product. Instructions and safety information should be conveyed in the
operator's native language before use of this product is authorised. Make certain that the operator
thoroughly understands the inherent dangers associated with the use and misuse of the product. If
any doubt exists as to the safe and proper use of this product as outlined in this factory authorised
manual, remove from service immediately.

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Instruction Manual

 To avoid personal injury keep hands and feet away from work area during operation

 Do NOT handle pressurised hoses. Escaping oil under pressure can penetrate the skin

causing serious injury. If oil is injected under the skin, see a doctor immediately

 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 supported mechanically

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

 Always wear appropriate personal protective equipment (PPE) when operating

hydraulic equipment. The operator must take precaution against injury due to failure
of the tool or work piece(s)

 Do NOT hold or stand directly in line with any hydraulic connections while pressurising

 Do NOT attempt to disconnect hydraulic connections under pressure. Release all line

pressure before disconnecting hoses

 All personnel must be clear before lowering load or depressurising the system

 Do NOT attempt to lift a load weighing more than the capacity of the cylinder

IMPORTANT:

 If at any stage, the safety related decals become hard to read, these must be replaced

 Minimum age of the operator must be 18 years. The operator must have read and

understood all instructions, safety issues, cautions and warnings before starting to
operate the equipment. The operator is responsible for this activity towards other
persons

 Do NOT lift hydraulic equipment by the hoses or couplers. Use the carrying handle or

other means of safe transport

 Hydraulic equipment must only be serviced by a qualified hydraulic technician. For

repair service, contact the Durapac authorised service centre in your area. To protect
your warranty, use only high quality hydraulic oil

CAUTION:

 KEEP HYDRAULIC EQUIPMENT AWAY FROM FLAMES AND HEAT. Hydraulic fluid can

ignite and burn. 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 all equipment
from weld spatter

 No alteration should be made to this device

3.1 Hydraulic Cylinders

 To avoid personal injury and possible equipment damage, make sure all hydraulic

components withstand the maximum pressure of 700 bar (10,000psi)

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Instruction Manual

 Do NOT overload equipment. Overloading can cause equipment failure and possible

personal injury

 This device is not suitable for use as a support device! As the system load is lifted,

use blocking and cribbing to guard against a falling load

 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 centred on the cylinder piston. Off-

centre loads produce considerable strain on cylinder and pistons. 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 piston (if one is provided)

 USE ONLY RIGID PIECES TO HOLD LOAD. 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

 Never pressurise uncoupled couplers. Only use hydraulic equipment in a coupled

system

3.2 Hydraulic Hoses & Fluid Transmission Lines

 Avoid short runs of straight line tubing. Straight line runs do not provide for

expansion and contraction due to pressure and/or temperature changes

 Reduce stress in tube lines. Long tubing runs should be supported by brackets or

clips. Before operating the pump, connections should be tightened securely and
leak-free. Over tightening can cause premature thread failure or high pressure
fittings to burst

 Should a hydraulic hose ever rupture, burst or need to be disconnected,

immediately shut off the pump and release all pressure. Never attempt to grasp a
leaking pressurised hose with your hands. The force of escaping hydraulic fluid can
inflict injury

 Do NOT subject the hose to potential hazard such as fire, sharp objects, extreme

heat or cold or heavy impact

 Do NOT allow the hose to kink, twist, curl, crush, cut or bend so tightly that the fluid

flow within the hose is blocked or reduced. Periodically inspect the hose for wear

 Hose material and coupler seals must be compatible with the hydraulic fluid used.

Hoses also must not come in contact with corrosive materials such as battery acid,
creosote-impregnated objects and wet paint. Never paint a coupler or hose

FAILURE TO HEED THESE WARNINGS MAY RESULT IN PERSONAL INJURY AS WELL AS PROPERTY DAMAGE.

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