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Instruction Manual 

DPA-75 Air Hyd. Power Unit - V1.4 

www.durapac.com 

Page 2 of 10 

 

 

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 

1.0

 

Product Information 

DURAPAC – Reciprocating Air Hydraulic Power Units are engineered to meet Industrial Standards for 
Performance and Safety. The DPA-75 model’s unique hydraulic circuit allows the quick displacement 
of hydraulic fluid under no load conditions and easy pumping in loaded conditions. These air 
actuated power units supply compressed hydraulic fluid to a compatible single-acting cylinder, 
anywhere that 700 bar of fluid pressure is needed.  

 

7.5 L usable oil reservoir 

 

3 position treadle for adv/hold/retract functions 

 

Dust cover protection for the release control valve 

 

Release detent function enhances productivity 

 

Convenient carry handle included 

 

Recommended air pressure range 4-12 bar 

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 power unit’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 power unit 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 power unit 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. 

 

DANGER: 

 

 

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

Summary of Contents for DPA-75

Page 1: ...D 2 186 Granite Street GEEBUNG QLD 4034 Australia sales absoluteequipment com au Phone 61 7 3865 4006 Fax 61 7 3102 6288 Maximum Operating Pressure 700 bar Instruction Manual Reciprocating Air Hydraulic Power Unit Model DPA 75 ...

Page 2: ...lity 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 power unit that appears to be damaged in any way is worn leaking or operates abnormally should be removed from service...

Page 3: ...o 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 ...

Page 4: ... 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 a...

Page 5: ... all system fittings and connections to be sure they are tight and leak free 4 6 Check oil level in reservoir before operating power unit 5 0 Operation IMPORTANT Always monitor pressure load or position using suitable equipment Pressure may be monitored by means of an optional manifold and gauge Load may be monitored by means of a load cell and digital indicator Correct application position can on...

Page 6: ...rt sand etc will quickly ruin any hydraulic system Ensure that couplings are clean and free of foreign matter After each use clean couplings and attach dust caps Maintenance is required when wear or leakage is noticed Periodically inspect all components to detect any problem that may require service and maintenance 6 1 Adding Hydraulic Fluid WARNING Always add oil with cylinders fully retracted or...

Page 7: ... accordance with local regulations 6 4 Lubrication When power unit is operated on a daily basis it is recommended that an inline oiler and air dryer is installed and SAE grade oil 5W to 30W is used 6 5 Storage 6 5 1 When not in use depressurise and disconnect the hydraulic power unit from the application 6 5 2 Wipe clean thoroughly and store in a clean dry environment Avoid temperature extremes 6 ...

Page 8: ...ng application connection Replace application connection Application responds slower than normal Loose connection or coupler Tighten connection or coupler Restricted hydraulic line or fitting Clean and replace if damaged Leaking application connection Replace application connection Application does not return fluid to power unit i e cylinder will not retract Malfunctioning coupler damaged applicat...

Page 9: ...r Hyd Power Unit V1 4 www durapac com Page 9 of 10 8 0 Parts Breakdown Note Not all components of the power unit are replacement items but are illustrated as a convenient reference of location and position in the assembly sequence ...

Page 10: ...57 Screw ZBN1072 6 18 Steel ball block ZBN1044 1 58a Shipping plug red ZBN1073 1 19 Steel ball ZBN1045 1 58b Air vent plug black ZBN1167 1 20a Special washer ZBN1046 1 59 Compressing spring ZBN1074 1 20b Special washer 1 60 Screw ZBN1075 1 21 High pressure valve 1 61 Compressing spring ZBN1076 1 22 Nail 1 62 Steel ball block ZBN1077 1 23 Compressing spring 1 63 Steel ball ZBN1078 1 24 Pressure adj...

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