The TEHMA PP700-E/S is a high-pressure hydraulic power pack designed for use with high-pressure hydraulic tools and cylinders. It can be powered by either a 2.2-kW electric motor (PP700-E) operating at 230V/110V single phase 50Hz or 120V single phase 60Hz, or by a 3.6-kW petrol engine (PP700-S). The hydraulic pressure can reach up to 700 bar and is adjustable via an integrated relief valve. The power pack features a high-quality pump and other hydraulic components chosen for optimal performance, robustness, and longevity. Engine acceleration is manual.
Typical Applications:
The PP700-E/S is suitable for powering a variety of high-pressure hydraulic tools and equipment, including:
- Rescue tools
- Lifting cylinders
- Railroad maintenance tools
- Concrete crackers
- Demolition tools
- Hydraulic rock splitting tools
- Any equipment operating at pressures up to 700 bar.
Accessories:
Standard accessories include:
- Hydraulic high-pressure hoses (5m/10m length) with quick couplers.
- High-pressure male quick coupler (3/8" NPT thread).
- High-pressure female quick coupler (3/8" NPT thread).
Sound Power Level:
Measured in accordance with Directive 2000/14/EC:
- Average sound pressure: 76 dB(A) (230V) / 75 dB(A) (110V) / 77 dB(A) (S)
- Sound power level (LWA): 96 dB(A) (230V) / 95 dB(A) (110V) / 97 dB(A) (S)
- Guaranteed acoustic power (LwAG): 99 dB(A) (230V) / 98 dB(A) (110V) / 100 dB(A) (S)
- Maximum acceptable power level LwAG: 101 dB(A)
Technical Characteristics:
General View – Main Components and Their Functions:
- FRAME: Constructed from robust steel tubes, equipped with wheels, rubber feet, handles, and a lifting hook for easy transport and positioning.
- MOTOR:
- Electric (PP700-E): 2.2 kW, 230V/110V single phase (50Hz/60Hz). Includes a main switch and RCBO protection.
- Petrol (PP700-S): 3.6 kW. Features a starter handle and ON/OFF switch.
- COOLING SYSTEM: Utilizes an impeller for efficient cooling.
- "MAXIMUM PRESSURE" VALVE: Adjusts and controls the maximum hydraulic pressure in the circuit, protecting tools from damage due to excessive pressure.
- "CUT-OFF" VALVE: Releases pressure when it approaches its limit, preventing the unit and connected tools from operating at unnecessary maximum effort.
- Note: Both valves (4 and 5) are factory-adjusted by TEHMA to the maximum working pressure acceptable by its tools. Their regulation screws must be secured by locknuts to prevent changes due to vibration.
- HYDRAULIC OIL TANK: Has a capacity of 4 liters and houses the high-pressure pumps.
- LIFTING HANDLE: Facilitates moving the machine.
View of the Control Valve Block:
The valve plate integrates all hydraulic control components, machined from two laminated aluminum blocks.
- OIL FILTER: For the hydraulic circuit.
- PRESSURE GAUGE: Centrally positioned for pressure readings.
- ON/OFF FLOW LEVER: Controls the distribution valve that delivers oil to tools. The central position is OFF (tools are still) and should be used before starting and shutting off the motor.
- Two Positions Hydraulic Control Valve:
- LEFT POSITION: Pressure output from the circuit.
- CENTRAL POSITION OFF: Pressure in hold/stop/neutral, also the engine starting position.
- QUICK COUPLING – PRESSURE LINE
- QUICK COUPLING – RETURN LINE
Weight and Dimension:
- Weight (dry): 59 Kg (E) / 57.5 Kg (S)
- Height: 49.5 cm
- Length: 86 cm
- Width: 42.5 cm
Hydraulic Characteristics:
- Pressure min-max: 210-700 bar (regulated by TEHMA for its hydraulic tools).
- Flow max: 9 l/min
- Oil tank capacity: 4 liters
- Control valve type: 2 positions
- Pump type: 2 PISTON PUMPS / 1 GEAR PUMP
Standard Hydraulic Hoses Characteristics:
- Hoses dimension: Thermoplastic twin hose set - 1/4" - Working pressure 700 bar.
- Length: 5 m / 10 m
- Terminal threads: 3/8"NPT
Hydraulic Oil:
- Viscosity at lower expected ambient temperature: max 68 cSt (9°E)
- Viscosity at higher expected ambient temperature: min. 22 cSt (3.10°E)
- Caution: Never use Estheri Phosphoric oils as they are extremely toxic and aggressive. Mixing with these oils can damage the power pack or tools.
- The oil level must always be visible from the level eye.
Usage Features:
Safety Rules:
- Always ensure the connected tool or cylinder is rated for 700 bar or the regulated pressure from the power pack.
- Wear appropriate PPE: hard-helmet, safety goggles, gloves, safety shoes, ear protection, and a dust mask if required.
- Gloves are crucial as high-pressure oil can cause severe skin injury if the tool is damaged.
- Wear tight-fitting clothes; avoid short trousers or t-shirts. Secure long hair to prevent entanglement.
- Always prepare a working plan to foresee and avoid dangerous situations.
- Position the power pack on a stable, level, visible surface, protected from traffic.
- When transporting, secure the power pack to prevent movement or overturning.
- Work only in good physical and mental condition, maintaining maximum attention.
- Avoid working on unstable supports. Use approved stable supports for elevated positions.
- Maintain balance and avoid leaning against the tool in difficult positions.
- Ensure equipment is in perfect working order, free of oil leaks.
- Keep protection devices in good condition and safety stickers legible.
- Familiarize yourself with the working area. Use signals and flashing lights when working near roads.
- Operate engines outdoors or in well-ventilated areas to avoid inhaling exhaust gases.
- Exercise extreme caution near energized electric lines, gas/water pipes, telephone lines, or buried cables.
- Keep the working area clear of obstacles.
- Keep unauthorized personnel away from the work area.
- Ensure clear exit routes in confined spaces.
- Prevent vehicles or people from passing over hoses or cables.
- Connect tools to the power pack before starting the engine.
- Keep the manual and enclosures accessible for future reference.
- Danger: Modifying the calibration of the "MAXIMUM PRESSURE" and "CUT-OFF" valves can pose serious risks. Only proceed if strictly necessary and after verifying tool pressure limits. Maximum pressure must not exceed 700 bar. TEHMA is not responsible for damages resulting from unauthorized pressure adjustments or improper use.
What Not To Do:
- Do not use the power pack or tool if there's a risk of contact with energized electric lines or pressurized pipes.
- Do not start or use in closed, unventilated rooms. Be aware of strange odors indicating dangerous gases.
- Do not start if damaged, leaking oil, or missing/wrongly installed parts.
- Do not allow untrained personnel or those who haven't read the manual to use the equipment.
- Do not work if not in perfect physical and mental condition.
- Avoid working alone if possible.
- Do not rely on verbal warnings in noisy environments; ensure understanding.
- Do not point the tool at colleagues.
- Do not keep your face too close to the tools.
- Do not refuel while smoking.
- Do not refuel or add oil to a hot engine. Use clean, appropriate containers.
- Keep the power pack away from flammable materials and avoid environments with vapors or unknown odors.
- Do not attempt repairs unless qualified. Improper repairs or parts can create dangerous situations.
- Do not perform checks or touch the power pack with bare hands while the engine is running. Always stop the engine and allow it to cool.
- Do not pull the flexible hoses to reposition the power pack; use the handles.
- Do not lift the power pack alone for loading/unloading.
Before Working (Pre-use Checks):
These checks should be performed every time the power pack is used after inactivity or by different operators.
- Check engine oil level (cold engine, horizontal position).
- Check fuel level; ensure enough fuel for the job. DO NOT FILL WITH STARTED ENGINE.
- Check hydraulic oil level; fill with compatible oil if necessary. Ensure oil is visible in the level eye. Follow cold start instructions in very cold temperatures.
- Verify compatibility between the tool and power pack hydraulic characteristics.
- Clean the power pack, especially the cooler, using compressed air if needed. Clean the cooler's air intake.
- Ensure all equipment is complete and efficient, with no oil leaks and all screws, joints, and plugs tightened.
Start and Use:
- Protect the power pack from bad weather and extreme temperatures. Store in a dry, warm place when not in use.
- Cold Start (for viscous oil in bad weather):
- Use hydraulic oil with the correct viscosity (refer to chart).
- After connecting hoses and tool, start the engine at minimum RPM for a few minutes until the oil tank warms to touch.
- Power Pack Positioning:
- Place on a flat, stable, visible surface, protected from traffic. Keep flammable objects away, especially from the discharge side.
- Lay hoses tidily, avoiding knots, tangles, and preventing vehicles from passing over them.
- Do not operate the power pack on trucks; place it on the ground. If on a vehicle, ensure it's far from the sides for proper air circulation and exhaust gas dissipation.
- Important: If hydraulic oil, lubricant, or fuel spills, clean it immediately with sawdust or rags to prevent accidents and ground contamination.
- Connection of Flexible Hoses and Hydraulic Tool:
- Lay hoses to avoid contact with mud or dirt.
- Place the tool on the ground, ensuring it's in perfect condition with efficient accessories. Verify the tool's control valve/trigger is free and released (OFF) to prevent accidental activation.
- Connect flexible hoses to the power pack (engine and flow control lever must be OFF) and then to the tool.
- Start the power pack engine and allow it to warm up (if not done previously).
- Warning: If a hose full of oil is left in the sun, oil expansion can increase pressure, preventing quick coupler connection. Loosen one coupler to release pressure. The operator must understand the effect of the control valve position on the tool.
- Accelerate the engine as needed and operate the tool using the pack control valve, ensuring the tool's action corresponds to the valve position.
End of Operations:
- Lay down the tool, avoiding contact with mud and dirt.
- Put the flow lever of the power pack in the OFF position to block oil supply.
- Stop the engine.
- Disconnect the tool from the flexible hose, then disconnect the flexible hose from the power pack.
- Roll up the flexible hose into circles (approx. 60 cm diameter) and cover couplers with plastic caps.
- Store the power pack after the muffler and engine have cooled to prevent fire/accidents. Store in a safe place, protected from bumps and atmospheric agents.
- If transporting on trucks, ensure the machine is loaded and blocked properly to prevent damage.
- Caution: If problems occur during operation, immediately identify and repair the fault to prevent accidental use of damaged equipment by others.
Maintenance and Care:
Maximum Pressure Regulation:
- The "MAXIMUM PRESSURE" valve adjusts the maximum pressure, protecting tools.
- The "CUT-OFF" valve releases pressure near the limit, preventing excessive effort.
- Danger: Modifying these factory-set valves can be risky. Only adjust if strictly necessary and within specified tool pressure limits. Maximum pressure must not exceed 700 bar.
- Instructions for Adjustment:
- Turn on the unit with the distribution valve lever in the central (OFF) position, no tools/pipes connected.
- Run for a few minutes to warm the oil to operating temperature.
- Loosen the "CUT-OFF" valve locknut and tighten its central screw until a small pressure is applied to the valve bottom.
- Turn the distribution valve lever to the channel with quick couplings. Pressure should rapidly rise to 650-700 bar.
- Loosen the "MAXIMUM PRESSURE" valve locknut and carefully adjust the maximum pressure with its screw.
- Retighten the "MAXIMUM PRESSURE" valve locknut.
- Loosen the "CUT-OFF" valve screw until it clicks and pressure drops by 50-100 bar from the set value.
- Rotate the central distribution lever to the central position, then back to the previous channel to verify "CUT-OFF" valve adjustment.
- Retighten the "CUT-OFF" valve locknut.
Cleaning of the Power Pack:
Regular cleaning is vital for good functioning, identifying leaks, and ensuring a firm grip.
- With Hydro Cleaner:
- Place on a clean surface or wooden pallet. Avoid directing the nozzle too close to the tool, especially with hot water, to prevent removing stickers and paint.
- Do not spray the engine's electrical parts. Refer to the motor manufacturer's manual for cleaning instructions.
- Allow water to drip, moving the machine to help drainage from cavities.
- Use an air gun to remove all water and moisture.
- Once dry, spray a protective-dewatering product (e.g., CRC or WD40) on all chromed parts, tool cavities, and the ON-OFF valve area. Move movable parts to ensure full coverage.
- Dry tool handles completely.
- Start the power pack and run at minimum for a few minutes.
- With Rags or Paper:
- Clean with a damp rag, brush with gasohol, or an air gun to remove dirt and oil.
- Focus on recessed points, cavities, and quick coupler connection surfaces.
- Once dry, spray a protective-dewatering product on all electric parts, near the ON-OFF valve, and in cavities. Move movable parts for full coverage.
- Clean and dry tool handles completely.
Periodic Controls and Substitution of Worn Parts:
- Every Time the Equipment is Used:
- Control hydraulic oil level.
- Control engine oil level (or perform maintenance as per engine manual).
- Control condition of hoses and quick couplers.
- General equipment control.
- Carefully clean the equipment.
- Warning: Engine oil should be completely changed after the first 5 hours of work, then as indicated in the motor manufacturer's manual.
- Every 150 Hours of Work (Approx. Every 3 Months):
- Perform all checks from previous paragraphs.
- Control all screws, fastenings, and fittings are perfectly locked.
- Control hydraulic oil condition (should be transparent, no foams). If necessary, replace completely, including oil in flexible hoses and tool.
- Complete equipment cleaning.
- Check and blow engine air filter with compressed air if necessary.
- Carefully clean the equipment.
- Every 300 Hours of Work (Approx. Every Six Months):
- Replace hydraulic oil completely, including oil in flexible hoses and tool.
- Replace hydraulic oil filter cartridge.
- Change engine oil as specified in the engine manual.
- Replace engine air filter.
- Perform all other engine controls as specified in the engine manual.
- Check tightening of bolts, nuts, and fittings.
- Check condition of flexible hose and hydraulic oil cooler.
- Clean the spark plug.
- Carefully clean the equipment.
- More accurate engine maintenance information is in the manufacturer's manual.
Maintenance of the Flexible Hose:
- Inspection of the Hose:
- Check for oil leaks and ensure hose surfaces are integral, without peeled sections showing metallic braid or broken wires.
- Small sections of wire braid are tolerated only if wires are not broken and still braided.
- Inspect pressed bushings at hose extremities; discard hoses with damaged end terminals, unnatural bending, squeezing, or deformations.
- Check quick couplers for dryness, oil leaks, and free-sliding knurled bushings. Male couplers should be intact. Forcing a damaged male coupler will damage the female.
- If hoses or quick couplers show oil leaks, even if screwed tightly, they must be replaced.
- Replace hoses showing squeezing, unnatural bending, deformations, or swellings.
- Note: Flexible hoses always contain oil. When changing power pack hydraulic oil, it's recommended to replace hose oil as well to ensure full replacement and avoid contamination of new oil.
Disposal and Scrapping:
- Dangerous Wastes: Hydraulic oil, hydraulic oil filters, engine oil, engine oil filters, power pack batteries, power pack acid, flexible hoses full of oil, and all fuels are dangerous wastes and must be disposed of according to local regulations. Infringement carries legal responsibilities. Storage and purchase/sales of these materials must also follow specific regulations.
- All other components are made of recyclable materials and can be stored, disposed of, and scrapped without special precautions.
- TEHMA materials and components do not contain asbestos or other toxic elements requiring special caution.
Repair:
- TEHMA hydraulic tools are professional products and should only be repaired by qualified personnel.
- Repairs require technical literature, instruments for hydraulic value control, and an adequate hydraulic source for testing. Do not fully disassemble if you are not a technician with professional tools.
- Reparation of Products Under Warranty: Repairs under warranty must only be carried out by TEHMA authorized service agents; otherwise, the warranty will be void.
- General Information (for minor repairs by other engineers):
- Before Disassembly:
- Clean the product thoroughly.
- Have a clean working surface, paper, rags, tools (air gun, rubber hammer, brass punch, vice with soft jaw protection), and a clean container for oil collection.
- Have an exploded view of the tool and part list.
- Consider replacing all exposed seals during complete disassembly.
Need help?
General
To Next Page