ATOS PVPC-C-3029/1D piston pump from Italy is in stock.

Brand

ATOS/Italian Atos

Application Areas

Medical & Health, Chemical, Petroleum, Mining, Road/Rail/Marine

ATOS Piston Pump Troubleshooting:

ATOS Axial Piston Pump Flow Problems

(1) Insufficient suction. Caused by excessive resistance in the suction line or insufficient replenishment. For example, excessive pump speed, low oil level in the tank, air leakage in the inlet pipe, or clogged oil filter.

(2) Excessive leakage. Caused by excessive pump clearance and poor sealing. For example, scratches on the distributor plate by metal fragments or iron filings, resulting in end-face leakage; poor fit of the check valve sealing surface in the variable displacement mechanism; sand holes or scratches on the support surfaces of the pump body and distributor plate. The damaged part of the pump can be identified by checking for foreign matter mixed in the hydraulic oil within the pump body.

(3) Insufficient swashplate angle results in low pump displacement. This requires adjusting the variable displacement piston to increase the swashplate angle. Non-zero discharge at neutral position

The neutral position of an ATOS piston pump is defined as the swashplate angle being zero, at which point the pump's output flow should be zero. However, sometimes the neutral position deviates from the midpoint of the adjustment mechanism, and flow is still output even at the midpoint. This is caused by misalignment, loosening, or damage to the controller, requiring readjustment, tightening, or replacement. Insufficient pump angle holding force and wear on the tilt angle trunnion can also cause this phenomenon.

ATOS piston pump output flow fluctuations

ATOS piston pump output flow fluctuations are related to many factors. For variable displacement pumps, this can be attributed to poor control of the variable displacement mechanism, such as foreign objects entering the mechanism, causing scratches, wear, or damage on the control piston, resulting in unstable piston movement. Insufficient amplifier power or damaged parts, and poor damping efficiency in spring-loaded control pistons, can also cause unstable piston movement. Unstable flow is often accompanied by pressure fluctuations. These types of faults generally require disassembling the hydraulic pump, replacing damaged parts, increasing damping, improving spring stiffness, and increasing control pressure.

Abnormal Output Pressure of ATOS Piston Pump

The output pressure of an ATOS piston pump is determined by the load and is approximately proportional to the input torque. There are two types of faults causing abnormal output pressure:

(1) Low Output Pressure

When the ATOS piston pump is in self-priming mode, if there is air leakage in the inlet line or significant leakage in the hydraulic cylinder, check valve, or directional valve in the system, the pressure will not rise. This requires finding the leak, tightening, or replacing the seals to increase the pressure. If the relief valve is faulty or the adjusted pressure is too low, the system pressure will also not rise; the pressure should be readjusted or the relief valve repaired. If a large amount of leakage occurs due to a misalignment between the hydraulic pump cylinder and the distributor plate, the cylinder may crack in severe cases; in this case, the mating surfaces should be re-ground or the hydraulic pump replaced.

(2) High Output Pressure

If the circuit load continues to increase, the pump pressure will also continue to rise, which is normal. If the load is constant and the pump pressure exceeds the required load value, the hydraulic components other than the pump, such as the directional valve, pressure valve, transmission device, and return line, should be checked. If the maximum pressure is too high, the relief valve should be adjusted. Vibration and Noise of ATOS Piston Pumps

Vibration and noise occur simultaneously in ATOS axial piston pumps. They not only harm the machine operator but also pollute the environment.

(1) Mechanical Vibration and Noise

Noise is generated by misalignment or jamming between the ATOS piston pump shaft and motor shaft, damage to bearings and couplings of the rotating shaft, broken elastic pads, and loose assembly bolts. For pumps operating at high speeds or transmitting large amounts of energy, regular inspections are necessary, and the amplitude, frequency, and noise of each component should be recorded. Resonance will occur if the pump's rotational frequency matches the natural frequency of the pressure valve; this can be eliminated by changing the pump's speed.

(2) Noise Generated by Fluid Flow in Pipelines

Noise is generated by factors such as an excessively narrow inlet pipe, insufficient flow capacity or blockage of the inlet filter, air intake in the inlet pipe, excessively high oil level, insufficient oil suction due to low oil level, and liquid hammer in high-pressure pipelines. Therefore, proper design of the oil tank and correct selection of filters, oil pipes, and directional valves are essential. Common models of Italian ATOS plunger pumps:

PVPC-LZQZ-5073/1D/18

PVPC-C-3029/1D

PVPC-C-3029/1D 11 /WG

PVPC-C-4046/1D

PVPC-C-4046/1S

PVPC-C-5073/1D

PVPC-C-5073/1S 10

PVPC-CH-5073/1D-IX 24DC

PVPC-CZ-5073/1D 12

PVPC-LQZ-5073/1D 11

PVPC-LW-4046/1D 10

PVPC-LZQZ-3029/1D

PVPC-LZQZ-3029/1D/18 PVPC-LZQZ-4046/1D

PVPC-LZQZ-4046/1D/18

PVPC-LZQZ-5073/1D 11

PVPC-LZQZ-5073/1D/18

PVPC-R-3029/1D 11

PVPC-R-4046/1D 11

PVPC-SLE-3029/10 20

PVPC-SLE-4046/1D 20

PVPCX2E-C-3029/31036/1D 10

PVPCX2E-LW-3029/31036/1D 10 The company mainly deals with European and American brands and can source brands from any European country. For example, our key German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, VICKERS, ROSS

British brands: Norgren

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi