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experts in the provision and repair of hydraulic & pneumatic systems

Fault Finding

If your system has crashed, you need it repaired promptly and thoroughly. Some hydraulic systems are very complex, and faults need to be located and identified, both quickly and correctly, to avoid you wasting a lot of time and money.

Fault-finding needs to be done in a thorough and methodical fashion, usually starting with the pumps, and working through the system.

Our vast experience in this area gives you the confidence of knowing that any faults in your equipment will be diagnosed and isolated speedily and efficiently. This is backed by our excellent repair facilities, both in house and if necessary, on-site, giving you the peace of mind of knowing that your equipment will be back in production as soon as possible.

Fault finding in modern complex hydraulic systems can be an extremely time consuming task. There are so many potential causes of a fault; ranging from a broken flexible drive to complete pump failure. Other tests can focus on cylinders, motors, and hydrostatic transmissions.
These tests can include:

Pump Testing - A pump that is losing 20-30% of its flow indicates a possible suction problem. Blocked suction filters and pump cavitation problems can be identified. This test is also used to evaluate the performance of circuit elements, such as control valve, cylinder and hydraulic motor.
Valve Testing – Where decrease in flow is apparent it usually indicates a valve leakage, which can cause considerable loss of performance. This could be due to a cracked seating, a broken or worn spool along with other problems, or it can sometimes pinpoint faulty or leaking seals on a cylinder. Relief valve pressure and control valve leakage will become apparent during these tests, and indicate that the valve or certain valve segments may need replacing.
Cylinder Testing - If the cylinder is slow in operation or cylinder 'creeps' under load, then this test will identify if the problem lies with the cylinder seals or control valve function.
Motor Testing - Motors will be tested for performance and leakage. If the flow is correct and the speed is slow, this indicates a defective motor or cylinder.

This is by no means a full list of fault-finding tests carried out, and indeed fault-finding in hydraulic systems can sometime overlap into other components of the overall system, and we may well identify problems with driving media or even an electrical fault within the system.

Some of our fault-finding projects have included wind driven pumps on a wind-turbine, and a pump powered by a water wheel.

At Danser, you are assured of a professional and flexible approach to all tasks, and an honest and practical solution to your problem. We are not dependant on anybody else for the work we do - we are totally self sufficient so the buck stops here!

Our 100% success rate speaks for itself, and we are highly respected for both our personal service and our expertise.
Although some problems are inevitably larger than others, we always win through.

When things go wrong unexpectedly, you want to be sure you have the best solutions as quickly as possible.