Troubleshooting For Hydraulic Systems
The first step in Troubleshooting a hydraulic system to get the facts. Take the "history" of the system. Ask the owner if it is a new problem, a problem, or an old problem. Ask if the unit is under maintenance lately. The majority of boiler problems fall into one of three areas: electrical, ventilation, or the flow of water. Electrical problems can be the most troublesome because the boiler is part of a larger system, and it was a box-wired during installation. Start by checking for power in the boiler, the indicator can be used to determine if the sendee switch is on if the polarity. The government must be from the black lead (hot) and white lead is used as a generic.
If the boiler is not firing, check the controls. Follow the sequence to start the unit. How far in the sequence of the boiler receives will be a guide in isolate the source of the problem. Visually check the rotation of the shaft of valve. Thermostats another common source of heating problems that often arise vibration, bad contacts, broken wires or improper temperature settings.
Ventilation problems often arise due to ventilation restriction or deterioration of the ducts.
Stand-pipes (plum) should be provided for each vent. Security warning: Cut the end of the exhaust pipe of the safety relief valve angle, to prevent someone from mount it or cover it.
If the valves and vent appear operating, check the limit and operative switches. With a measuring device to determine if the roll-out and blocked the vent switch is in working condition. If these switches are tripped, look for flue blockages and sources of combustion air.
Consumption of water problems affect the transfer of heat. Heat in the boiler must pass through the system to produce proper thermal contact. The power of one of thermostats to establish flow through the boiler. Use the contact thermometer to compare supply and return water temperature, water boiler firing, there must be at least 20 C difference at full operating temperature.
Most water flow problems as a result of air in the system. Air hydraulic system can stretch and expand. Excessive air can break the link of water molecules which are the closed loop hydraulic, preventing circulation of water. Air in the system will cause noise. Purge air or exhaust air and look for the source of air build-up. Series systems can be removed from the air put outlet hose in the bucket. When will no longer appear air bubbles has been removed. Other systems should be manual or automatic air vent with a high point of the system.
Other common problems include:
- Air hydraulic systems using natural gas. Pump motor failure and water leaks around the pump packing due to air in the system.
- The noise of the engine water pump and pump bearings made of carbon steel or Teflon (water-lubricated).
- Cavitation (localized in gaseous state system).
- Turbulence.
- Poor support (noise).
Hydronic heating problems include:
- Uneven heating (room-by-room calculation of heat loss and balancing valves are needed.
- Speed.
- Vibration parts of the system.
- Expansion noises. Do not clamp tightly; the pipe must not touch the edges of the holes through the floors. Expansion joints to help resolve this problem
Some of the controls needed are:
- Air control devices.
- Vents (pipelines pitched to vent). Automatic air vents may be a problem source.
- Balancing valves to control the flow rates.
- Check valves to prevent backflow at low thermal load.
- The valve.
Ventilation system requires more water to be added to it. This water contains air in the solution plus some aggressive chemicals. The best is to trap new compression of air in the tank. Avoid venting compression tank, if at all possible. Air, compressed in this capacity volume of water in the system to expand. It also permits the water temperature increase.
When the system is running properly, you should have the opportunity to conveniently place your hand on the compression tank. Higher temperatures indicate a problem, and that the valve can be opened. When in the boiler, the water was hot and the air is released. Some air can not go in a tube and end up in the air vents. Tank may gradually lose its air and the safety valve will be opened. If the safety valve water spill on each heating cycle, compression tank is not enough air. Most air is released from the water at a speed low, and where the temperature is the highest (boiler).
Another problem occurs when the heat is off. The water is cool, and the pressure drops. Pressure reducing valve wiH allow more fresh water (containing more air into the system. If this will continue, within the system will be corroded from minerals and chemicals that are commonly found in untreated tap water...
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Air-Conditioning