Fdny A35 Exam Questions and Answers Verified 100% Correct

Fdny A35 Exam Questions and Answers Verified 100% Correct System of Connected Air Compressors - ANSWER -Air forced from one compressor into another several time to increase pressure each time and ultimately forced into a hose line or storage container. Used when there is a need for air under very high pressure. Unloading Valve - ANSWER -safety component. allows air to escape compression chamber when there is a strain on the electrical motor. This usually occurs in the first few cycles when the compressor is first started. Automatic in most systems but it may be manual in older compressors. Follow instruction manual for old compressor. Pressure Gauge - ANSWER -safety component. Indicates pressure inside receiver. CF holder should pay close attention to reading. Must NEVER exceed manufacturer's recommendations. If greater than recommended level there could be explosion. Pressure in the receiver is controlled by a switch; turn switch in the desired direction to adjust pressure. Pressure Relief Valve - ANSWER -safety component. Allows air to escape from the system when pressure is too great. Operate automatically. May operate manually by pulling on the ring attached to the pressure relief valve Air intake valve - ANSWER -safety component. Fitted w/ an air filter which prevents dust from being drawn into compression cylinder. Dust in the compressor could result in fire in the cylinder b/c of heat in the cylinder. Fire could case damage to air compressor. This is why its important to make sure filter is always clean and securely connected to the compressor. Filter & Moisture Separator Assembly (FMSA) - ANSWER -safety component. Moisture can be a problem; this filter removes moisture from compressed air. Installed between compressor and receiver. Drain cock attached to FMSA to drain water and dirt. Automatic Control Device - ANSWER -Attached to receiver. Shuts down compressor when pressure in receiver is adequate and restarts when more pressure needed. Safety Relief Valves - ANSWER -safety component. keep compressor tank from bursting if pressures witch stops working Constant Speed Control Switch - ANSWER -safety component. Used when steady/constant demand for compressed air. If demand drops excess compressed air is released through pressure release valve. Cooling system - ANSWER -safety component. compression chamber and compressed air must be cooled to avoid overheating. Small compressors are air-cooled (fan). Large compressors are water-cooled. Low Oil Level Indicator Switch - ANSWER -safety component. automatically shut down compressor if oil is low. Serious damage can be caused if compressor is operated w/ low oil Maintenance & Repairing Compressor- General Requirements - ANSWER - always follow guidelines outlined by manufacturer. Repair: -always turned off -electrical supply shutdown -air drained -made by qualified technician Repairs by CF - ANSWER --must know how to correct cooling system; -may replace belts -change air filter -change lubrication oil Leaks - ANSWER -CF must look & listen for leaks. More prominent in colder months when sealing materials shrink. Most leakage occurs at tubing and fittings at air reciever tank. Heat & Compressor - ANSWER --never place combustible materials nearby; -do not use near devices that produce heat; solar heat is not known to cause overheating CF Responsibility - ANSWER --visually inspect -remain in area for a few minutes after compressor started -do not operate at speeds above recommended ranged Injury from Compressor - ANSWER --Dust or debris blow off clothing can be driven under skin causing DEATH -Eardrum ruptures at 40 PSI -Air entering mouth can destroy lungs and internal organs -Eyesight (always wear googles) Hydrostatic testing - ANSWER -Fire Code no longer requires affidavit indicating reciever is hydrostactically tested and defect free. HOWEVER, test every 5 years at a minimum is reccomended.