Course 3: Unit 8 Flashcards
(124 cards)
The maintenance, repair and replacement requirements are in Section 8.6 ASME A17.1/CSA B44. The safety practices followed when performing maintenance are specified in:
A. The OSHA regulation for construction
B. Elevator Industry Field Employees’ Safety Handbook and requirements specific to the location
C. The ASME A17.1/CSA B44 Safety Code for Elevators and Escalators
D. The elevator technician’s best judgement
B. Elevator Industry Field Employees’ Safety Handbook and requirements specific to the location
When maintenance is performed on an escalator, it must be:
A. Taken out of service and barricades placed at both ends
B. Taken out of service and the entrance end barricaded
C. Left in service until a part is removed
D. Posted out of service with a warning sign at the entrance end
A. Taken out of service and barricades placed at both ends
When a maintenance technician arrives at a facility to perform maintenance:
A. He/she should first go directly to the elevator machine and begin the maintenance
B. He/she should go to the car top and begin maintenance
C. He/she should first check to verify that all of the equipment is operating
D. He/she should first check in with building personnel and pick up any complaints or other information
D. He/she should first check in with building personnel and pick up any complaints or other information
The viscosity of lubricating oil is a measure of:
A. The color of the oil
B. The weight of the oil or specific gravity
C. The thickness of the oil or resistance to flow
D. The smell of the oil
C. The thickness of the oil or resistance to flow
The higher the viscosity number, the:
A. More resistance to flow
B. Less resistance to flow
C. Better the oil
D. Worse the oil
A. More resistance to flow
Temperature affects viscosity as follows:
A. As the temperature increases, the viscosity increases
B. As the temperature decreases, the viscosity decreases
C. As the temperature increases, the viscosity stays the same
D. As the temperature increases, the viscosity decreases
D. As the temperature increases, the viscosity decreases
The viscosity index is a measure of:
A. The viscosity
B. The viscosity change with temperature
C. The index of the instrument used to measure viscosity
D. The same as viscosity but expressed in metric units
B. The viscosity change with temperature
A viscosity index of 100:
A. Is very poor
B. Is usually good
C. Is not possible
D. Is always required
B. Is usually good
Lubricating oil usually has the following additives to improve its performance:
A. Viscosity index improver
B. Detergents, dispersants, antioxidants, rust and corrosion inhibitors
C. Foam inhibitors, pour point depressants, friction modifiers
D. All of the above
D. All of the above
A grease classified as #0 by the American National Lubricating Grease Institute would be:
A. A very hard grease
B. A very low grade grease
C. A very high grade grease
D. A relatively soft grease
D. A relatively soft grease
The most common grade of grease in retail stores (automotive supply) is:
A. #5
B. #000
C. #2
D. #3
C. #2
Of the various solid lubricants found in elevator use, the following two may have the same appearance:
A. Graphite and molybdenum disulfide
B. Graphite and silicone
C. PTFE and graphite
D. Moly and PTFE
A. Graphite and molybdenum disulfide
If rolling element bearings have a grease fitting, they:
A. Should be packed full of grease
B. Should be given a couple of pumps of grease every month in most cases
C.Should be lubricated with very heavy grease at least every six months
D. None of the above
D. None of the above
Sleeve bearing are usually made of:
A. Aluminum
B. Stainless steel
C. Babbitt or bronze
D. Cast iron
C. Babbitt or bronze
Sleeve bearings (journals) are usually:
A. Lubricated with a very heavy grease
B. Lubricated with a continuous source of oil
C. Lubricated with a solid lubricant such as graphite
D. Not required to be lubricated since they are self-lubricating
B. Lubricated with a continuous source of oil
If a manufacturer specifies a detergent lubricating oil with a viscosity of 150 SSU:
A. That is sufficient information to select the oil
B. That is not sufficient information to select the oil since the temperature at which the viscosity was measured was not specified
C. Any good 30W engine oil will do
D. A multi-viscosity engine oil should be used
B. That is not sufficient information to select the oil since the temperature at which the viscosity was measured was not specified
The lubricant used to lubricate steel suspension and compensating ropes is:
A. Very soft grease usually #00 or #000
B. A very high viscosity oil usually 200 to 300 SSU at 210°F
C. Not important because ropes do not require lubricating
D. A low viscosity oil usually 34 to 38 SSU at 210°F
D. A low viscosity oil usually 34 to 38 SSU at 210°F
Hydraulic oil used in hydraulic elevators:
A. Should have a relatively low viscosity index, usually 40 to 50
B. Should have a relatively high viscosity index, usually at least 95
C. Is not important in the viscosity index
D. Is usually not specified in the viscosity index
B. Should have a relatively high viscosity index, usually at least 95
Governor ropes usually require:
A. Lubrication monthly with a soft grease
B. Lubrication monthly with a heavy oil such as worm gear oil
C. No lubrication after installation per the Code
D. Washing with a safety solvent before installation to remove all lubrication
C. No lubrication after installation
During maintenance, a reduction gear is found to have lubricating oil with very heavy foam that means:
A. The lubrication is working very well and is adequate
B. This is normal for some machines in very cold climates
C. The temperature of the machine room is too high and should be reduced
D. The oil should be changed since foam is not a good lubricant
D. The oil should be changed since foam is not a good lubricant
The lubricant used on electric elevator guide rails must comply with that specified by the manufacturer of the:
A. Governor
B. Drive machine
C. Controller and generator where provided
D. Safety
D. Safety
Guide rails that require lubrication are required to be:
A. Cleaned monthly
B. Kept clean and free of lint and dirt accumulation and excessive lubricant
C. Cleaned every six months
D. Cleaned annually
B. Kept clean and free of lint and dirt accumulation and excessive lubricant
Oil buffer oil must comply with the viscosity specified:
A. On the layout drawing
B. In the maintenance control plan
C. On the buffer data plate
D. On the safety marking plate
C. On the buffer data plate
Oil for the oil buffers should be stored in:
A. The pit
B. The space on the car top
C. The machine room or parts storage area
D. The channels adjacent to the buffer
C. The machine room or parts storage area