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9.6.17 Speed Governor
Inspection of the speed governor is a very critical part of the inspection. The A10.4 Code
specifically addresses the inspection requirements for this device. It is one half of the function
that makes elevators safe; the car safety device is the other half. The certified inspector should
follow the steps outlined as close as possible to assure nothing is overlooked. Always be aware
that governor parts do wear, and governors do have to be rebuilt or replaced. Leaking or exposed
lubrication is a good indication of deteriorating seals (enlarged openings resulting front wear or
worn gears). Also, be sure governor seals are in place and that they are properly located. The
seal most used is the lead block and wire type, but there are other types which provide the same
degree of security. The seal is used to indicate whether adjustments have been modified from set
position. Be sure that seals are placed in such a position that it is broken if adjustment changes
are made. occasionally, seals are found in a position that modification can be made and the seal
remains intact. Mistakes in the type or size of governor rope are often found. Governors are
designed to operate with a specific size and type of rope. Any change will alter the operation of
the car stopping mechanism. An example of this is a rope of smaller than design diameter,
which could allow the governor jaw to close without gripping the governor rope, resulting in the
car safety not applying.
9.6.18 Machine Room
Check the machine room for the following:
a. Adequate lighting.
b. Housekeeping and the presence of any flammable liquids (flash point less than 110 degrees
F) or materials not necessary for the operation and maintenance of the elevator.
c. Check that adequate ventilation by natural or mechanical means has been provided to insure
safe and normal operation of the dumbwaiter. Check local codes to see that machine room
ventilation is in compliance. With the newer type of control equipment, ventilation is even more
d. Fire extinguisher, proper class, mounting, and maintenance record tag. They should be
properly mounted and maintained.
e. Machine rooms and machinery spaces are vulnerable areas. They are assumed to be great
storage areas. Navy policy is that they are not to be used for storage of non-elevator related
items. Absolutely no flammable items are permitted. It is the responsibility of the inspector to
insure proper use of these areas.


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