GE GEH-5304A - Manual (Page 17)

GEH-5304A
17
The surface of a space heater block becomes hot when the heater is energized.
The temperature rise above the ambient temperature may be as high as 400
°
C.
Avoid touching heater blocks which have recently been energized to prevent
burns. Also, to prevent fire or explosion, ignitable dust or lint should not be
allowed to collect around the surface of the heaters.
J. Ventilation System
Blowers or central systems must be in operation to supply cooling air before loading force ventilated ma-
chines. Air filters should be in place. Blowers should be checked for correct rotation. See outline or rota-
tion arrow.
Figure 1
Correct Arrangement Of Blower Housing, Impeller Blades,
And Direction Of Rotation To Obtain Proper Pressure And Air Flow
K. General Mechanical Inspection
Check the inside of the machine for tools, metal chips or any other foreign material that may have accumu-
lated during storage or installation. Make sure that all rotating parts have clearance from any stationary
parts. Turn the machine over by hand, if possible, and check for scraping noises or any other sign of me-
chanical interference. Check the tightness of the bolts in the feet, couplings, bearing housings and any other
bolts that may have been disturbed.
Standard motors, as shipped, are assembled with bolts without lubricant (dry
threads). When necessary, bolts may be replaced with bolts with dry threads or
with bolts lubricated with a motor oil or other suitable thread lubricant. When
lubricated threads are used, reduce torque to 65% of the value shown. The
torque values shown, when applied to bolts with lubricated threads, can cause
excessive bolt tension and possible bolt breakage.