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|  MIL-W-45992A(AL)
4.3 Design. Visual examination shall be performed to ascertain compliance with
Drawing 11022100.
4.4 Construction. The inspection of the welding machine shall include visual
and manual examinations to determine conformance with the requirements of 3.3 through
3.3.17. Visual examination shall include verification of proper cleaning; presence
of specified protective coatings; completeness of manufacture and assembly; adequacy
of marking; repetition of key series; and correctness of engine and air compressor
lubrication oil. Manual examinations shall include the operation of movable parts by
hand to assure proper functioning. The examination provisions may be applied at any
practical point in manufacture at which it is feasible to inspect for acceptance
without risk of change in the characteristic by subsequent operations. Failure of the
contractor to provide objective evidence that the welding machine and its components
have passed the examinations prescribed for them by the contractor's inspection system
shall be cause for rejection.
4.5 Physical data.
4.5.1 Weight.
The complete welding machine shall be weighed as per paragraph
3.4.1.10
4.5.2 Dimensions. Using a steel measuring tape, the dimensions of the welding
machine shall be measured to assure compliance with 3.4.1.2.
4.6 Transportability.
4.6.1 By lifting eye. To assure compliance with 3.4.2.1 attach an additional
weight to the base of the welding machine to provide a total weight equal to 2-1/2
times the operational ready weight of the machine. Lift the unit two times by the
machine lifting eye to a height of 4 feet (1.219 m). There shall be no visual
evidence of permanent deformation, weld cracks, or other damage to the welding
machine.
4.6.2 By forklift. To assure compliance with 3.4.2.2 place a chain through the
lifting eye of the welding machine (no additional weight required) and over the tines
of a forklift truck. Transport the unit in an elevated position for a distance of at
least 50 feet.
4.7 Environmental conditions. A warmup time of at least 5 minutes shall be
allowed before environmental testing begins (see 4.7.1, 4.7.2, and 4.7.3). Maximum
power testing shall be performed for 5 continuous minutes.
4.7.1 Low temperature. To assure compliance with 3.4.3.1 the welding machine
shall be submitted to storage at a minimum temperature of -28 degrees F (-33.4 degrees
C) for a period of 24 hours. At the end of this period, the temperature shall rise to
-25 to -20 degrees F (-31.67 to -28.89 degrees C) and after stabilization, the welding
machine shall be started and the output of both the auxiliary power generator and the
welding generator shall be checked for minimum and maximum output per NEMA EW-1 Class
1(100), using a resistance load bank having a power factor of 0.99 or higher.
4.7.2 High temperature. To assure compliance with 3.4.3.2 the welding machine
shall be submitted to storage at a minimum temperature of +160 degrees F (71.1 degrees
C) and induced relative humidity of 80 to 100 percent for a period of 24 hours. At
the end of this period, the temperature shall be reduced to +120 to +115 degrees F
(+48.9 to +46.12 degrees C) and 80 to 100 percent relative humidity. After a 24 hour
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