MAINTENANCE WITH Q&A
Page 5-3
TEST EQUIPMENT REQUIRED FOR MAINTENANCE
Table 1 is a list of the test equipment required to test and maintain the chamber.
Equivalent equipment may be used.
Table 1. Required Test Equipment
GENERAL VISUAL INSPECTION
Chassis
Deformation, dents, punctures, badly worn surfaces, damaged connectors, damaged fastener devices, or
damaged handles. Inspect for corrosion and damage to ! nish.
Connectors
Broken or deformed shells or clamps, and other irregularities. Inspect for cracked or broken insulation and for
contacts that are broken, deformed, or out of alignment. Inspect for corroded or damaged plating on
contacts and for loose, poorly soldered, or corroded terminal connections.
Indicators
Cracked or missing lenses
Metal Parts
Physical damage to mounting plates, chassis, brackets, nuts, bolts, screws, washers, handles, fasteners,
and hardware.
Plastic Parts
Signs of cracked or charred insulation, and loose or missing mounting hardware on plastic parts such as
terminal boards, mounting blocks, and insulating members. Inspect for other abnormalities that might
indicate future breakdown.
Wiring
Physical damage and charring on open and laced wiring of chassis, terminal boards, and parts of
equipment, by checking insulation. Inspect wires for breakage and for improper dress.
NOMENCLATURE USE
Precision millivolt source Millivolt source for use in calibrating analog inputs
Type "T" reference table Reference table used for calibrating temperature inputs
Digital voltmeter Measures voltage
Ammeter Measures current
Two sets of manifold refrigeration gauges
with charging hoses
Monitoring refrigeration system pressures and connecting
purge/charge equipment to refrigeration system
One tank of HFC-404A (If Applicable) Charging refrigeration system
One tank of R-508B (If Applicable) Charging refrigeration system
Leak detector Detecting leaks in refrigeration system
Ohmmeter Continuity and resistance tests
Digital Clamp-on Ammeter Reads current draw of electrical components including
heaters, compressors, etc
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