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５０
A=l1/2 +d b=l2/2 +d c=l3/2 +d
Take d=1m
Then S=4(ab+bc+ac)
The positions of measuring points are shown in table 4.
12.8Measuring technology of freezer performance
parameter
12.8.1 Measuring content
The measuring technology of freezer includes measurement of refrigeration
property and measurement of safety requirement of electrical parts. The
following items must be done before ex-factory: (1) appearance
requirement; (2) cooling speed; (3) leakage of current; (4) insulation
resistor (cool state); (5) electrical intensity; (6) starting performance; (7)
ground resistor; (8) sealing performance of refrigeration system; (9)
documents and accessories.
Spot tests for ex-factory are: (10) store temperature; (11) insulation resistor
(wet state and hot state); (12) electrical intensity (wet state and hot state);
MAINTENANCE SERVICE AND TROUBLE SHOOTING
Maintenance Service and Trouble Shooting
(13) Electricity consumption; (14) noise and vibration; (15) electroplated
parts; (16) painting cover; (17) protection of anti-electric shock; (18) cables;
(19) door opening force; (20) freezing ability; (21) rising up speed of
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