SECTION 11615
LABORATORY CONTROLLED TEMPERATURE ROOMS
AND
LABORATORY UNDERCOUNTER REFRIGERATORS
1.
This section provides inspection and test procedures for Laboratory
Controlled Temperature Rooms (CRT) and Undercounter Refrigerators.
2.
Symbol
Item Description
"CAR" ..............Laboratory Controlled Temperature Rooms.
VL-52 ..............Normal temperature undercounter refrigerator,
0.14 m3 (5 cft).
VL-52F .............Low-temperature undercounter refrigerator,
0.14 m3
(5 cft).
VL-52E .............Explosion-proof normal temperature undercounter
refrigerator, 0.14 m3 (5 cft).
VL-52EF ............Explosion-proof low-temperature undercounter
refrigerator, 0.14 m3 (5 cft).
3.
INSPECTIONS AND TESTS
A.
Controlled Temperature Rooms:
1)
Visual Examination:
Each "CAR" should be inspected for the
following defects:
a)
Materials not as specified, and obviously damaged,
defective, or not properly suited for purpose intended.
b)
Design not as specified. Not incompliance with applicable
codes and standards.
c)
Components not easily accessible for servicing and
maintenance.
d)
Safety devices not provided as specified.
e)
Base metal exposed or too thinly covered, blistered, peeled
or chipped.
f)
Finished panels discolored, fish scale, burn-off, beads of
enamel or glaze, lumps, scumming, scratched, runs, sags,
drips, or other imperfections.
g)
Stained or foreign matter embedded in finish.
h)
Color not as specified.
i)
Bolts, nuts, screws, and other types of fastening devices
missing, broken, stripped, fractured or not type specified.
j)
Electrical wiring and connections cut, abraded, loose at
terminals, or not installed as specified.
k)
Electrical switches, lighting, starters, receptacles, not
type specified.
l)
Control panel not type as specified.
2)
Operational Test:
a)
Temperature Control Tests:
(1)
From ambient temperature, room shall attain preset
temperature and stabilize within 2 hours, then
maintain set temperature for a period of 24 hours,
with temperature differential between any two points
not exceeding the specified tolerances.
(2)
Control points should not exceed the limits
established by the contract specifications.
(3)
Conduct tests with a minimum of six temperature
sensing units with sensitivity of 0.1 C, located at
11615-1
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