Precisionâ Instruction Manual
Installation
Location: The most uniform operating conditions and results will be obtained by placing the bath in an area remote from
drafts, ventilating outlets, radiators, and other rapidly changing ambient conditions.
Cleaning: The interior of the bath, shelf platform, and cover should be washed with a mild detergent solution and rinsed
with distilled water.
Electrical Connections: Important (Please Read Carefully.)
CAUTION: DO NOT connect bath to power supply unless bath is
filled with at least 1" of water and the line switch is in the "Off"
position. This will prevent the heater from burning out.
WARNING: For personal safety, this apparatus must be properly
grounded.
The power cord of this instrument is equipped with a three-prong (grounding) plug which mates with a standard three
prong (grounding) wall receptacle to minimize the possibility of electric shock hazard from this apparatus. The user
should have the wall receptacle and circuit checked by a qualified electrician to make sure the receptacle is properly
grounded. Where a two-prong receptacle is encountered, it is the personal responsibility and obligation of the user to
have it replaced with a properly grounded three-prong wall receptacle.
WARNING:DO NOT, under any circumstance, cut or remove the
third (ground) prong from the power cord. DO NOT use a two-
prong adapter plug.
Determine the total amount of current presently being used by other apparatus connected to the circuit that will be used
for this unit. It is critical that the added current demand and other equipment on the circuit not exceed the rating of the
fuse or circuit breaker in use.
CAUTION: Be sure the power supply is of the same voltage as
specified on the nameplate.
Operation
Before filling, check line switch to be sure it is in the "Off" position. Adjust the diffuser pan legs so that the pan will be at
the desired depth when the water level is within 1-1/2" of top.
NOTE: Legs are not supplied on the Model 180.
Fill bath with distilled water, making allowance for displacement by the sample(s) to be immersed, and for expansion of
the media upon reaching operating temperature. The maximum liquid level should be 1-1/2" from top surface of the bath
after object(s) are immersed.
NOTE: Distilled water is recommended. Distilled water will not cause
corrosion to the bath chamber, and cleaning of the bath will be less fre-
quent.
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