Dry-Out" Period; Bath Preparation And Filling - Fluke 7341 User Manual

bracket by gently pushing on the bath. Proceed to fill the bath with the applica-
ble bath fluid after reading the entire User's Guide.
If you have any questions concerning installation of the tipping prevention
bracket, please contact a Hart Authorized Service Center.
5.4

"Dry-out" Period

If this equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired.
Before initial use, or after transport, or after storage in humid or semi-humid
environments, or anytime the bath has not been energized for more than 10
days, the instrument needs to be energized for a "dry-out" period of 2 hours be-
fore it can be assumed to meet all of the safety requirements of the IEC 1010-1.
If the product is wet or has been in a wet environment, take necessary measures
to remove moisture prior to applying power such as storage in a low humidity
temperature chamber operating at 50°C for 4 hour or more.
5.5

Bath Preparation and Filling

CAUTION: Avoid spilling fluid over the control panel. Immediately clean
up any spilling. Cover the panel if necessary during filling. DO NOT over-
fill.
The Model 7341 Bath is not provided with a fluid. Various fluids are available
from Hart Scientific and other sources. Depending on the desired temperature
range, any of the following fluids, as well as others, may be used in the bath:
• Water
• Ethylene glycol/water
• Mineral oil
• Silicone oil
• Ethanol
Fluids are discussed in detail in Section 8.1, Heat Transfer Fluid.
Remove any access hole cover from the bath and check the tank for foreign
matter (dirt, remnant packing material, etc.).
Fill the bath with clean unpolluted fluid. Fill the bath carefully through the
large rectangular access hole to a level that will allow for stirring and thermal
expansion. Section 8.1.5, Thermal Expansion, explains fluid expansion.
CAUTION: DO NOT turn on the bath without fluid in the tank and the
heating coils fully immersed. See Section 7.4.1, Fluid Expansion Reser-
voir, on how to use the fluid expansion reservoir.
5 Installation
"Dry-out" Period
19