Salter Brecknell WB-521 Series - Manual (Page 15)

SBI521 Service Manual 13
1.6 Routine Maintenance
Always turn off the machine and isolate from the power supply before starting any
routine maintenance to avoid the possibility of electric shock.
1.7 Sharp Objects
Do not use sharp objects such as screwdrivers or long fingernails to operate the keys.
1.8 Cleaning the Indicator
IMPORTANT: This equipment must be routinely checked for proper operation
and calibration.
Application and usage will determine the frequency of calibration required for
safe operation.
Table 1.12 Cleaning DOs and DON’Ts
DO DO NOT
Wipe down the outside of standard products
with a clean cloth, moistened with water and
a small amount of mild detergent Attempt to clean the inside of the indicator
Use harsh abrasives, solvents, scouring cleaners or
alkaline cleaning solutions
Spray the cloth when using a proprietary
cleaning fluid Spray any liquid directly on to the display window