Ohaus Corporation www.ohaus.com
3
Defender
™ Series Bases Service Manual
1.3
Safety Precaution
For AC mains powered models:
- Verify that the local AC power supply is w
ithin the input voltage range printed on the equipment’s
data label. - Only connect the AC power cord to a compatible grounded electrical outlet.
For AC adapter powered models:
- Verify that the local AC power supply is within the input voltage range print
ed on the AC adapter’s
data label. - Only connect the AC adapter to a compatible grounded electrical outlet.
Do not position the scale such that it is difficult to disconnect the power cord from the power
receptacle.
This equipment is intended for indoor use and should only be operated in dry locations.
Operate the equipment only under ambient conditions specified in the user instructions.
Do not operate the equipment in hazardous or unstable environments.
Disconnect power from the equipment before cleaning or servicing the equipment.
Service should only be performed by authorized personnel.
Use electrostatic protection measures when handling the printed circuit board.
Only use original replacement parts and accessories.
1.4
Service Facilities
To service a scale Base, the service area should meet the following requirements:
Clean and level environment.
Away from magnetic fields such as motors or large transformers.
Free of vibrations such as fork lift trucks close by, large motors, etc.
Stable and level work surface.
Not exposed to direct sunlight or radiating heat sources.
