Instruction Manual
D103621X012
4320
January 2018
56
WARNING
When using natural gas as the supply medium the following also applies:
D
When disconnecting any of the pneumatic connections or any pressure retaining part, natural gas will seep from the
unit and any connected equipment into the surrounding atmosphere. Personal injury or property damage may result if
natural gas is used as the supply medium and appropriate preventive measures are not taken. Preventive measures
may include, but are not limited to, one or more of the following: ensuring adequate ventilation and the removal of any
ignition sources.
CAUTION
When replacing components, use only components specified by the factory. Always use proper component replacement
techniques, as presented in this manual. Improper techniques or component selection may invalidate the product
specifications, as indicated in table 1. Improper replacement techniques or component selection may also impair
operations and the intended function of the device.
CAUTION
When replacing components, proper means of electrostatic discharge protection is required. Failure to use a grounding
strap, or other means of electrostatic discharge protection can result in damage to the electronics.
Note
When operating in temperatures -20
_
C (-4
_
F) and below the LCD display will not operate and the push buttons will be disabled. If
maintenance is needed and the use of the wired HART port is required, remove power from the 4320 and re‐apply. The wired
HART port will be usable for one hour.
Instrument Troubleshooting
As an aid to troubleshooting, table 5 lists some common operating faults, their probable causes, and suggests
corrective actions.