Moore 348 FIELDPAC FIELD MOUNTED CONTROLLER

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Moore 348 FIELDPAC FIELD MOUNTED CONTROLLER | Manualzz

MAINTENANCE UM348-1

heat stressed parts. Check for excessive dirt or dust build-up which may impede air flow and inhibit proper heat dissipation.

6.2.3 Cleaning

Circuit boards should not be cleaned unless accumulated foreign material is causing a problem. The enclosed station design should prevent particulate material from building up. If cleaning becomes necessary, remove debris with either a soft brush or low velocity deionized air.

The

bezel is cleaned with a mild, nonabrasive liquid cleaner and a soft, lint-free cloth. Do not use a paper towel.

6.2.4 Circuit Board Handling

Special handling procedures are required whenever a circuit board assembly is removed, tested, repaired, adjusted or installed in the Station's case. These procedures are required to prevent component damage from the electrostatic discharge hazard to which most semiconductors are vulnerable. When handling an assembly, follow the procedures outlined in the “Assembly Replacement” section of this Instruction.

6.3 FUSE LOCATION

A power input fuse is located at the top center of the MPU baseboard. This is the FIELDPAC's main power fuse.

A replacement fuse may be obtained from any local electronics supplier or may be ordered from the factory. See the FIELDPAC Parts List, in the back of this manual, for fuse part number and description.

After inserting a new fuse and assembling the station, apply power. Operate the station off-line for several minutes to be sure that a condition does not exist which will cause the replacement fuse to fail.

The plug-in AC power supply is equipped with its own fuse. This fuse can be replaced easily only when the power supply is removed from the FIELDPAC. Refer to “AC Power Supply” section for instructions to remove the power supply, and the “FIELDPAC Parts List”, in the back of this manual, for fuse part number and description.

6.4 TROUBLESHOOTING

If a problem develops upon initial installation, check the following:

Station's nameplate for input power requirements and installed options - refer to “Introduction” section

Installation wiring - refer to “Installation” section

Station's hard and soft configuration parameters - refer to “Function Block Description” section

Wiring of any associated external devices such as process transmitters - refer to “Installation” section

Field servicing experience indicates that most initial service incidents involve one or more of the above items.

6-2

October 1998

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