Honeywell UDA2182 Guía de instalación

FAQ: UDA2182 Analyzer how to replace the bezel

assembly or the display cable?

Background

The display does not show any text or the display cable has been damaged, how can these faults be

fixed?

Damage has been caused to the display cable when opening and closing the door or the display has

failed due to a component failure.

Answer

Please carefully follow the procedure below and observe all warning or safety messages, if you

have any doubt then do not continue and contact Honeywell for assistance.

Part numbers:

Bezel Assembly p/n 51453518-502

Ribbon Cable p/n 50000556-501

WARNING

While the unit is powered, a potentially lethal shock hazard

exists inside the case. Do not open the case while the unit is

powered.

When working with Printed Wiring Boards, you must use a

grounded wrist strap.

Equipment Needed

Small flat-bladed screwdriver

Small Phillips head screwdriver

Accessing the Display Cable

With power off:

•

Loosen the four captive screws on the front of the bezel.

•

Grasp the bezel on the right side. Lift the bezel gently and swing the bezel open to

the left.

Future

Use

Option Board Location

Power

Supply/

Analog

Output/

Relay

Output

Board

Location

Input 1 Board

Location*

* 15 terminal or 10 terminal

Boards can be in either location

Input 2 Board

Location*

Power Supply Terminals Board Retainer

Ground Stud

Wiring Access Ports Ground

Screws

(5)

Inside case with door open

Figure 1 Printed Wiring Board Location

HPS Technical Support Page 3

Removing / Installing the Bezel assembly

Step

Action

ATTENTION!

Turn off the power to the analyzer.

More than one switch may be required to remove power.

Open the display board connector latch as shown below and remove Display

Cable from display board.

Also, slip the display cable out from under the plastic clip on the inside left of the

case.

Remove Phillips head screw in the center of the door hinge and remove the bar.

Hinge pins are now exposed. Swing them toward you, and then release the door by

sliding off the pins.

Slide the new Bezel Assembly (door) on the pins, replace bar and screw.

Insert the other end of the replacement display cable (foils should be facing

toward the display board) into the display board connector and close latch.

Close the Bezel and secure four captive screws to a torque value of .20Nm (1.5 Lb-in).

WARNING! Do not apply power until the bezel is closed.

HPS Technical Support Page 4

Removing / Installing Display Cable

Step

Action

ATTENTION!

Turn off the power to the analyzer.

More than one switch may be required to remove power.

Open the display board connector latch as shown below and remove Display Cable from

display board.

Also, slip the display cable out from under the plastic clip on the inside left of the case.

Label any wires attached to the input, option and power supply boards.

Refer to Figure 1 for the location of the terminal board retainer. Loosen the screws that hold

the retainer and slide the retainer left until the retainer tabs disengage from the terminal

boards.

Insert a screwdriver into the tab in the boards and gently slide all the boards out completely.

Look inside the case and locate the (4) Phillips head screws that attach the CPU board to

the case. Remove all (4) screws. Lift out the CPU board.

Holding the board firmly, grasp the display cable and pull it out from the connector.

Be careful handling the replacement cable. Do not touch or contaminate the exposed

foils.

Orient the cable foil side down toward the CPU board and align the edges with the

connector guides. Push the cable firmly into the connector. Make sure it is straight firmly

into the connector.

Re-install the CPU board into the case using the (4) Phillips head screws. Do not over

tighten as this may strip the threads out of the plastic case.

Slip the cable back into the plastic clip on the left side of the case.

HPS Technical Support Page 5

Insert the other end of the replacement display cable (foils should be facing toward the

display board) into the display board connector and close latch.

Replace any boards removed in step 4.

Slide the retainer to the left then slide the terminal board back into place. Slide retainer to

engage the tabs and tighten the screws.

Attach the wires removed in step 2.

Close the Bezel and secure four captive screws to a torque value of .20Nm (1.5 Lb-in).

WARNING! Do not apply power until the bezel is closed.

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