Red-lion TCU User Manual download pdf (Page 13)

Unit Removal Procedure

To remove a NEMA 4X/IP65 or standard unit from the panel, first unscrew

and remove the panel latch screws. Insert flat blade screwdrivers between the

latch and the case on the top and bottom of the unit, so that the latches

disengage from the grooves in the case. Push the unit through the panel from

the rear.

Removing Bezel Assembly

The bezel assembly, shown in Figure 2, must be removed from the case to

install or replace output modules, to select the input sensor type, or to set the

115/230 VAC selector switch. Disconnect power to the unit and to the output

control circuits to eliminate the potential shock hazard when removing the

bezel assembly. To remove a standard bezel assembly (without bezel securing

screws), press the latch under the lower bezel lip and withdraw the bezel

assembly. To remove the s ealed NEMA 4X/IP65 bezel assembly, loosen the

two bezel securing screws until a slight “click” is felt (the screws are retained

in the bezel) and withdraw the assembly.

Caution: The bezel assembly contains electronic circuits that are damaged by

static electricity. Before removing the assembly, discharge stray static

electricity on your body by touching an earth ground point. It is also

important that the bezel assembly be handled only by the bezel itself.

Additionally, if it is n ecessary to handle a circuit board, be certain that hands

are free from dirt, oil, etc., to avoid circuit contamination that may lead to

malfunction. If it becomes necessary to sh ip the unit for repairs, place the unit

in its case before shipping it.

Installing Bezel Assembly

To install the standard bezel assembly, insert the assembly into the case

until the b ezel latch snaps into position.

To install the NEMA 4X/IP65 bezel assembly, insert the assembly into the

case and tighten the bezel screws uniformly until the bezel contacts the case

and then turn each screw another half turn to insure a watertight seal (do not

over-tighten screws).

Caution: When substituting or replacing a bezel assembly, be certain that it is

done with the same model using the same Output Modules. Damage to the

controller may result if the unit’s output modules are not the same. A NEMA

4X/IP65 and a standard bezel assembly are NOT interchangeable.

Figure 2, Bezel Assembly

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Red-lion TCU User Manual Page 13