PCU12005 datasheet(13/96 Pages) REDLION

13 / 96 page

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, 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

sealed 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

necessary 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 ship 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 bezel 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.

OUTPUT MODULES

The main control, optional Alarm, optional Secondary output and optional

Valve Position control output sockets must be fitted with the appropriate

output module. Output modules are shipped separately and must be installed

by the user.

Output Module Restrictions

With some models, the Alarm outputs and Valve Position outputs share the

same common terminal. When using these models, the same type of output

modules should be installed in these positions.

-5-

Figure 2, Bezel Assembly

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