Installing the series sd31 controller, Removing the sd31 controller – Watlow Series SD31 PID with Optional Countdown Timer User Manual

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Wa t l o w S e r i e s S D 3 1

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C h a p t e r 2 I n s t a l l a n d W i r e

Installing the Series SD31 Controller

Make the panel cutout using the mounting template dimensions in this chapter.

Check that the rubber gasket lies in its slot at the back of the bezel. Insert the
controller into the panel cutout.

While pressing the bezel firmly against the panel, slide the mounting bracket
over the back of the controller.

If the installation does not require an IP65/NEMA 4X seal, slide the bracket
up to the back of the panel enough to eliminate the spacing between the gas-
ket and the panel.

For an IP65/NEMA 4X seal, use your thumb to lock the tabs into place while
pressing the controller from side to side. Don’t be afraid to apply enough pres-
sure to properly install the controller. If you can move the controller back and
forth in the cutout, you do not have a proper seal. The tabs on each side of the
bracket have teeth that latch into the ridges.

Each tooth is staggered at a different depth (from the front) so only one of the
tabs on each side is ever locked into the ridges at any time. Either the two
middle tabs or the two tabs diagonal from each other will be engaged.

If the matching tabs are not engaged, you do not have an IP65/NEMA 4X seal.
The space between the bezel and panel must be 0 to 0.48 mm (0 to 0.019 in)
maximum.

Removing the SD31 Controller

Remove the terminal cover and all the wiring connectors from the back of the
controller.

Slide a thin, wide tool (putty knife) under all three mounting tabs on the top
and then the bottom, while pushing forward on the back of the case. Be ready
to support the controller as it slides out of the panel cutout.

IP65/NEMA 4X
Seal Example

Gasket

Bezel

Panel

Mounting
Bracket

Mounting Tab

Mounting Ridge

Case

Arrows indicate the
direction of pull to
remove the
connectors.

Caution: Follow the installa-
tion procedure exactly to
guarantee a proper IP65/NE-
MA 4X seal. Make sure the
gasket between the panel
and the rim of the case is
not twisted and is seated
properly. Failure to do so
could result in damage to
equipment.