Watlow Series SD Limit - Manual (Page 11)

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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.
Note: Be careful not to over-
tighten the screws. This may
cause the mounting bracket
to fail. If the front bezel is
touching the front panel, the
mounting bracket is too
tight.
Installing the 1/4 DIN Series SD Limit
1. Make the panel cutout using the mounting template dimensions in this
chapter.
2. Check that the rubber gasket lies in its slot at the back of the bezel. Insert the
limit into the panel cutout. Slide the retention collar over the limit, with the
locating holes facing the back of the limit.
3. Slide the mounting bracket over the back of the limit with the screw tips
pointed toward the panel, aligning with the locating holes in the retention col-
lar. Push it gently but firmly over the limit until the hooks snap into the slots
at the front.
4. If the installation does not require an IP65/NEMA 4X seal, tighten the four
screws with the Phillips screwdriver just enough to eliminate the spacing be-
tween the rubber gasket and the panel.
For an IP65/NEMA 4X seal, tighten the four screws until the gap between the
bezel and panel surface is 0.5 mm (0.020 in) maximum. Make sure that you
cannot move it back and forth in the cutout. If you can, you do not have a
proper seal. Do not over-tighten. Over-tightening could damage the mounting
bracket.
Removing the 1/4 DIN Series SD Limit
1. Remove the terminal cover and all of the wiring connectors from the back of
the limit. Using the Phillips screwdriver, unscrew the four screws on the
mounting bracket (two on top, two on bottom) until they disengage from the
retention collar.
2. Slide the tip of a flat screwdriver between the limit and the center top side of
the mounting bracket. Rotate the screwdriver 90 degrees, stretching the
bracket away from the limit so the hooks on the bracket disengage from the
slots. Hold the bracket and press the limit forward slightly to prevent the dis-
engaged hooks from snapping back into the slots.
3. Repeat this operation to disengage the hooks on the bottom side of the mount-
ing bracket.
4. Press with one or two fingers on the lower half of the back of the unit so that
the limit slides forward toward the panel. Hold the bracket steady; do not pull
back. Be ready to support it as it comes through the front panel.
Gasket
Bezel
Panel
Retention
Collar
Mounting
Bracket
Hook
Arrows indicate the
direction of pull to
remove the
connectors.
Locating Hole
Slot
Case
Wa t l o w S e r i e s S D L i m i t
■
9
■
C h a p t e r 2 I n s t a l l a n d W i r e
Installing and mounting
requires access to the
back of the panel.
Tools required:
one #2 Phillips screwdriver
Tools required:
• one #2 Phillips screwdriver
• one flat-head screwdriver