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WATLOW Series 988 User’s Manual 2.3
Installation and Wiring, Chapter 2
the mounting collar over the back of the control.
4. Loosen the mounting bracket screws enough to allow for the mounting
collar and panel thickness. Place each mounting bracket into the
mounting slots (head of the screw facing the back of the controller).
Push each bracket backward then down to secure it to the control
case. To guarantee a proper NEMA 4X seal, Series 986 and 988
units (vertical) must have the mounting brackets located on either
side of the unit. When installing Series 987 and 989 units (horizon-
tal) the brackets must be on the top and bottom of the unit.
5. Make sure the case is seated properly. Tighten the installation screws
firmly against the mounting collar to secure the unit. To ensure a
NEMA 4X seal, there should be no space between the bezel and
panel. Overtightening the screws will distort the case and make it diffi-
cult to remove or replace the controller.
6. Make sure the inside gasket is seated properly and not twisted.
Insert the controller chassis into its case and press the bezel until all
four tabs snap.
7. To release the mounting brackets, loosen the mounting bracket screws
and push the brackets forward, then pull it up and out.
ç
CAUTION:
Follow the installa-
tion procedure
exactly to guarantee
a proper NEMA 4X
seal. Make sure the
gasket between the
panel and the rim of
the case is not
twisted and is seat-
ed properly. Failure
to do so could
result in damage to
equipment.
Installation
C2.wc 5/14/1999 8:44 AM Page 2.3