Grain Systems Bucket Elevtors, Conveyors, Series II Sweeps PNEG-1204 - Manual (Page 39)

34 PNEG-1204 Enclosed Belt Conveyors
Options
PRESSURE PLUG
SWITCH OPTION
1. Hazardous Location Precautions
Observe the regulations listed in the National
Electrical Code regarding equipment in
hazardous locations. In particular, insure
power is disconnected whenever the cover is
removed, insure the cover and case mating
surfaces are not damaged, and upon
completion, ensure cover screws are secure
and that no gaskets or sealer has been used
between the cover and case surfaces.
2. Output Contacts
Route wires through the 1/2" NPT conduit
entrance. No power is required to operate
the diaphragm bin monitors. All electrical
installation is done directly to the terminals of
the output switch. The switch terminals are
designated with “3” (COM-common),
“2” (N.C.-normally closed), and “1” (N.O.-
normally open). When the diaphragm is not
sensing material, the switch is in the normal
condition (i.e. N.C. contact is closed to COM,
and N.O. contact is open to COM). However,
when the diaphragm senses material, the
switch is opposite from normal condition
(i.e.N.C. contact is open to COM, and N.O.
contact is closed to COM). Be sure to comply
with all electrical specifications listed within
this bulletin.
Monitor MODEL GX, Part No.7-8150 - Neoprene
diaphragm, standard switch
ELECTRICAL INSTALLATION