GSI Group 1200 Bu/Hr, Owner'S Manual, Page: 26 / 76

26 PNEG-1355 4" & 5" Air Systems
7. ASSEMBLY
7. Tripped Overload Indicator Light: This lamp will light up when any of the motor thermal
overloads in the control box has tripped. The overloads for all three circuits (Aux, Airlock,
and Blower) must have thermal overloads installed to operate the system. See Thermal
Unit chart Drawing on
page 27 .
8. 5 Amp Fuse: A five (5) Amp fuse protects the electrical components in the control box.
9. Control Switches: The operation of the blower, airlock and auxiliary equipment of the air
system is controlled by placing these switches in the “Auto”, “Manual” or “Off” position.
10. Automatic Control Terminals: When the air system is ready to run (i.e., the control ready
light is on), the system can then be started and run by completing the circuit between
terminals one (1) and two (2). The blower, airlock or auxiliary equipment will not run in the
automatic mode unless terminals one (1) and two (2) are connected. For example, a
closing set of contacts in a dryer control box would complete the circuit between terminals
one (1) and two (2) and automatically start the air system.
(See Figure 7M) .
No voltage should be supplied to terminals one (1) and two (2). See the diagram
on Page 28-33 and drawing below.
11. Remote Shut-Down Control: A remote piece of equipment can be caused to shutdown with
the air system by putting terminals three (3) and four (4) in series with the control circuit of
the remote equipment. This circuit has a maximum current rating of 10 Amps. The circuit
between terminals three (3) and four (4) is closed whenever the control circuit ready light
is on, regardless of the position of the control switches. (“AUTO”, “OFF” or “ON”) See the
Diagram on
Page 28-33 and page 38
Figure 7M
WARNING
Steps 10 & 11: Automatic Control and Remote Shut-Down Control