Harris Atlas DVL400, Technical Manual

Page: 24 / 180

1-10 888-2473-001 2/25/03
WARNING: Disconnect primary power prior to servicing.
Section 1 Introduction ATLAS Series™
1.2.6 Cooling System
The Atlas Series™ transmitter uses a 50/50 glycol liquid cooling system to remove
the majority of the heat away from the transmitter but also has cabinet flushing fans
to remove residual cabinet heat. A simplified block diagram of the liquid cooling
system is shown in Figure 1-6. A simplified diagram of the liquid cooling system
inside the transmitter cabinet is shown in Figure 1-7. The cooling system basically
consists of:
a. Cooling System Control Panel
b.
Pump Module
c.
Heat Exchanger
d.
Transmitter Cold Plates
1.2.6.1 Cooling System Control Panel
The cooling system control panel controls the pump module and the heat exchanger
and is the interface to the transmitter control system. It uses very basic relay logic
for reliable operation. The cooling system control panel is connected to the External
I/O board in the Atlas Transmitter for monitoring and control. It also supplies ac
power to the pump module and the heat exchanger and interfaces the fault and status
information from these units to the transmitter.
The cooling system control panel, shown in Figure 1-5 below, has local controls on
the front which allow manual selection of pump A or optional pump B and selection
of Remote/Local control. It also has the following status indicators:
•
Remote
•
Local
•
Interlock
•
Fan A ON
•
Fan B ON
•
*Pump A ON
•
*Pump B ON
•
Pump A Preset
•
Pump B Preset
•
*Coolant Fault
•
*Coolant Low
•
Power
Figure 1-5 Cooling System Control Panel