Pos. Description
Pos. Description
1
Primary flow shutoff valve
6
Silencer - oil separator
2
Secondary shutoff
7
Recycle pump
3
Vacuum relief valve*
8
Water – air heat exchanger
4
Suction filter*
9
Expansion tank
5
Over-pressure safety relief valve
10
Exchanger inlet port
• Safety valves:
• Overpressure safety valve (pos. 5): mount it close to the pump. The valve flow must prevent the LC
420 pump from exceeding the absolute pressure of 2.0 bars or the maximum pressure allowed by
the system. Do not apply gate valves on the line.
• Vacuum control valve (pos. 6): install if necessary to limit the vacuum rate of the system.
• It is composed of:
• Centrifugal recycle pump.
• Heat exchanger with electric fans operated by a thermostat.
• Expansion tank.
The heat exchanger must dissipate the heat power indicated in paragraph “Performances”.
COOLING SYSTEM
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