Rockwell Automation 7000L PowerFlex 7000 Medium Voltage AC Drive C Frame - Marine - Manual (Page 252)

4-76 Component Definition and Maintenance
7000L-UM302B-EN-P – June 2013 7000 ―C‖ Frame - Marine
The following are the temperature values for alarm and trip signal:
1. When coolant temperature is greater than 48°C (120°F), an alarm
signal is initiated. It can only be reset when temperature reaches
38°C (100°F).
2. When coolant temperature is greater than 62°C (144°F), a trip
signal is initiated. It can only be reset when the temperature
reaches 48°C (120°F).
3. When coolant temperature is less than 4°C (40°F), a trip signal is
initiated. It can only be reset when the temperature reaches 10°C
(50°F).
De-Ionizing Cartridge and Mesh Filter
The circuit shown in Figure 4.60 filters and de-ionizes the stream at a
rate of about 0.3 L/second (5 U.S. gallons per minute). This stream
can be isolated for cleaning and maintenance by closing the
incoming and outgoing valves. The filter is a 500-micron fine-mesh
type, which can be cleaned many times by rinsing in clean water.
The de-ionizing cartridge is a mixed-bed cartridge type, which can
be disassembled easily for de-ionizing cartridge replacement.
Reservoir
Level Switch (LS)
Level Shut Down Low (LSDL)
De-ionization
Cartridge DEI1
Mesh Filters
Figure 4.60 – De-ionizing Filter DEI1 (Rear View)
Pump Maintenance and
Replacement (cont.)