Rockwell Automation Publication 7000L-UM301F-EN-P - March 2020
219
Commissioning
Chapter 4
2.
Open valves VI , V2, V3, V4, V5, V6, V7, V10, V11 , V12, V13, V14.
3.
Open V8 30° rotation to prevent water hammer during air purging.
4.
Fill system to above reservoir upper float switch.
5.
Close valves V1, V6, V7 to ensure coolant is cleaned through strainer
STR1 (if provided).
6.
Vent pumps by opening vent plugs on top of each pump. Open carefully to
prevent excess coolant leakage. Close vent plugs.
7.
Jog each pump for 1 second by manually pushing in contactor located on
panel above pumps. Ensure direction is clockwise when viewed from
motor side of pump. Check motor electrical connections if not clockwise.
8.
Start Pump 2 to circulate coolant and eliminate air in the system. If the
pump is noisy and sounds like gravel is being pumped, the pump may be
cavitating. Ensure V2 and V3 are open and strainer STR1 (if provided) is
not plugged.
9.
Continue to fill system to maintain level in reservoir. Eliminate air by
running Pump 2 for several hours. Air in the system can be observed in the
deionizer filter DEI 1 and strainer STR1 (if provided). Surging or
bubbling within the reservoir when pump is turned off indicates air is in
the system.
Figure 200 - Mesh Filters and De-ionizing Cartridge
TIP
Some drives may not have all valves.
WARNING:
Air must be purged from the coolant before drive startup or
damage to thyristors can result.
Reservoir
Mesh Filters
Level Switch (LS)
Level Shut Down Low (LSDL)
De-ionization Cartridge (DEI1)
