Routine Maintenance and Inspection
‑161‑
2. Remove the clamping hoop and
liquid level switch from the
water tank, as shown below.
3. Add coolant, install the liquid
level switch, and tighten the
clamping hoop.
4. Install the top cover on the AC
drive cabinet.
Replacing the coolant
Check the coolant once every year. Replace the coolant if it is deteriorated (yellowed),
discolored, or polluted.
Drain used coolant completely before refilling with fresh coolant. The procedure is as
follows:
1. Open the bottom cover of the AC
drive cabinet, prepare a 16 L
container, and place one end of
the drain hose of the bottom
pump in the container.
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