HRX-OM-K003
Chapter 7 System Maintenance
HRW Series 7.3 Storage
7.2.2 Quarterly inspection
Table 7-3 Quarterly Inspection
Circulating fluid is to be drained for check.
Fluid should be free of particles, moisture and foreign substances.
For ethylene glycol solution, confirm that the concentration falls
within the specified range.
Recommended to replace the water.
Facility water quality should fall within the standards specified.
Ventilation hole and
electrical parts
No particles and dust should be present.
7.3 Storage
The following should be performed for system long-term storage.
1. Drain the circulating fluid. See section 7.3.1 “Draining of circulating fluid out of tank” on page 7-4 for
details.
2. Drain the facility water. See section 7.3.2 “Draining of facility water” on page 7-5 for details.
3. Cover the system with a plastic sheet for storage.
Quarterly inspection requires an advance lockout/tagout of this
system. See section 1.5.3 “Lockout/Tagout” in “Chapter 1 Safety” on
page 1-10 for details.
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