7
5.6.1 Cooling to heating
39
5.6.2 Heating to cooling
40
5.7 Service Operation
40
6. Purging
40
6.1 Importance of Purging
40
6.2 Purging Operation
41
6.3 Vacuum Measurement
42
6.4 Continuous Purging
42
6.4.1 Explanation on the system of continuous purging
42
6.4.2 Operation procedure
43
7. Cautions During Operation
44
7.1 Checking of Solution Concentration
44
7.2 De
crystallization
44
7.3 Recording of Operation Data
45
8. Prolonged Shut
down
45
CHAPTER 3 MAINTENANCE AND INSPECTION
9. Maintenance and Inspection
45
9.1 Daily Inspection
46
9.1.1 Vacuum maintenance of the unit
46
9.1.2 Purging operation
46
9.1.3 Recording operation data
46
9.1.4 Others
46
9.2 Periodical Inspection
46
9.3 Maintenance of Purge Pump
47
9.4 Cooling Water Control
50
9.4.1 Temperature control
50
9.4.2 Water quality control for cooling water
50
9.4.3 Control of chilled/hot water and cooling water line
during prolonged shut
down
51
9.5 Inspection and Cleaning of Tubes
51
9.5.1 Mechanical cleaning
52
9.5.2 Chemical cleaning
52
9.5.3 Cautions for use
54
9.6 Solution Control
54
9.7 Combustion Control
54
10. Troubleshooting and Countermeasure
57
10.1 No Drop of Chilled Water Temperature in Cooling Operation
57
10.2 No Rise of Hot Water Temperature in Heating Operation
57
10.3 Improper Combustion
58
10.4 Actuation of Protective Devices
58
10.5 In Case of Power Failure
59
10.6 In Case of Emergency Like Earthquake and Fire
59
Summary of Contents for HDFN-80-1400
Page 11: ...11 Fig 1 1 External View of Chiller heater...
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Page 20: ...20 Fig 3 5 Operation Flow Chart...
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Page 66: ...66 Fig 8 Lithium Bromide Temperature Specific Gravity Concentration Curve...
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