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Table 5 – Operating Conditions at Minimum Load R1234ze
Description
Evaporator approach
Condensing approach
Sound power levels
Subcooling
Discharge
EXV percent open
Measurement conditions:
* 0.5°C for new unit.
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
long) fixed to its discharge opening.
Annual Maintenance
Fan
WARNING: Hazardous Voltage!
Unit
speed
Disconnect all electric power, including remote
1
FWD 08
2
disconnects before servicing. Follow proper lockout
3
/ tagout procedures to ensure the power can not be
1
inadvertently energized. Failure to disconnect power
FWD 10
2
before servicing could result in death or serious injury.
3
1
• Shut down the chiller once each year to check the
FWD 12
2
3
following:
1
• Perform all weekly and monthly maintenance
FWD 14
2
procedures.
3
1
• Check the refrigerant charge and oil level. Refer to
FWD 20
2
"Maintenance Procedures " . Routine oil changing is not
3
necessary on a hermetic system.
Intake
• Have a qualified laboratory perform an oil analysis to
determine system moisture content and acid level.
Measurement conditions:
IMPORTANT NOTE: Due to the hygroscopic properties
Measurements taken at the horizontal air intake.
of the POE oil, all oil must be stored in metal containers.
The oil will absorb water if stored in a plastic container.
Fan
Unit
speed
• Check the pressure drop across the oil filter. Refer to
1
"Maintenance Procedures " .
FWD 08
2
3
• Contact a qualified service organization to leak check
1
the chiller, to inspect safety controls, and inspect
FWD 10
2
electrical components for deficiencies.
3
1
• Inspect all piping components for leakage and/or
FWD 12
2
damage. Clean out any inline strainers.
3
1
FWD 14
2
3
1
FWD 20
2
3
UNT-PRC002-GB
RLC-SVX023A
Power level in dB(A), per Hz frequency band
125
250
500
55
50
42
57
54
47
58
57
50
57
51
45
58
54
48
60
58
50
57
51
45
58
54
48
60
58
50
56
62
50
61
66
55
63
69
58
57
63
51
61
66
55
63
69
58
Power level in dB(A), per Hz frequency band
125
250
500
56
55
55
63
62
60
66
65
63
62
58
55
66
63
60
70
67
63
62
58
55
66
63
60
70
67
63
66
65
65
73
72
69
78
76
73
68
72
64
76
76
68
78
79
71
Periodic Maintenance
Condition
*< 4°C (non-glycol applications)
*< 4°C
1-2°C
10-20% open
• Clean and repaint any areas that show signs of
corrosion.
• Test vent piping of all relief valves for presence of
1000
2000
37
37
refrigerant to detect improperly sealed relief valves.
40
30
Replace any leaking relief valve.
42
32
42
34
• Inspect the condenser tubes for fouling; clean if
45
38
necessary. Refer to "Maintenance Procedures " .
48
40
• Check to make sure that the crank case heater is
42
34
45
38
working.
48
40
48
39
Scheduling Other Maintenance
53
47
56
50
49
40
Depending on chiller duty, contact a qualified service
53
47
organization to determine when to conduct a complete
56
50
examination of the unit to determine the condition of the
compressor and internal components.
1000
2000
53
46
60
53
62
56
58
51
62
56
65
59
58
51
62
56
65
59
65
57
71
64
75
69
64
56
71
65
74
69
Overall power
4000
8000
dB(A)
31
30
46
38
40
50
40
43
53
33
28
48
39
35
51
42
39
54
33
28
48
39
35
51
42
39
54
38
36
56
46
45
60
50
49
63
39
37
57
46
45
60
50
49
63
Overall power
4000
8000
dB(A)
45
42
57
53
53
64
55
57
67
48
44
61
55
52
66
59
57
69
48
44
61
55
52
66
59
57
69
50
46
68
59
57
74
64
63
78
52
50
69
61
61
75
66
66
78
11
39
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