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Figure 45
Sound power levels
Discharge
Measurement conditions:
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.
Fan
Unit
speed
1
FWD 08
2
3
1
FWD 10
2
Remaining Oil Charge
3
1
1.
Add 0.95 litres (0.9kg) of oil to the motor cavity or
FWD 12
2
suction line prior to installing the compressor into
3
1
the chiller.
FWD 14
2
2.
If the unit is not equipped with suction-line isolation
3
valves, it should contain no charge. If it has isolation
1
FWD 20
2
valves, then the charge may be trapped in the
3
evaporator. In either case, the high side of the system
should not be pressurized.
Intake
3.
The oil-line shutoff valve must be open to allow the
oil to pass into the oil lines and the oil separator.
Measurement conditions:
4.
The oil charging port is a 6mm (¼") flare fitting with
Measurements taken at the horizontal air intake.
a schraeder valve that is on the side of the oil filter
housing. This is the port that must be used to add oil
Fan
into the compressor so that the filter and lines are full
Unit
speed
at the first start of the compressor.
1
FWD 08
2
5.
On single-compressor circuits, all the oil should be
3
put into the circuit through the oil-charging port on
1
the compressor filter housing. On two-compressor
FWD 10
2
3
circuits, put approximately ½ of the oil into the unit
1
through each of the two oil-charging ports on the two
FWD 12
2
compressors.
3
6.
Oil may be put into the unit using either of two
1
FWD 14
2
methods:
3
1
• Have the unit in vacuum. Note that the vacuum
FWD 20
2
3
connection should be made on the unit at the
service valve that is on the discharge line.
Hook up one end of the oil-charging fitting and
immerse the other end into the oil container. Let
the vacuum draw the required amount of oil into
the unit
• Have the unit at the same pressure as the oil.
Hook up one end of the oil-charging hose to the
oil charging fitting and the other end to an oil
pump. Use the pump to the draw oil out of the
oil container and push the required amount of oil
into the unit
Note: the compressor filter has an internal shutoff valve
that will prevent oil from entering the compressor while
the compressor is not running. Therefore, there is no
concern about flooding the compressor with oil.
RLC-SVX19E-GB
UNT-PRC002-GB
3
1
2
Power level in dB(A), per Hz frequency band
125
250
55
50
57
54
58
57
57
51
58
54
60
58
57
51
58
54
60
58
56
62
61
66
63
69
57
63
61
66
63
69
Power level in dB(A), per Hz frequency band
125
250
56
55
63
62
66
65
62
58
66
63
70
67
62
58
66
63
70
67
66
65
73
72
78
76
68
72
76
76
78
79
CAUTION! Use only Trane Oil 00048E in RTAF SE HE
and XE chillers and Trane OIL 00317 for HSE version in
the RTAF units to avoid any catastrophic damage to the
compressor or unit. Deduct from final charge, all charge
added for prelubrification to avoid over-charging.
Field Oil-Charging Procedure
Use the initial charging procedure under the following
circumstances;
• When virtually all of the oil has been removed
• If the oil charge is removed from the compressor
500
1000
2000
and oil system only, and the unit has been run for
42
37
37
more than 15 minutes
47
40
30
50
42
32
• If the oil charge is removed from the compressor
45
42
34
48
45
38
and oil system only, and the unit has been run
50
48
40
for more than 15 minutes. However, reduce the
45
42
34
amount of oil added to the unit by the normal
48
45
38
50
48
quantity of oil in the refrigeration system
40
50
48
39
55
53
47
Note: this procedure can be followed event with the
58
56
50
refrigerant charge isolated in the evaporating section of
51
49
40
55
53
47
the unit.
58
56
50
If small quantities of oil were removed to service
refrigeration components, such as the evaporator,
replace the oil that was removed back into the serviced
component prior to vacuum and recharge of the
refrigerant.
If oil was removed to service a compressor or change the
500
1000
2000
55
filter follow this procedure:
53
46
60
60
53
63
62
56
1.
If the compressor is a new compressor or has
55
58
51
been removed from the system and reworked, add
60
62
56
63
65
59
0.95 litre (0.90kg) of oil to the motor cavity prior to
55
58
51
installing the compressor into the chiller.
60
62
56
2.
Install the compressor in the system. Make sure that
63
65
59
65
65
the filter shutoff valve is closed. Other compressor
57
69
71
64
isolation valves may also be closed depending
73
75
69
upon the service that was completed. For example,
64
64
56
changing the oil filter would require the compressor
68
71
65
71
74
69
to be isolated and pulled into vacuum.
Note: Ensure that the compressor is not pressurized.
3.
Open the flare fitting on the oil-line shutoff valve.
4.
Open the flare fitting on the filter housing. This
is the port that must be used to put oil into the
compressor.
5.
Install one end of the charging hose on the oil
charging port (with the Schrader valve) and the other
on the oil canister.
6.
Lift the oil canister, or use a pump, to pour oil into
the filter housing.
7.
When oil comes out of the flare fitting on the oil-line
shutoff valve, the filter is full. Stop adding oil.
8.
Put the cap on the flare on the oil-line shutoff valve,
remove the charging hose, and put the cap back on
the flare on the filter housing.
Periodic Maintenance
Overall power
4000
8000
dB(A)
31
30
38
40
40
43
33
28
39
35
42
39
33
28
39
35
42
39
38
36
46
45
50
49
39
37
46
45
50
49
Overall power
4000
8000
dB(A)
45
42
53
53
55
57
48
44
55
52
59
57
48
44
55
52
59
57
50
46
59
57
64
63
52
50
61
61
66
66
46
50
53
48
51
54
48
51
54
56
60
63
57
60
63
57
64
67
61
66
69
61
66
69
68
74
78
69
75
78
11
119
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