Table of Contents
Advertisement
Control System
Unit operation is intergrally managed by the
microprocessor-based unit controller.
Sound power levels
Unit Operation
• Check that the chilled water pump(s) operates correctly
Discharge
• Start up the unit following procedure described in
Measurement conditions:
the unit controller user guide. The unit will operate
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
correctly when there is sufficient water flow. The
long) fixed to its discharge opening.
compressors will start up if the evaporator water
leaving temperature is above the control module
Fan
setpoint.
Unit
speed
1
Weekly start up
FWD 08
2
3
1
• Check that the chilled water pump(s) operates correctly
FWD 10
2
• Start up the unit following procedure described in the
3
1
unit controller user guide
FWD 12
2
3
Weekend shutdown
1
FWD 14
2
3
• If the unit needs to be shut down for a short period of
1
time, stop the unit following procedure described in
FWD 20
2
the unit controller user guide. (See «Clock» menu)
3
• If the unit is shut down for a longer period, see under
Intake
«Seasonal shutdown», below
• Ensure that all safeties are taken to prevent frost
Measurement conditions:
damages during negative ambient temperature
Measurements taken at the horizontal air intake.
• Do not put the general disconnect switches to
off, except if the unit is drained. Trane does not
Fan
recommend draining the unit, due to the fact that it
Unit
speed
1
increases corrosion
FWD 08
2
3
Seasonal shutdown
1
FWD 10
2
3
• Check water flows and interlocks
1
• Check glycol % in the chilled water circuit if glycol
FWD 12
2
3
presence is required
1
• Carry out leak test
FWD 14
2
3
• Carry out oil analysis
1
• Record operating pressures, temperatures, amperages
FWD 20
2
3
and voltage
• Check operation of machines/ compare conditions of
operation against original commissioning data
• Stop the unit following procedure described on the
unit controller user guide
• Ensure that all safeties are taken to prevent frost
damages during negative ambient temperature
• Fill out the visit log sheet and review with the
operator - Do not put the general disconnect switch to
off, except if the unit is drained
• Trane does not recommend draining the unit, due to
the fact that it increases corrosion
CG-SVX027D-GB
UNT-PRC002-GB
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
Seasonal start-up
• Check water flows and interlocks
• Check Ethylene glycol % in the chilled water circuit if
glycol presence is required
• Check operational setpoints and performance
• Calibrate controls
• Check operation of all safety devices
• Inspect contacts and tighten terminals.
• Megger the motor compressor windings
• Record operating pressures, temperatures, amperages
and voltage
1000
2000
• Carry out leak test
37
37
40
30
• Check configuration of unit control module
42
32
• Change the oil as required based upon results of the
42
34
oil analysis made during seasonal shutdown Get the
45
38
48
40
8 condition easurements at the same time, on each
42
34
circuit
45
38
48
40
• HP
48
39
• LP
53
47
56
50
• Suction temperature
49
40
53
47
• Discharge temperature
56
50
• Liquid temperature
• Water entering temperature
• Water leaving temperature
• Outdoor ambient temperature Then calculate the sub-
cooling and superheat. No diagnosis can be accurate
with one of these recordsmissing
• Check operation of machines/compare conditions of
1000
2000
53
46
operation against original commissioning data
60
53
• Fill out the visit log sheet and review with the operator
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
Operation
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
45
Hide quick links:
Advertisement
Table of Contents
