Start-Up; Fwd 08; Evaporative Humidifiers/Air Washers - Trane CLCF Climate Changer Manual

Start-up

Following the completion of all check list items, start up the unit for a test run.
CAUTION! To conduct a run test that involves the measurement of motor and fan performances, the unit must be
connected to the complete installation.
Sound power levels
CAUTION! All access doors must be closed to avoid overflow in the installation that could result in motor damage
and to avoid safety risks to people.
Discharge
CAUTION! Before starting the fan, open all dampers. The fan must not be started if the dampers are closed.
After switching on power, check that the direction of the fan rotation is correct. In addition, the running power
Measurement conditions:
consumption should be checked on all phases and compared with the power data indicated on the motor nameplate.
Measurements taken in a room adjacent to the room containing the FWD, at the outlet of the rectangular duct (1.5 m
If the running power is too high, there is probably a faulty connection and the unit must be switched off immediately.
long) fixed to its discharge opening.
Check the fan and motor bearings for undue noise.
Fan
Measure the air volume and external pressure.
Unit speed
The following two situations may arise:
1

FWD 08

2
1. The air volume is too low as the real external static pressure is higher than the specified one.
3
1
Recommended action: increase the air volume by changing or adjusting the belt drive pulleys.
FWD 10 2
Please contact your local Trane sales office to get a proper belt drive selection.
3
1
CAUTION! Do not increase the fan speed beyond the motor power rating allowed limit.
FWD 12 2
CAUTION! Increasing the fan speed should be done only after a careful study of the operating point on the 3
1
appropriate fan curve.
FWD 14 2
Contact your local Trane sales office for a proper selection.
3
1
2. The air volume is too high. The reason is that the real external static pressure is lower than the specified one.
FWD 20 2
3
Result: Higher air volume involves a high motor absorbed power increase.
CAUTION! Motor overload may result in motor damage.
Intake
Recommended action: change the belt drive pulleys or reduce the fan rpm according to the fan curve or reduce the
air volume by the use of dampers.
Measurement conditions:
Measurements taken at the horizontal air intake.
Ask a proper transmission selection from your local sales office.
In extreme cases, changing the motor, fan, and drive may be necessary.
Fan
The adjustment of variable belt drive pulleys must be carried out only when the unit is electrically disconnected,
Unit speed
1
ensuring that the system is not restarted unexpectedly.
FWD 08 2
Remove the pulley safety screws and turn through half of the pulley circumference. Then retighten the screws and
3
readjust the pulley belt tension (see Figure 21.) 1
FWD 10 2
Following any change in the pulley ratio, the motor power consumption must be rechecked. The nominal output
3
rating quoted on the name plate must not be exceeded.
1
FWD 12 2
If airflow does not conform to the specifications, please contact your local Trane sales office.
3
1
Note: The unit structure is designed so that it will not suffer permanent deformation up to a positive pressure
FWD 14 2
or negative pressure of 2000 Pa. To respect these limits, fan operation should be controlled depending on all
3
interception devices installed in the plant and/or in the air handling unit.
1
FWD 20 2
3

Evaporative Humidifiers/air washers

Water tanks must be thoroughly cleaned. Any building grit in the system may result in subsequent pump failure. Any
warranty claims in this context will not be accepted. Check that the pump suction filter basket, spray pipes, washer
nozzles are correctly seated. Check the washer sieve and clean as necessary.
Fill the tank and siphon with clean water and adjust the float valve so that closure occurs 2-3 cm below the overflow
level. In any case the suction pipe must be effectively vented. Then check that the pump rotation direction is correct.
Measure the absorbed power and check that it matches the data indicated on the pump name plate.
CAUTION! : The pump must not be dry run to avoid any risk of overheating.
No warranty claims will be acknowledged if pump or pump motor damage is caused by a dry run.
AH-SVX03C-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
Commissioning procedure
1000 2000 4000
37 37 31
40 30 38
42 32 40
42 34 33
45 38 39
48 40 42
42 34 33
45 38 39
48 40 42
48 39 38
53 47 46
56 50 50
49 40 39
53 47 46
56 50 50
1000 2000 4000
53 46 45
60 53 53
62 56 55
58 51 48
62 56 55
65 59 59
58 51 48
62 56 55
65 59 59
65 57 50
71 64 59
75 69 64
64 56 52
71 65 61
74 69 66
Overall power
8000 dB(A)
30 46
40 50
43 53
28 48
35 51
39 54
28 48
35 51
39 54
36 56
45 60
49 63
37 57
45 60
49 63
Overall power
8000 dB(A)
42 57
53 64
57 67
44 61
52 66
57 69
44 61
52 66
57 69
46 68
57 74
63 78
50 69
61 75
66 78
11
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