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Periodic Maintenance
Figure 43 – Oil system schematic: Oil level measurement.
FWD
Power supply
Capacities
Cooling capacity on water (1)
Heating capacity on water (2)
Fan motor
Fan power input (3)
Current amps (3)
Start-up amps
Air flow
minimum
nominal
maximum
Main coil
Water entering/leaving connections
Electric heater (accessory for blower only)
Electric power supply
Heating capacity
Hot water coil (accessory for blower only)
Heating capacity (4)
G2 filter (filter box accessory)
Quantity
Dimensions ( LxWxth)
G4 filter (filter box accessory)
Quantity
Dimensions ( LxWxth)
Condensate pump (accessory)
Water flow - lift height
Not available for FWD30 and FWD45
Sound level (L/M/H speed)
Sound pressure level (5)
1 = Oil separator
Sound power level (5)
2 = Valve
Unit dimensions
Width x Depth
3 = 1/4" refrigeration hose
Height
4 = Sight glass
Shipped unit dimensions
5 = Minimum oil level
Width x Depth
6 = Maximum oil level
Height
Weight
Colour
How to measure the oil level:
Recommended fuse size
Unit alone (aM/gI)
1.
Unit with electric heater (gI)
Use the oil drain valve on the oil line and the
service valve on the oil separator (bottom side). This
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
measurement can be made, when the circuit is not
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
(3) At high speed with nominal air flow.
running. Note: the bottom plate of the oil separator is
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
approximately 25mm thick.
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
2.
The initial oil charge should be approximately at the
Heat exchanger operating limits:
level in of the above chart. This is the approximate
FWD:
*water temperature: max 100° C
oil level if all the oil is in the oil lines, filter, and oil
*absolute service pressure: min 1 bar/max 11 bars
sump, and the unit is in vacuum so that there is no
Accessories - Hot water coil:
refrigerant dissolved in the oil.
*water temperature: min. +2° C/max. 100° C
3.
After the unit has run for a while, the oil level in the
*absolute service pressure: min 1 bar/max 11 bars
sump can vary greatly. However, if the unit has run at
"normal" conditions for a long time, the level should
resemble the level in the above chart: Minimum level
should be 50 mm, maximum should be 115 on 8" oil
separators (compressors type M or L), 140 mm on
10" oil separators (compressor typ N) and 147 mm
on 12" oil separators. However excessive oil in the
system will deteriorate the evaporator approach
temperature.
118
4
Technical Data
The field charging procedure depends on the
circumstances that resulted in the need for oil charge.
1.
08
(V/Ph/Hz)
(kW)
5,2
2.
(kW)
6,3
(type)
(kW)
0,23
(A)
1,1
(A)
3,2
3.
(m
/h)
490
3
(m
/h)
820
3
Prelubrication
(m
/h)
980
3
(type)
Prior to the oil charging procedure, a small amount of oil
(Dia)
3/4"
shall be injected in the port labeled "1" on Figure 26 Oil
pushed into this location drains into the discharge port,
(V/Ph/Hz)
230/1/50
(kW)
2/4
which allows the oil to effectively cover the rotor end
faces and rotor tips.
(kW)
6,3
2
The only issue is that if the schraeder is not present
(mm)
386x221x8
on this port, the 7/16 o-ring boss plug normally in this
location will have to be replaced by a 7/16-schraeder
-
fitting (Trane part number VAL07306).
(mm)
-
(type)
(l/h - mm)
If this part is not available quickly, schraeder fitting 2 or
3 (Figure 26) could be removed and put in location 1. The
plug would then replace the removed schraeder fitting.
(dB(A))
36/40/43
(dB(A))
46/50/53
1.
(mm)
890 x 600
(mm)
250
2.
(mm)
933 x 644
3.
(mm)
260
4.
(kg)
32
Option: pump in ½ litre of oil. In any case, never
(A)
8/16
complete the entire oil charge by this port. This could
(A)
16 (2kW),25 (4kW)
lead to drastic damages for the compressor. Oil injected
should be preheated.
5. Remove the oil line.
Figure 44
Some services procedures may result in loss of
small quantities of oil that must be replaced (oil
12
20
analysis, compressor filter replacement, re-tubing
230/1/50
the evaporator, and so forth).
8,3
15
Additionally, some maintenance procedures
11,9
18,9
may result in virtually all the oil being removed
2 x direct drive centrifugal
(compressor motor burn or total removal of the
0,46
0,65
2,2
3,1
charge to trouble shoot a unit).
5,5
9,3
Finally, leaks may result in a loss of oil that must be
replaced.
980
1400
1650
2300
1970
2600
ISO R7 rotating female
3/4"
1 1/2"
230/1/50 or 400/3/50
400/3/50
8
10
12
17,4
2
486x271x8
586x321x8
2
486x264x48
586x314x48
Centrifugal
24 - 500
38/41/44
46/50/53
48/51/54
56/60/63
Add 7/16 schraeder port where plug is today
1090 x 710
1290 x 820
(Figure 26).
300
350
Pull compressor and unit into Vacuum.
1133 x 754
1333 x 864
Connect oil line to port (Figure 25).
310
360
Let vacuum draw in ½ litre of oil.
46
61
galvanised steel
8/16
8/16
40 (230V),3*16 (400V)
3*20
1
30
45
18,8
30,1
20,9
38,2
1,04
1,51
4,7
5,5
14,1
16,5
1800
2700
3000
4500
3600
5400
1 1/2"
1 1/2"
400/3/50
400/3/50
12
12
22,4
34,5
2
2
2
586*421*8
586*621*8
2
2
2
586*414*48
586*614*48
47/52/57
47/52/58
57/62/67
57/62/68
1290 x 970
1290 x 1090
450
650
1333 x 1008
1333*1133
460
660
76
118
8/25
8/25
3*25
3*25
RLC-SVX19E-GB
UNT-PRC002-GB
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