Compressor Service Information; Fwd; Not Available For Fwd30 And Fwd45 - Trane Sintesis Advantage CGAF Series Installation Operation & Maintenance

Compressor Service Information

Compressor Electrical Connections
It is very important that DSH compressors used in Trane
Model CGAF chillers and CXAF Heat Pumps are wired
correctly for proper rotation. These compressors will not

FWD

tolerate reverse rotation. Verify correct rotation/phasing
Power supply
using a rotation meter.
Capacities
Cooling capacity on water (1)
Proper phasing is clockwise, A-B-C. If wired incorrectly
Heating capacity on water (2)
a DSH compressor will make excessive noise, will not
Fan motor
pump and will draw about half the normal current. It will Fan power input (3)
Current amps (3)
also become very hot if allowed to run for an extended
Start-up amps
period.
Air flow
minimum
nominal
Notice: Do not "bump" the compressor to check rotation
maximum
Main coil
as incorrect rotation could cause compressor motor
Water entering/leaving connections
failure in as little as 4 to 5 seconds!
Electric heater (accessory for blower only)
Oil Level
Electric power supply
Heating capacity
Hot water coil (accessory for blower only)
To check compressor oil level, refer to the label near the
Heating capacity (4)
compressor sight glass. The compressor(s) must be off.
G2 filter (filter box accessory)
Wait three minutes. With tandem or triple compressors
Quantity
Dimensions ( LxWxth)
the oil level will equalize after shutdown. Compressor
G4 filter (filter box accessory)
oil level should be no lower than the bottom of the
Quantity
sight glass and no more than a full sight glass. When
Dimensions ( LxWxth)
operating, each compressor in a tandem or trio set may Condensate pump (accessory)
Water flow - lift height
have a different oil level. The oil level may not be in the

Not available for FWD30 and FWD45

sight glass, but it must be visible through the sight glass.
Sound level (L/M/H speed)
Sound pressure level (5)
Sound power level (5)
Oil Fill, Removal and Capacity
Unit dimensions
Width x Depth
The Model DSH compressors have an oil charging
Height
valve with a dip tube that goes to the bottom of the
Shipped unit dimensions
Width x Depth
compressor. This can be used to add or remove oil from
Height
the compressor.
Weight
Colour
Care must be taken to prevent moisture from entering
Recommended fuse size
the systems when adding oil. Note that the POE oil used
Unit alone (aM/gI)
in this product is very hygroscopic and easily absorbs
Unit with electric heater (gI)
and retains moisture. Moisture is very difficult to remove
(1) Conditions: Water entering/leaving temperature: 7/12 °C, Air inlet temperature 27/19°C DB/WB - Nominal air flow
from oil using vacuum. Also note that once the seal on a
(2) Conditions: Water entering/leaving temperature: 50/45 °C, Air inlet temperature 20°C DB - Nominal air flow
container of POE oil is opened, the oil must be used.
(3) At high speed with nominal air flow.
(4) Water entering/leaving temperature 90/70 °C, air inlet temperature 20 °C DB, Nominal air flow.
Use only Trane OIL0057 (3.8 l) or OIL00058E (18.9 l).
(5) A rectangular glass wool duct 1m50 long is placed on the blower.The measurement is taken in the room containing the blower unit.
These are the same oil but different container size.
Heat exchanger operating limits:
Do not use any other POE oil.
FWD:
*water temperature: max 100° C
NOTE: Never reuse oil.
*absolute service pressure: min 1 bar/max 11 bars
Accessories - Hot water coil:
Oil Testing
*water temperature: min. +2° C/max. 100° C
*absolute service pressure: min 1 bar/max 11 bars
We recommend performing a complete oil analysis at
least once a year with the Trane laboratory specifically
dedicated to oil analysis for Trane equipment. It
provides an in-depth view of both compressor and
refrigerant circuit conditions including presence of water,
wear particles, viscosity, acidity or dielectric data. If
unacceptable wear conditions develop, a change in the
characteristics of the oil will be evident. Minor problems
can be detected and repaired before they become major
problems.
4 68
Technical Data
Oil Equalizer Line
DSH Compressors
The oil equalizer line is equipped with a Rotolock fitting
for easy removal. Torque value for tightening these fitting
08
is 145 N.m. Recover the system refrigerant charge and
(V/Ph/Hz)
Drain the oil to a level below the oil equalizer tube fitting
(kW) 5,2
before removing the oil equalizer line. This must be done
(kW) 6,3
on both compressors. Use the oil drain valve on the
(type)
(kW) 0,23
compressor. If the oil is drained below the level of the
(A) 1,1
oil level sight glass, it will be below the oil equalizer line
(A) 3,2
level. Pressurize the low side of the compressor using
nitrogen to help drain the oil. No more than 70 kPa of
(m /h) 490
3
(m /h) 820
3
pressure will be needed.
(m /h) 980
3
Tandem and Triple Compressor
(type)
(Dia) 3/4"
Suction Restrictors
(V/Ph/Hz) 230/1/50
(kW) 2/4
Since most tandem and triple compressor sets use
unequal size compressors, these combinations require
(kW) 6,3
the use of a restrictor in the suction line of one or more
2 compressors in order to provide correct oil level balance
(mm) 386x221x8
between compressors when they are operating.
-
Compressor Replacement
(mm) -
(type)
(l/h - mm)
If the CGAF chiller / CXAF Heat Pump suffers a failed
compressor, use these steps for replacement:
(dB(A)) 36/40/43
Each compressor has lifting eyes. Both lifting eyes must
(dB(A)) 46/50/53
be used to lift the failed compressor. DO NOT LIFT A
COMPRESSOR USING A SINGLE LIFTING EYE. Use
(mm) 890 x 600
(mm) 250 proper lifting techniques, a spreader bar and rigging as
for lifting both compressors simultaneously.
(mm) 933 x 644
After a mechanical failure of a compressor, it is
(mm) 260
(kg) 32
necessary to change the oil in the remaining compressor
and also replace the liquid line filter drier. After an
electrical failure of a compressor, it will also be
(A) 8/16
(A) 16 (2kW),25 (4kW)
necessary to change the oil in the remaining compressor,
replace the liquid line filter drier and add a suction filter
drier with clean-up cores.
Note: Do not alter the refrigerant piping in any way as
this can affect compressor lubrication.
Refrigerant System Open Time
Model CGAF chillers / CXAF Heat Pump use POE oil and
therefore refrigerant system open time must be kept to a
minimum. The following procedure is recommended:
12 20
230/1/50
8,3 15
11,9 18,9
2 x direct drive centrifugal
0,46 0,65
2,2 3,1
5,5 9,3
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 2
486x271x8 586x321x8
2 2
486x264x48 586x314x48
Centrifugal
24 - 500
38/41/44 46/50/53
48/51/54 56/60/63
1090 x 710 1290 x 820
300 350
1133 x 754 1333 x 864
310 360
46 61
galvanised steel
8/16 8/16
40 (230V),3*16 (400V) 3*20
Leave a new compressor sealed until it is
•
ready to be installed in the unit. Maximum
system open time is dependent upon ambient
conditions, but do not exceed one hour open
time.
• Plug the open refrigerant line to minimize
moisture absorption. Always change the liquid
line filter drier.
• Evacuate the system to 500 microns or below.
• Do not leave POE oil containers open to the
atmosphere. Always keep them sealed.
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
586*421*8 586*621*8
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
CG-SVX039B-GB UNT-PRC002-GB