Trane RTUB 207-224 manuale d’uso

Installation Oper ation Maint enance R TUB 207 -224 - Liquid c hillers with helical r otary compr essors R TCA 1 08-216 - Remot e air -cooled condenser RLC-S VX03A -E4[...]

RLC-SVX03A-E4 Fo rewo rd These installation, operation and maintenance instructions are given as a guide to good practice in the installation, putting into service, operation, and maintenance by the user of T rane R TUB and R TCA units. They do not contain full service procedures necessary for the continued successful operation of this equipment; T[...]

RLC-SVX03A-E4 3 Cont ents Foreword 2 W arranty 2 Reception of unit 2 Cautions and warnings 2 Refrigerant 2 Gener al inf or mation Unit Inspection 5 Inspection Chec klist 5 Loose P arts In ventory 6 Description of the Unit 6 General Data R TUB 7 General Data R TCA 8 Installation Installation Responsibilities 9 Storage 9 Special Lif ting and Moving I[...]

4 Oper ation Pre-star t Chec kout 21 Unit V oltage P ower Supply 21 Unit V oltage Imbalance 21 Unit V oltage Phasing 21 W ater System Flow Rates 22 W ater System Pressure Drop 22 Daily Unit Star t-up Procedure 22 Seasonal Unit Star t-up Procedure 23 T emporary Shutdown and Restar t 23 Extended Shutdown Procedure 23 System R estart af ter Extended S[...]

RLC-SVX03A-E4 5 Gener al infor mation This manual describes installation, operation, and maintenance of R TUB and R TCA units. A separate manual is available for the use and maintenance of the R TUB controls (UCM-CLD). Unit Inspection When the unit is delivered, verify that it is the correct unit and that it is property equipped. Compare the inform[...]

6 • Notify the T rane sales representative and arrange for repair . Do not repair the unit, however , until damage is inspected by the carrier's representative. Loose P arts In ventory Chec k all the accessories and loose parts that are shipped with the unit against the shipping list. Included in these items will be water vessel drain plugs,[...]

7 T able 1 - General data - R TUB Unit size 207 208 21 0 21 1 212 214 Compressor T ype/quantity Helical rotary/2 Nominal size (tons) 35/35 40/40 50/50 60/50 60/60 70/70 Ev aporator Evaporator Model E G 120 E G 120 EG 1 40 E G 170 E G 170 E G 20 0 W ater Storage (l) 1 05 1 05 365 220 220 20 0 Minimum Flow (l/s) 4.5 4.5 6.0 7 .0 7 .0 9.0 Maximum Flow[...]

RLC-SVX03A-E4 8 Gener al infor mation T able 2 - General data - R TCA Unit size 1 08 1 09 1 1 1 1 13 1 15 1 16 Condenser Condenser type Aluminium fins/copper tubes Fin spacing (fins/ft) 168 168 144 168 168 1 44 Frontal surface area (m²) 5.7 6.9 6.9 1 1 .3 1 1 .7 13.7 Airflow Standard unit (m 3 /h) 42500 5040 0 6930 0 77200 8470 0 9850 0 Low noise [...]

RLC-SVX03A-E4 9 Installation r esponsibilities Generally , the contractor must do the following when installing an R TUB/RTCA unit. • Install the units on a flat foundation, level (within 1/4" [6 mm] across the length of the unit), and strong enough to support unit loading. • Install the units per the instructions contained in the Installa[...]

10 Special Lif ting and Moving Instr uctions A specific lifting method is recommended as follows: 1 . F our lifting points are built into the unit. 2. Slings and spreader bar to be provided by rigger and at tached to the four lifting points. 3. Minimum rated lifting capacity (vertical) of eac h sling and spreader bar shall be no less than the tabul[...]

11 Installation condensation coils must be protected from side winds when their speed exceeds 16 km/h. P osition the unit above the average height of snow observed in the region where it is installed. Never install temporary or permanent objects (tarp or roof) over the unit, because recycling of hot air would reduce the capacity of the condensation[...]

12 Drainag e Pro vide a large-capacity drain for water vessel drain-down during shutdown or repair . The evaporator is provided with a drain connection. All local and national codes apply . The vent on the top of the evaporator water bo x is provided to prevent a vacuum, by allowing air into the evaporator for complete drainage. Releasing the Nitr [...]

13 Follow the manufacturer's instructions for the installation procedures. Flow S witch Installation 1 . Mount the switc h upright, with a minimum of 5 pipe diameters of straight horizontal run on eac h side. Do not install close to elbows, orifices, or valves. Note: The arrow on the switc h must point in the direction of flow. 2. T o prevent [...]

14 Installation the values given by the pressure gauges, open one valve and close the other . Refr iger ant Saf ety V alv es Disc harge valves are an option for the R TUB. If installation requires this valve to be mounted, it is mandatory to install two safety valves: one between the compressor and the service valve and the other after the service [...]

15 Installation withstanding high temperatures without degradation.   C C A A U U T T I I O O N N A defect in fixing or insulating the condensation sensors may cause incorrect adjustment and/or damage to the compressor . If the sensor cannot be mounted in the place where the saturated gas enters the sub-cooler , it must be positioned on the s[...]

16 another manufacturer's condenser in used, operation and performance may be degraded. Depending on the fan settings, malfunctioning may damage the R TUB due to instability of the high pressure. Sound and vibration at tenuating device installation on the disc harge lines is strongly recommended in order to avoid an y acoustical annoyance and [...]

17 Installation 1 2 Figure 1 1: Units on the same level Limitations: The distance between the two units must not exceed 60 m in reality or the equi valent of 90 m taking into account pressure drops. The height of the liquid line in relation to the unit base must be less than 5 m. It is recommended to place a trap on the disc harge line at the oil s[...]

18 Installation 3 Figure 13: RTCA (or other manuf actur er's condenser) below the RTUB Limitations: The distance between the two units must not exceed 60 m in reality or the equi valent of 90 m taking into account pressure drops. The height of the liquid line in relation to the condenser base must be less than 5 m. Legend f or Figures 1 1 -12-[...]

19 Equiv alent pressur e drops T o cor rectly determine the size of the liquid and disc harge lines for connection on site, it is first necessary to establish the equivalent pressure drops for eac h line, comprising the additional flow resistances, from bends, valves, etc. As a first approximation, we can estimate the equivalent pressure drops at 1[...]

20 V acuum pumping For this operation, use a vane pump making it possible to obtain a partial vacuum or 1 0 0 microns or less. When pumping out to create a vacuum, it is important to connect the pump to the high and low pressure sides of the system. Follow the pump manufacturer's recommendations. The pipes used to connect the pump to the syste[...]

21 Pr e-start chec k out Installation Checklist When installation is complete, but prior to putting the unit into service, the following pre-start procedures must be reviewed and verified: • Inspect all wiring connections to be sure they are clean and tight.   W W A A R R N N I I N N G G Disconnect all electric power , including remote disc[...]

22 Oper ation motor rotation requires confirmation of the electrical phase sequence of the power supply . The motor is internally connected for cloc kwise rotation with the incoming power supply phased A-B-C. When rotation is cloc kwise, the phase sequence is usually called "ABC;" when countercloc kwise, "CBA." This direction ma[...]

23 operating load. Overheating may vary slightly on the circuit if the system load is lower , when the slide valve is moving. Overheating must stabilize at approximately 4°C when the abo ve components have stabilized. Subcooling Normal subcooling for eac h circuit ranges from 8-1 0°C, depending on the units. If subcooling for either circuit does [...]

24 Oper ation System Flow R ates" and "W ater - System P ressure Drop." 7 . Adjust the flow switch on the evaporator piping for proper operation. 8. Stop the water pump. The unit is now ready for startup as described in "Startup P rocedures." RLC-SVX03A-E4[...]

25 P erform all maintenance procedures and inspections at the recommended intervals. This will prolong the life of the c hiller and minimize the possibility of costly failures. After the unit has been operating for approximately 30 minutes and the system has stabilized, c heck the operating conditions and complete the following procedures: W eekly [...]

26 For units without disc harge v alve option 1 . Shut of f the compressor and disconnect all electrical service to the compressor . 2. V acuum the refrigerant out of the circuit. 3. Remo ve the seven bolts on the oil filter cover . A pan may be necessary to catc h any oil that is released after the co ver is loosened. 4. Remo ve the cover and the [...]

27 Follow the steps listed below and refer to the notes listed in Figure 17 . 1 . T urn of f the unit. 2. Attac h the hoses and sight glass to the oil-separator Sc hrader valves, as shown in Figure 17 . Remove non-condensables. 3. After the unit has been of f for 1 0 minutes, move the sight glass up and down until the level can be seen. 4. After th[...]

28 Some symptoms of an oil under - char ged unit: • Compressor rattle or grinding sound • Lower -than-normal pressure drop through oil system • Seiz ed or W elded Compressors • Low oil-sump level af ter normal shutdown • Lower -than-normal oil concentrations in the evaporator R134a Field-Char ging Pr ocedur e Be certain that the electrica[...]

29 The evaporator is large enough to hold all the c harge, for any unit, below the centerline of the shell. Therefore, no special precautions are required to restart the unit af ter isolating the c harge in the evaporator . Filter Replacement Pr ocedur e A dirty filter is indicated by a temperature gradient across the filter , corresponding to a pr[...]

30 F actory (initial) Oil-Charging Procedur e The initial c harging procedure should be followed any time the unit is new or has had all of the oil removed. 1 . Add 0.95 liter (0.90 k g) of oil to the motor cavity or suction line prior to installing the compressor into the c hiller . 2. If the unit is not equipped with suction-line isolation valves[...]

31 and oil- line shutoff valve, without the need to pull a vacuum on this small volume. If the oil has been in an open container or is otherwise contaminated, then this small volume must be subject to vacuum as well. However , the filter cavity is full of oil. Therefore, be sure to use a flash tank in line with the vacuum pump to ensure that the oi[...]

T rane has a policy of continuous product and product data improvement and reserves the right to c hange design and specifications without notice. Only qualified technicians should perform the installation and servicing of equipment referred to in this publication. The T rane Compan y An American Standard Company www .trane.com For more information[...]