Carrier XRV Specifications download pdf (Page 60)

Oil Charge — The oil charge for the 19XRV compressor

depends on the compressor Frame size:

• Frame 2 compressor — 8 gal (30 L)

• Frame 3 compressor — 8 gal (30 L)

• Frame 4 compressor — 10 gal (37.8 L)

• Frame 4 compressor with split ring diffuser option —

12 gal (45 L)

• Frame 5 compressor — 18 gal (67.8 L)

The chiller is shipped with oil in the compressor. When the

sump is full, the oil level should be no higher than the middle

of the upper sight glass, and minimum level is the bottom

of the lower sight glass (Fig. 2). If oil is added, it must meet

Carrier’s specification for centrifugal compressor use as

described in the Oil Specification section. Charge the oil

through the oil charging valve located near the bottom of the

transmission housing (Fig. 2). The oil must be pumped from

the oil container through the charging valve due to higher

refrigerant pressure. The pumping device must be able to lift

from 0 to 200 psig (0 to 1380 kPa) or above unit pressure. Oil

should only be charged or removed when the chiller is shut

down.

Tighten All Gasketed Joints and Guide Vane

Shaft Packing —

Gaskets and packing normally relax by

the time the chiller arrives at the jobsite. Tighten all gasketed

joints and the guide vane shaft packing to ensure a leak-tight

chiller. Gasketed joints (excluding O-rings) may include joints

at some or all of the following:

• Waterbox covers

• Compressor suction elbow flanges (at compressor and at the

cooler)

• Compressor discharge flange

• Compressor discharge line spacer (both sides) if no isolation

valve

• Cooler inlet line spacer (both sides) if no isolation valve

• Hot gas bypass valve (both sides of valve)

• Hot gas bypass flange at compressor

Refer to Table 10 for bolt torque requirements.

Check Chiller Tightness — Figure 29 outlines the

proper sequence and procedures for leak testing.

The 19XRV chillers are shipped with the refrigerant

contained in the condenser shell and the oil charge in the

compressor. The cooler is shipped with a 15 psig (103 kPa)

refrigerant charge. Units may be ordered with the refrigerant

shipped separately, along with a 15 psig (103 kPa) nitrogen-

holding charge in each vessel.

To determine if there are any leaks, the chiller should be

charged with refrigerant. Use an electronic leak detector to

check all flanges and solder joints after the chiller is pressur-

ized. If any leaks are detected, follow the leak test procedure.

Table 10 — Bolt Torque Requirements, Foot Pounds

Fig. 28 — Typical Wet-Bulb Type

Vacuum Indicator

a19-658

BOLT SIZE

(in.)

SAE 2, A307 GR A

HEX HEAD

NO MARKS

LOW CARBON STEEL

SAE 5, SA449

SOCKET HEAD OR HEX

WITH 3 RADIAL LINES

MEDIUM CARBON STEEL

SAE 8, SA354 GR BD

HEX HEAD

WITH 6 RADIAL LINES

MEDIUM CARBON STEEL

Minimum Maximum Minimum Maximum Minimum Maximum

46 69913

8 11 13 18 20 28

13 19 22 31 32 46

21 30 35 50 53 75

32 45 53 75 80115

46 65 75 110 115 165

65 95 105 150 160 225

105 150 175 250 260 370

140 200 265 380 415 590

1 210 300 410 580 625 893

330 475 545 7809851,410

460 660 770 1,100 1,3801,960

620 885 1,020 1,460 1,840 2,630

740 1060 1,220 1,750 2,200 3,150

1010 1450 1,670 2,390 3,020 4,310

1320 1890 2,180 3,110 3,930 5,610

1630 2340 2,930 4,190 5,2807,550

2 1900 2720 3,150 4,500 5,670 8,100

2180 3120 4,550 6,500 8,200 11,710

3070 4380 5,000 7,140 11,350 16,210

5120 7320 8,460 12,090 15,710 22,440

3 6620 9460 11,040 15,770 19,900 28,440

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 189 190

Comments to this Manuals

No comments

Carrier XRV Specifications Page 60

Comments to this Manuals

Related products and manuals for Unknown Carrier XRV