Carrier 19XRV - Check Motor Rotation

70
Table 14 — Refrigerant (HFC-134a) Charge
INITIAL START-UP
Preparation —
Before starting the chiller, verify:
1. Power is on to the VFD, oil pump relay, oil heater relay,
and the chiller control panel.
2. Cooling tower water is at proper level and at-or-below
design entering temperature.
3. Chiller is charged with refrigerant and all refrigerant and
oil valves are in their proper operating positions.
4. Oil is at the proper level in the reservoir sight glasses.
5. Oil reservoir temperature is above 140 F (60 C) or above
refrigerant temperature plus 50° F (28° C).
6. Valves in the evaporator and condenser water circuits are
open.
NOTE: If the pumps are not automatic, ensure water is
circulating properly.
7. Access the CONTROL TEST screen. Scroll down on the
TERMINATE LOCKOUT option. Press the SELECT (to
enable the chiller to start) and answer YES to reset unit to
operating mode. The chiller is locked out at the factory in
order to prevent accidental start-up.
Check Motor Rotation
1. Engage the control power circuit breaker (CB2) located
inside the left hand side of the VFD enclosure.
2. Finally close the main motor disconnect (CB1) on the
front of the VFD enclosure.
3. The VFD checks for proper phase rotation as soon as
power is applied to the VFD and the PIC III controls
power up. The controls do not permit a start if the phase
rotation is not correct.
4. An alarm message will appear on the ICVC if the phase
rotation is incorrect. If this occurs, reverse any 2 of the 3
incoming power leads to the VFD and reapply power.
The motor is now ready for a rotation check.
5. After the default screen status message states ‘Ready to
Start’ press the softkey. The PIC III control
performs start-up checks.
6. When the VFD is energized and the motor begins to turn,
check for clockwise motor rotation. See Fig. 37.
Check Oil Pressure and Compressor Stop
1. When the motor is at full speed, note the OIL PRES-
SURE reading on the ICVC default screen. Normal
19XRV oil pressure readings are between 18 and 30 psid
(124 to 207 kPad). The oil pressure should be between 18
and 40 psid (124 to 276 kPad) on Frame 3 compressors
equipped with rolling element bearings.
2. Press the Stop button and listen for any unusual sounds
from the compressor as it coasts to a stop.
To Prevent Accidental Start-Up — A chiller STOP
override setting may be entered to prevent accidental start-up
during service or whenever necessary. Access the MAINSTAT
screen and using the or softkeys,
highlight the CHILLER START/STOP parameter. Override the
current START value by pressing the softkey. Press
the softkey followed by the softkey. The
word SUPVSR! displays on the ICVC indicating the override
is in place.
To restart the chiller, the STOP override setting must be
removed. Access the MAINSTAT screen and using
or softkeys highlight CHILLER START/STOP.
The 3 softkeys that appear represent 3 choices:
• — forces the chiller ON
• — forces the chiller OFF
• — puts the chiller under remote or schedule
control
To return the chiller to normal control, press the
softkey followed by the softkey. For
more information, see Local Start-Up, page 53.
The default ICVC screen message line indicates which
command is in effect.
COOLER
CODE
REFRIGERANT
CHARGE
CONDENSER
CODE
REFRIGERANT
CHARGE
lb kg lb kg
20 345 156 20 225 102
21 385175 21 225 102
22 435 197 22 225 102
30 350 159 30 260 118
31 420 191 31 260 118
32 490 222 32 260 118
35 400 181 35 310 141
36 480218 36 310 141
37 550 249 37 310 141
40 560 254 40 280127
41 630 286 41 280127
42 690 313 42 280127
45 640 290 45 330 150
46 720 327 46 330 150
47 790 358 47 330 150
50 750 340 50 400 181
51 840 381 51 400 1
81
52 900 408 52 400 181
55 870 395 55 490 222
56 940 426 56 490 222
57 980445 57 490 222
60 940 426 60 420 190
61 980445 61 420 190
62 1020 463 62 420 190
65 1020 463 65 510 231
66 1060 481 66 510 231
67 1090 494 67 510 231
70 1220 553 70 780354
71 1340 608 71 780354
72 1440 653 72 780354
75 1365 619 75 925 420
76 1505 683 76 925 420
77 1625 737 77 925 420
80 1500 680 80 720 327
81 1620 735 81 720 327
82 1730 785 82 720 327
85 1690 767 85 860 390
86 1820 826 86 860 390
87 1940 880 87 860 390
IMPORTANT: The Reliance VFD warranty will be void if
the VFD is not started by a technician who has completed
Reliance LiquiFlo™ Tier 1 Training and whose name is
registered with Reliance.
Do not permit water or brine that is warmer than 110 F
(43 C) to flow through the cooler or condenser. Refrigerant
overpressure may discharge through the relief valves and
result in the loss of refrigerant charge, damaging the chiller.
Do not check motor rotation during coastdown. Rotation
may have reversed during equalization of vessel pressures.
LOCAL
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