Carrier 19XR - Rig Machine Components

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RIG MACHINE COMPONENTS — Refer to instructions
below, Fig. 7-9, and Carrier Certified Prints for machine com-
ponent disassembly.
.
NOTE: If the cooler, economizer, and condenser vessels must
be separated, the heat exchangers should be kept level by plac-
ing a support plate under the tube sheets. The support plate will
also help to keep the vessels level and aligned when the vessels
are bolted back together.
NOTE: The compressor oil is hygroscopic and absorbs mois-
ture from the atmosphere. Remove the oil charge from the
compressor. Store the oil in a clean dry container designed for
the purpose of storing oil; keep the container sealed until it is
time for reinstallation of the oil. Or, dispose of the compressor
oil and reinstall a new oil charge after dehydration.
NOTE: Wiring must also be disconnected. Label each wire
before removal (see Carrier Certified Prints). In order to dis-
connect the starter from the machine, remove wiring for the oil
pump, oil heater, control wiring at the power panel, and the
main motor leads at the starter lugs.
Remove all transducer and sensor wires at the sensor. Clip
all wire ties necessary to pull heat exchangers apart.
To Separate Cooler and Condenser:
1. Place a support plate under each tube sheet leg to keep
each vessel level (Item 3, Fig. 7).
2. Cut the refrigerant motor cooling line at the location
shown (Item 4, Fig. 7).
3. Disconnect the compressor discharge pipe at the com-
pressor (Item 14, Fig. 7).
4. Disconnect the coupling of the isolation valve near the
damper valve as shown in Fig. 7 (Item 12).
5. Unbolt the cooler liquid feed line at the location indicat-
ed for liquid line isolation valve. Refer to Fig. 3 and 7,
Item 8.
6. Cover all openings.
7. Disconnect all wires and cables that cross from the cooler
side of the machine to the condenser side, including:
a. temperature sensor cable at the waterbox (Fig. 9
and Fig. 10, Compressor Detail A).
b. motor power wires at the starter (Item 1, Fig. 7).
c. wires and cable housings at the control panel that
cross from the control panel to the cooler vessel.
(Fig. 8).
8. Disconnect the take-apart connectors on the tube sheets
(Fig. 9).
9. Rig the vessels apart.
To Separate the Compressor from the Cooler:
1. Unbolt the compressor suction elbow at the cooler flange
(Item 13, Fig. 7).
2. Cut the refrigerant motor cooling line at the location
shown (Item 4, Fig. 7).
3. Disconnect the motor refrigerant return line (Item 6,
Fig. 7).
4. Disconnect all wires going to the control panel.
5. Disconnect the following:
a. compressor oil sump temperature sensor cable
(Fig. 10, Compressor Detail B)
b. bearing temperature sensor cables (Fig. 10, Com-
pressor Detail B)
c. motor temperature sensor cable (Fig. 10, Compres-
sor Detail A)
d. wires and cable housings that cross from the power
panel to the starter and control panel (Fig. 8)
e. compressor discharge temperature sensor cable
(Fig. 10, Compressor Detail A)
f. compressor oil sump pressure cable (Fig. 10, Com-
pressor Detail B)
g. compressor oil supply pressure cable (Fig. 10,
Compressor Detail A)
h. bearing displacement switch (Fig. 10, Compressor
Detail D)
i. oil heater (Fig. 10, Compressor Detail B).
j. guide vane actuator cable (Fig. 10, Compressor
Detail D)
6. Disconnect the flared fitting for the oil reclaim line
(Item 11, Fig. 7).
7. Unbolt the compressor discharge coupling (Item 14,
Fig. 7).
8. Cover all openings.
9. Disconnect motor power cables at the starter lugs (Item 1,
Fig. 7).
10. Unbolt the compressor mounting from the cooler (Item 7,
Fig. 7).
To Rig Compressor:
NOTE: The motor end of the 19XR compressor is heavy and
will tip backwards unless these directions are followed:
1. Cut two 6 in. x 8 in. wooden beams to the same length as
the compressor.
2. Drill holes into the beams and bolt them to the base of the
compressor.
Additional Notes
1. Use silicone grease on new O-rings when refitting.
2. Use gasket sealant on new gaskets when refitting.
3. Cooler and condenser vessels may be rigged vertically.
Rigging should be fixed to all 4 corners of the tube sheet.
IMPORTANT: Only a qualified service technician should
perform this operation.
WARNING
Do not attempt to disconnect flanges while the machine is
under pressure. Failure to relieve pressure can result in per-
sonal injury or damage to the unit.
CAUTION
Before rigging the compressor, disconnect all wires con-
nected to the control panel to avoid damage to electrical
components.