Pre-Start-Up; Start-Up; Locate And Repair Refrigerant; Charge The Unit As Follows - Carrier 50ZP036 Installation, Start-Up And Service Instructions Manual

PRE-START-UP
Failure to observe the lollowing warnings could result in
serious inju U or death:
1. Follow recognized sali:ty practices and wear protective
goggles when checking or servicing reb'igerant system.
2. Do not operate compressor or provide any electric power to
unit unless compressor terndnal cover is in place and
secured.
3. Do not remove compressor terminal cover until all electri-
cal sources are disconnected.
4. Relieve all pressure li"om both high- and low-pressure sides
of the system beli)re touching or disturbing anything inside
temfiual box if refrigerant leak is suspected around con>
pressor terminals. Use accepted methods to recover refrig-
erant.
5. Never attempt to repair soldered connection while refrig-
erant system is under pressure.
6. Do not use torch to remove any component. System
contains oil and reli"igerant under pressure. To remove a
component, wear protective goggles and proceed as lol-
lows:
a. Shut o1"1 electrical power to unit.
b. Relieve all reli"igerant from system using both high- and
low-pressure ports. Use accepted methods to recover
refrigerant.
c. Cut component connecting tubing with tubing cutter and
remove component li"om unit.
d. Carefully unsweat remaining tubing stubs when neces-
sary. Oil can ignite when exposed to torch flame.
Use the Start-Up Checklist supplied at the end of this book and
proceed as lkHlows to inspect and prepare the unit lk)r initial
start-up:
1. Remove all access panels.
HIGH-VOLTAGE LOW-VOLTAGE
POWERWIRING WIRING ENTRY
ENTRY HOLE HOLE
Fig. 11--Unit Electrical Connection
C00010
2. Read and lollow instructions on all DANGER, WARNING,
CAUTION, and INFORMATION labels attached to, or
shipped with, unit.
Make the li)llowing inspections:
a. Inspect liar shipping and handling damages such as broken
lines, loose parts, disconnected wires, etc.
COMPRESSOR TRANSFORMER
CONTACTOR
\
O O
O
o
© O
ELECTRIC GROUND INDOOR OUTDOOR FAN MOTOR HIGH
HEATER LUG FAN AND COMPRESSOR VOLTAGE
FUSES RELAY START CAPACITOR LEADS
C00011
Fig. 12--Control Box Wiring
b. Inspect R)r oil at all refrigerant tubing connections and on
unit base. Detecting oil generally indicates a reli"igeraut
leak. Leak-test all reli"igeraut tubing connections using
electronic leak detector, or liquid-soap solution. If a reli"ig-
eraut leak is detected, see l'ollowiug Check for Refrigenmt
Leaks section.
c. Inspect all field- and factory-wiring connections. Be sure
that connections are completed and tight.
d. Inspect coil fins. If damaged during shipping and handling,
carefully straighten fins with a l]u comb.
3. Verify the liHlowing conditions:
a. Make sure that outdoor-fan blade is correctly positioned in
fan orifice. Top edge of blade should be 3.125 in. down
from condenser outlet grille. See Condenser Fan section.
(Reler to the Table of Contents lk)r page number.)
b. Make sure that air filter is in place.
c. Make sure that condensate drain pan and trap are filled with
water to ensure proper drainage.
d. Make sure that all tools and miscellaneous loose parts have
been removed.
START-UP
Use the Start-Up Checklist supplied at the end of this book and
proceed as lollows:
Step 1--Check for Refrigerant Leaks
LOCATE AND REPAIR REFRIGERANT LEAKS AND
CHARGE THE UNIT AS FOLLOWS:
1. Using both high- and low-pressure ports, locate leaks and
reclaim remaiuing refrigerant to relieve system pressure.
2. Repair leak lidlowiug accepted practices.
NOTF: Install a filter drier whenever the systen_ has been opened
liar repair.
3. Check system liar leaks using an approved method.