Carrier 38HD018 - MAINTENANCE PROCEDURES; Maintenance Safety Caution; Compressor Oil and Lubrication; Fan Motor Bearing Lubrication

MAINTENANCE
BLK DENOTES CLOSED CONTACTS
Fig. 9 — Time Guard II Sequence Chart
TIME GUARDH
—vio—
Tl T3 T2
1
YEL
COMPRESSOR
LOCKOUT
XD Cj> <D--blu-
<D d
Lbrn-
BLK-
BRN^r COMMON
TO THERMOSTAT
Fig. 10 — Wiring Diagram
See Fig. 10. Wire the device in series between the
compressor lockout (CLO) and the unit thermostat as
shown on unit wiring diagram.
A CAUTION
Before performing recommended maintenance, be
sure unit main power switch is turned off. Failure to
do so may result in electric shock or injury from
rotating fan blade.
Lubrication
COMPRESSOR contains factory oil charge. Replace oil
when lost. See Table 2 for oil recharge and refer to
Carrier Standard Service Techniques Manual, Chapter 1,
page 1-21, for oil recharging procedure. Use Carrier
PP33-1, Texaco WF-32 or Suniso 3GS oil.
FAN MOTOR BEARINGS — Oiling holes are provided
at each end of condenser fan motor. Remove fan motor
and lubricate motor with 32 drops (16 drops per hole) of
SAE-10 nondetergent oil at intervals described below:
a. Annually, when environment is very dirty, ambient
temperature is higher than 105 F and average unit
operating time exceeds 15 hours a day
b. Every 3 years when environment is reasonably clean,
ambient temperature is less than 105 F and unit
operating time averages 8 to 15 hours a day.
c. Every 5 years when environment is clean, ambient
temperature is less than 105 F and unit operating time
averages less than 8 hours a day.
Cleaning Coils — Coils should be washed out with
water, or blown out with compressed air. The blow-thru
design causes dirt and debris to build up on the inside of
the coils.
Remove the wire from terminal 2 on the compressor
lockout and connect the violet wire from T2 on the Time
Guard II device to terminal 2 on the compressor lockout.
Connect the wire removed from terminal 2 on the com¬
pressor lockout to yellow wire T1 on the Time Guard II
device. Connect black wire T3 on Time Guard II device
to common.
Compressor Lockout — Units with compressor
lockout protective device shut down on any safety trip.
Determine reason for safety trip. To restart, turn the
thermostat to OFF and then to COOL.
Clean coil annually or as required by location or
outdoor air conditions. Inspect coil monthly, and clean as
required. Fins are not continuous through coil sections.
Dirt and debris may pass through first section, become
trapped between the row of fins and restrict condenser
airflow. Use a flashlight to determine if dirt or debris has
collected between coil sections. Clean coil as follows:
1. Turn off unit power.
2. Using a water hose, or other suitable equipment, flush
coil from the outside to remove dirt Be sure to flush
all dirt and debris from drain holes in base of unit.
Fan motors are waterproof.
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