41
7. Hold garden sprayer nozzle close to finned areas and
apply cleane r with a vertical, up-and-down motion.
Avoid spraying in horizontal pattern to minimize po-
tential for fin damage.
8. Ensure cleaner thoroughly penetrates deep into finned
areas.
9. Interior and exterior finned areas must be thoroughly
cleaned.
10. Finned surfaces should remain wet with cleaning
solution for 10 minutes.
11. Ensure surfaces are not allowed to dry before rinsing.
Reapply cleaner as needed to ensure 10-minute satur-
ation is achieved.
12. Thoroughly rinse all surfaces with low velocity clean
water using downward rinsing motion of water spray
nozzle. Protect fins from damage from the spray
nozzle.
13. Replace top cover and rear corner posts.
FASTENER TORQUE VALUES
Table 15 – Torque Values
Compressor mounting bolts 734–847 N–cm
( 6 5 --- 7 5 i n – l b s )
Condenser fan motor mounting bolts 226 23 N–cm
(20 2in–lbs)
Condenser fan hub setscrew 949 136 N–cm
(84 2in–lbs)
High-flow service port 1085 23 N–cm
(96 10 in–lbs)
Schrader-type service check valve 23–34 N–cm
(2–3 in–lbs)
Compressor oil sightglass thread 23–34 N–cm
(330 31 in–lbs)
Compressor to Compressor rail torque 1356–1898 N–cm
(120–168 in–lbs)
Compressor rail to base pan torque 791 57 N–cm
(70 5in–lbs)
TROUBLESHOOTING
PROBLEM SOL UTION
COMPRESSOR DOES NOT R UN
Contactor Open
1. Power off. 1. Restore power.
2. Fuses blown in field power circuit. 2. After finding cause and correcting, replace with correct size fuse.
3. No control power. 3. Check cont rol trans fo rm er primary co nnec t io ns and circui t breaker.
4. Thermostat circuit open. 4. Check thermostat setting.
5. Safety device lockout circuit active. 5. Rese t lo ck out c ir cuit.
6. Low-pressure switch open. 6. Chec k for refrigera nt undercharge, obst ruc ti o n of indo or airflo w. Make
sure liquid line solenoid valve(s) is open.
7. High-pressure switch open. 7. Check for refrigerant overcharge, obstruction of outdoor airflow , air in system.
Be sure outdoor fans are operating correc tly.
8. Compressor overtemperature switch open. 8. Check for open condition. Allow for reset. Replace compressor if necessary.
9. Loose electrical connections. 9. Tight en all connec t io ns.
10. Compressorstuck. 10. Seecompressorserviceliterature.
Contactor Closed
1. Compressor leads loose. 1. Check connec ti o ns .
2. Motor windings open. 2. See compressor service literature.
3. Single phasing. 3. Check for blown fuse. Check for loose connection at compressor terminal.
COMPRESSOR STOPS ON HIGH-PRESSURE SWITCH
Outdoor Fan On
1. High-pressure switch faulty . 1. R eplace switc h .
2. Reversed fan rotation. 2 . Confir m rotatio n, correct if necess ary.
3. Airflow restricted. 3. R emove obst ructi on.
4. Air recirculating. 4. Clear airflow area.
5. Noncondensables in system. 5. Recover refrigerant and recharge as required.
6. Refrigerant overcharge. 6. Recover refrigerant as required.
7. Line voltage incorrect. 7. Consult power company.
8. Refrigerant system restrictions. 8. Check or replace filter drier, expansion valve, etc.
Outdoor Fan Off
1. Fanslipsonshaft. 1. Tightenfanhubsetscrews.
2. Motor not running. 2. Check power and capacitor.
3. Motor bearings stuck. 3. Rep lace be arin gs .
4. Motor overload open. 4. Check overload rating. Check for fan blade obstruction.
5. Motor burned out. 5. Replace motor.
38AU
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