Carrier 50TCMD12 - Maintenance and Service Procedures; Cleaning, Lubrication, and Filters

Table – 3 Fan RPM at Motor Pulley Settings
Freq.
Unit
50TCM
Drive Package
MOTOR PULLEY TURNS OPEN - ENGLISH
0
1/3
1
1 1/3
2
2 1/3
3
3 1/3
4
4 1/3
5
50Hz
A07
Standard Static
1211 1176
1140
1104 1069 1033 998 962 926 891 855
Medium Static
1449 1362 1330 1298
1267
1235 1203 1172 1140 1108 1077
D08
Standard Static
808 784 760 736 713 689
665
641 618 594 570
Medium Static
932 875
855
835 814 794 774 753 733 713 692
D09
Standard Static
808 784 760 736 713 689
665
641 618 594 570
Medium Static
932 875
855
835 814 794 774 753 733 713 692
D12
Standard Static
808 784
760
736 713 689 665 641 618 594 570
Medium Static
1087 1021 998 974 950 926
903
879 855 831 808
D14
Standard Static
903
879 855 831
808
784 760 736 713 689 665
Medium Static
1056
998 980 962
944
926 908 891 873 855 837
Bold RPM is factory setting
4.0 – SERVICE
4.1 – Cleaning
Inspect unit interior at beginning of each heating and cooling season and as operating conditions require. Remove
unit top panel and/or side panels for access to unit interior.
EVAPORATOR COIL — Clean as required with a commercial coil cleaner.
CONDENSER COIL — Clean condenser coil annually and as required by location and outdoor-air conditions.
Inspect coil monthly and clean as required.
CONDENSATE DRAIN — Check and clean each year at start of cooling season.
FILTERS — Clean or replace at start of each heating and cooling season, or more often if operating conditions
require. Refer to Table 1 “Physical Data” type and size.
4.2 – Lubrication
Compressors are charged with the correct amount of oil at the factory.
Replacing Compressor - In the case of a motor burnout, the majority of contaminated will be removed with the
compressor. The rest of the oil is cleaned through the use of suction and liquid line filter driers. A 100% activated
alumna suction line filter drier is recommended but must be removed after 72 hours.
The compressor contains POE oil. POE oil has a high affinity for moisture. Do not remove the compressor’s tube
plugs until ready to insert the unit suction and discharge tube ends. The discharge connection plug should be
removed first before pulling the suction connection plug to allow the dry air pressure inside the compressor to
escape.
Note: This is only valid for the R410A systems.
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