Service; Warning; Electrical Shock Hazard; Failure To Follow This Warning Could Cause Personal - Carrier 50PG08 Installation Instructions Manual

UNIT
DRIVE
50PG 0
Low 771
08
High 1015
Low 771
09
High 1015
Low 893
12
High 1055
Low 893
14
High 1055
Low 879
16 Mid-Low 1066
High 1260
*Approximate fan rpm shown, based on 1725 rpm motor.
NOTE: Factory pulley speed setting is at 5 turns open for sizes 08-14 and 2 turns open for size 16.

SERVICE

WARNING

!

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal

injury or death.

Before performing service or maintenance operations

on unit, turn off main power switch to unit.
CAUTION
!

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this caution may result in personal injury
or equipment damage.
Puron® (R- -410A) refrigerant systems operate at higher
pressures than standard R- -22 systems. Do not use R- -22

service equipment or components on Puron refrigerant

equipment. If service equipment is not rated for Puron
refrigerant, equipment damage or personal injury may
result.
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.
Coil Maintenance and Cleaning Recommendation
Routine cleaning of coil surfaces is essential to maintain proper
operation of the unit. Elimination of contamination and removal
of harmful residues will greatly increase the life of the coil and
extend the life of the unit. The following maintenance and
cleaning procedures are recommended as part of the routine
maintenance activities to extend the life of the coil.
Table 19—Fan Rpm at Motor Pulley Settings*
1 1
/ 1 1 /
2 2
751 731 710
994 974 954
751 731 710
994 974 954
873 852 832
1035 1015 994
873 852 832
1035 1015 994
863 846 829
1047 1027 1008
1240 1221 1202
Table 20—Accessory/FIOP Electric Heat Static Pressure (in. wg)
50PG08-14
PRESSURE
AIRFLOW
DROP (in.
(Cfm)
wg)
2250
0.03
2650
0.05
3050
0.06
3450
0.08
3850
0.10
4250
0.12
4650
0.14
5050
0.17
5450
0.20
5850
0.23
6250
0.26
MOTOR PULLEY TURNS OPEN
1
2 2 / 3
2
690 670 649
934 913 893
690 670 649
934 913 893
812 791 771
974 954 934
812 791 771
974 954 934
812 795 778
988 969 950
1182 1163 1144
50PG16
PRESSURE
AIRFLOW
DROP (in.
(Cfm)
wg)
4500
0.02
4800
0.02
5100
0.03
5400
0.03
5700
0.04
6000
0.04
6300
0.05
6600
0.06
6900
0.07
7200
0.07
7500
0.08
Remove Surface Loaded Fibers
Surface loaded fibers or dirt should be removed with a vacuum
cleaner. If a vacuum cleaner is not available, a soft non-metallic
bristle brush may be used. In either case, the tool should be
applied in the direction of the fins. Coil surfaces can be easily
damaged (fin edges can be easily bent over and damage to the
coating of a protected coil) if the tool is applied across the fins.
NOTE: Use of a water stream, such as a garden hose, against a
surface loaded coil will drive the fibers and dirt into the coil. This
will make cleaning efforts more difficult. Surface loaded fibers
must be completely removed prior to using low velocity clean
water rinse.
Periodic Clean Water Rinse
A periodic clean water rinse is very beneficial for coils that are
applied in coastal or industrial environments. However, it is very
important that the water rinse is made with very low velocity
water stream to avoid damaging the fin edges. Monthly cleaning
as described below is recommended.
Routine Cleaning of Coil Surfaces
Monthly cleaning with Totaline® environmentally sound coil
cleaner is essential to extend the life of coils. This cleaner is
available from Carrier Replacement parts division as part number
P902-0301 for a one gallon container, and part number
P902-0305 for a 5 gallon container. It is recommended that all
coils, including standard aluminum, pre-coated, copper/copper or
E-coated coils be cleaned with the Totaline environmentally
sound coil cleaner as described below. Coil cleaning should be
part of the unit's regularly scheduled maintenance procedures to
ensure long life of the coil. Failure to clean the coils may result in
reduced durability in the environment.
47
1 1
3 / 4 4 /
2 2
629 609 589
873 852 832
629 609 589
873 852 832
751 731 710
913 893 873
751 731 710
913 893 873
761 744 727
930 911 892
1124 1105 1085
5
568
812
568
812
690
852
690
852
710
872
1066