Service, Service cleaning, Lubrication – Carrier 50EQ User Manual
Page 9
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Table 4 — Electrical Data, Units 50EQ034
UNIT MODEL
NOMINAL
VOLTS/PH/HZ
VOLTAGE
RANGE
COMPR
NO. 1, 2
OUTDOOR
FAN
MOTOR
INDOOR
FAN
MOTOR
EXHAUST
FAN
MOTOR
HEATERS
POWER SUPPLY
»
Circuit
No. 1
Circuit
No. 2
Min
Max
RLA
LRA
Qty
FLA
Hp
FLA
Hp
FLA
FLA
MCA
MOCP
MCA
MOCP
10
30 8
—
—
—
230
250
—
—
10
30 8
3
9 6
—
230
250
—
—
15
41 4
—
—
—
230
250
—
—
10
30 8
—
—
199-229
230
250
255-310
300-350
10
30 8
—
—
—
230
250
—
—
10
30 8
—
—
318-376
230
250
420-475
450-500
50EQ034500
208-230/3/60
187
254
71 2
240
3
7 6
15
10
41 4
30 8
3
3
9 6
9 6
199-229
230
230
250
250
255-310
300-350
10
30.8
3
9.6
—
230
250
—
—
10
30 8
3
9 6
318-376
230
250
420-475
450-500
15
41 4
—
—
119-229
230
250
255-310
300-350
15
41 4
—
—
—
230
250
—
—
15
41 4
—
—
318-376
230
250
420-475
450-500
15
41 4
3
9 6
199-229
230
250
255-310
300-350
15
41 4
3
9 6
—
230
250
—
—
15
41.4
3
9.6
318-376
230
250
420-475
450-500
10
14
___
___
___
100
110
—
___
10
14
3
4.8
—
100
110
—
—
15
20
—
—
—
100
110
—
—
10
14
—
—
115.1
100
110
150
150
10
14
—
—
—
100
110
—
—
10
14
—
—
184
100
110
230
250
15
20
3
48
—
115
125
—
—
50EQ034600
460/3/60
414
528
32
120
3
3 3
10
10
14
14
3
3
4 8
48
115 1
100
100
110
110
150
150
10
14
3
48
184
100
110
230
250
15
20
—
—
115 1
100
110
150
150
15
20
—
—
—
100
110
—
—
15
20
—
—
184
100
110
230
250
15
20
3
48
115 1
115
125
150
150
15
20
3
48
—
115
125
—
—
15
20
3
4 8
184
115
125
230
250
*Fuse only
Compr —
FLA
—
Hp
Kw
—
LRA —
Compressor
MCA
Full Load Amps
MOCP
Nominal Horsepower
Kilowatts
RLA
Locked Rotor Amps
— Minimum Circuit Amps
— Maximum Overcurrent
Protection
— Rated Load Amps
NOTES: (Tables 2
1
2
3
3, and 4)
All outdoor fan motors are single-phase motors
All heaters are 3-phase assemblies
Main power supply (circuit no 1) on all units is suitable for
copper or aluminum or wire
Electric heat power supply (circuit no 2) on 240 amp, 230 v,
114 amp, 460 v units is suitable for copper wire only
SERVICE
Cleaning
— Inspect unit interior at the beginning of
each heating and cooling season and during each
season as operating conditions require. Remove unit
side panels as required to expose unit interior.
INDOOR COILS — Clean with a stiff brush,
vacuum cleaner or compressed air.
OUTDOOR COIL — Clean with a stiff brush or
vacuum cleaner. When cleaning with compressed air
or low-pressure water or steam, guard against
damaging compressor wiring and nearby controls.
Condenser fan motors are drip-proof but not
waterproof.
CONDENSER SECTION DRAINS — Check that
these drains are clean and drain freely.
CONDENSATE DRAIN — Check and clean
annually at start of cooling season. In winter, keep
drain and trap dry to protect against freeze-up.
RETURN AIR FILTERS — Clean or replace filters
at start of each heating and cooling season and once
during each season or as often as necessary during
each season depending on operating conditions.
Refer to Table 1 for type and size of filter used. Filter
access panels are shown in Fig. 3. Return air filter
tracks will accept 2 layers of one-in. thick filters if
2-in. filters are not available. Do not install bag fil
ters in standard filter tracks. Do not install standard
filters or 2-in. high-efficiency filters in bag filter
tracks.
OUTDOOR AIR INLET SCREENS — Clean
screens with steam or hot water and mild detergent.
Do not use throwaway-type filters in place of
screens. To remove screens, loosen fastening bracket
screws and slide out screens.
Lubrication
COMPRESSORS — Each compressor is charged
with correct amount of oil at the factory. Oil level
should be between bottom and mid level of sight
glass when compressor is warm. Refer to 06D Com
pressor Service Manual if additional information
regarding compressor lubrication system is required.
FAN SHAFT BEARINGS — Charge each grease
fitting with a suitable bearing grease at least once a
year. Do not overlubricate.
FAN MOTOR BEARINGS — No relubrication of
outdoor air fan motors or indoor air fan motors is
necessary for first 2 to 5 years of use depending on
operating conditions. Annually thereafter, open,
clean and repack each bearing with a suitable
bearing grease.