Carrier 50DF034 User Manual download pdf (Page 16)

Outdoor (Condenser) Air Fan Adjustment

(Fig. 21) — Shut off unit power supply Remove fan

guard and loosen fan hub setscrews Adjust fan height

using a straight edge laid across venturi. Tighten set

screws and replace rubber hubcap to prevent hub from

rusting to motor shaft. Fill hub recess with Permagum

if hub has no rubber hubcap.

Fig. 21 — Outdoor Air Fan Adjustment

Damper Vent Position Setting

1. On constant volume units, adjust thermostat or trans

mitter so there is no call for cooling. On variable

volume units, adjust set point knob on microprocessor

so there is no call for cooling. The economizer

dampers go to minimum position

2 Remove cap from vent adjustment screw on top of

damper motor terminal box cover

3. Turn adjustment screw slowly until dampers assume

desired vent position. Do not manually operate

clamper motor. Damage to motor will result.

POWER FAILURE — Dampers have a spring return.

In the event of a loss of power, dampers close until power

is restored Do not manually operate damper motor.

Damage to motor will result.

Refrigerant Charge — Amount of refrigerant charge

is shown on unit nameplate and in Table 1. When charg

ing refrigerant system, refer to Carrier Standard Service

Techniques Manual, Chapter 1, Refrigerants. When

adding a complete charge, evacuate the system using

standard evacuating procedures and weigh in specified

amount of refrigerant. A charging chart (Fig. 22) is pro

vided on unit control box door above compressor and

may be used (use of sight glass not required).

When using refrigerant liquid line sight glass to charge

system:

1. Install a jumper on the low-pressure switch if required.

2. Operate unit with restricted condenser airflow to

achieve an operating discharge pressure of about

375 psig.

3. Slowly add refrigerant until sight glass clears.

4. Remove jumper from low-pressure switch and remove

condenser air restriction.

Fig. 22 — Charging Chart; 50DF034, System 1 and System 2

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

Book|l PC111 Catalog No 565-032 PrintedinUSA Form50DF-9SI Pg 16 790 4-86 Replaces: 50DF-7SI

For replacement items use Carrier Specified Parts

Tab 1b

1 2 ... 11 12 13 14 15 16

Comments to this Manuals

No comments

Carrier 50DF034 User Manual Page 16

Comments to this Manuals

Related products and manuals for Conditioners Carrier 50DF034