Carrier 09DK Series, Installation, Start-Up And Service Instructions Manual

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Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 530-917 Printed in U.S.A. Form 09DK-13SI Pg 1 612 11-99 Replaces: 09DK-11SI
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . . . 1
INTRODUCTION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-18
Step 1 — Complete Pre-Installation Checks
. . . . . . 2
Step 2 — Locate and Rig Unit, Remove
Shipping Skid
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
• LOCATION
• RIGGING
• PLACING UNIT
• MOUNTING UNIT
Step 3 — Complete Refrigerant Piping
. . . . . . . . . . . 6
• GENERAL
• COIL CIRCUITING CONVERSION
INSTRUCTIONS
• REFRIGERANT LINE SIZING
• LIQUID SHUTOFF VALVE AND
SIGHT GLASS
• PRESSURE RELIEF
• REFRIGERANT RECEIVER
• COIL CONNECTIONS
Step 4 — Complete Electric Connections
. . . . . . . . 18
• GENERAL
• CONNECTIONS
• POWER WIRING
• GENERAL WIRING NOTES
Step 5 — Add Accessories as Needed
. . . . . . . . . . . 18
START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18-20
System Evacuation and Dehydration
. . . . . . . . . . . . 18
Charging Procedure
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Check Operation of Condenser Fan Motor
Controls and Rotation of Fans
. . . . . . . . . . . . . . . . 18
SERVICE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21,22
Fan Guard Removal
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Fan Adjustment
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Lubrication
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Cleaning Standard Coils
. . . . . . . . . . . . . . . . . . . . . . . . . 21
Cleaning and Maintaining E-Coated Coils
. . . . . . . 21
Fan Motor Removal
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Head Pressure Control
. . . . . . . . . . . . . . . . . . . . . . . . . . 22
• FAN CYCLING
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning equip-
ment can be hazardous due to system pressures, electrical com-
ponents and equipment location (roofs, elevated structures,
etc.).
Only trained, qualified installers and service mechanics
should install, start up, and service this equipment (Fig. 1).
Untrained personnel can perform basic maintenance func-
tions such as cleaning coils. All other operations should be per-
formed by trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the
equipment.
Follow all safety codes. Wear safety glasses and work
gloves. Keep quenching cloth and fire extinguisher nearby
when brazing. Use care in handling, rigging, and setting bulky
equipment.
ELECTRIC SHOCK HAZARD
Open all remote disconnects before servicing
this equipment.
DO NOT USE TORCH to remove any component. System
contains oil and refrigerant under pressure.
To remove a component, wear protective gloves and gog-
gles and proceed as follows:
a. Shut off electrical power to unit.
b. Recover refrigerant to relieve all pressure from sys-
tem using both high-pressure and low pressure ports.
c. Traces of vapor should be displaced with nitrogen
and the work area should be well ventilated. Refrig-
erant in contact with an open flame produces toxic
gases.
d. Cut component connection tubing with tubing cutter
and remove component from unit. Use a pan to catch
any oil that may come out of the lines and as a gage
for how much oil to add to the system.
e. Carefully unsweat remaining tubing stubs when nec-
essary. Oil can ignite when exposed to torch flame.
Failure to follow these procedures may result in personal
injury or death.
DO NOT re-use compressor oil or any oil that has been
exposed to the atmosphere. Dispose of oil per local codes
and regulations. DO NOT leave refrigerant system open to
air any longer than the actual time required to service the
equipment. Seal circuits being serviced and charge with
dry nitrogen to prevent oil contamination when timely
repairs cannot be completed. Failure to follow these proce-
dures may result in damage to equipment.
09DK020-044
Air-Cooled Condenser Units
50/60 Hz
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