Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.
Catalog No. 530-921
Printed in U.S.A.
Form 09AZ-1SI
Pg 1
612 2-01
Replaces: New
Installation, Start-Up and
Service Instructions
CONTENTS
Page
SAFETY CONSIDERATIONS
. . . . . . . . . . . . . . . . . . . . .1,2
GENERAL
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
INSTALLATION
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-12
Step 1 — Complete Pre-Installation Checks
. . . . . . 2
Step 2 — Rig and Place Unit
. . . . . . . . . . . . . . . . . . . . . 2
• LOCATION
• RIGGING
• PLACING THE UNIT
• MOUNTING UNIT
Step 3 — Complete Refrigerant Piping
. . . . . . . . . . . 2
• GENERAL
• COIL CIRCUITING
Step 4 — Complete Electrical Connections
. . . . . . . 9
• GENERAL
• CONNECTIONS
• MAIN POWER WIRING
• CONTROL CIRCUIT POWER WIRING
• GENERAL WIRING NOTES
09AZ Controls
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Operation Sequence
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
• VARIABLE SPEED FAN CONTROL
START-UP
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
System Evacuation and Dehydration
. . . . . . . . . . . . 13
Charging Procedure
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
SERVICE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Fan Guard Removal
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Condenser Fan Adjustment
. . . . . . . . . . . . . . . . . . . . . 13
Fan Motor Removal
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
MAINTENANCE
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cleaning
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cleaning Condenser Coil
. . . . . . . . . . . . . . . . . . . . . . . . 13
Lubrication
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TROUBLESHOOTING
. . . . . . . . . . . . . . . . . . . . . . . . . .13,14
START-UP CHECKLIST
. . . . . . . . . . . . . . . . . . CL-1, CL-2
SAFETY CONSIDERATIONS
Installing, starting up, and servicing air-conditioning equip-
ment can be hazardous due to system pressures, electrical
components, and equipment location. Only trained, qualified
installers and service mechanics should install, start-up, and
service the 09AZ equipment (Fig. 1).
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the equip-
ment. 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.
Separate power sources (main and control power circuits)
are used for these units. Be sure
both
main and control
power circuits are disconnected before servicing. Electrical
shock could cause personal injury.
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.
09AZ091-182
Remote Air-Cooled Condensers
90 to 200 Tons
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