AAON CL-230 - Manual (Page 11)

11
STARTUP
Pre-Startup:
After the installation and immediately before the
startup of the condenser be sure that these items
have been checked.
1. Verify that electrical power is available to the
unit.
2. Verify that any remote stop/start device is
requesting the condenser to start.
While performing the Startup, use the
Condensing Startup Form at the back of this
booklet to record motor amps and any other
comments.
Startup:
• Use the General Check List at the top of the
Startup Form to make a last check that all the
components are in place and the power supply is
energized.
Note: Condensing fan operation should start
with the first compressor.
• Cycle through all the compressors to confirm
that all are operating within tolerance.
• When unit is running, observe the system for a
complete operation cycle to verify that all
systems are functioning properly.
• While performing the check, use the Condenser
Startup Form to record observations of amps and
refrigerant pressures.
• When all is running properly, place the
controller in the Run mode and observe the
system until it reaches a steady state of operation.
Axial Flow Fans:
Multi-Wing Z Series Aluminum Fan Blade
Pitch Angle Setting Instructions:
Before You Begin, to maintain balance of fan:
• Mark the hub castings across a joint, so the fan
hub can be reassembled in the same orientation.
• Mark the location of any balancing weight.
Balancing weight will be on the outer bolt circle,
in the form of washers, and/or longer bolts, or an
additional balancing nut.
• Number the blades and blade sockets, so that
they are replaced into their original position.
• If possible, note the location of the pitch setting
pin in the blade socket, and whether pin is
located in the Hub or Retainer half of the fan.
Step 1. Determine Boss Location Code: “A” or
“B” The boss is the center section of the hub
through which the fan is mounted to the shaft,
and typically contains either setscrews or a
center-tapered hole where the bushing inserts.
Select boss location A or B:
A is the boss on air inlet, including AS
configurations.
B is the boss on air discharge, including BS.
For flange mounted fans, use boss location A for
R rotation fans, and boss location B for L
rotation fans.