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York YVWA
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FORM 201.30-CL2
ISSUE DATE: 9/30/2012
P.O. Box 1592, York, Pennsylvania USA 17405-1592 800-861-1001 Subject to change without notice. Printed in USA
Copyright © by Johnson Controls 2012 www.johnsoncontrols.com ALL RIGHTS RESERVED
Form 201.30-CL2 (912)
Issue Date: September 10, 2012
Supersedes: 201.30-CL2 (412)
6. Evaluate cooler and condenser water flow indica-
tion compared to design information found on the
sales order. If shell pressure drop is used, it should
be within +/- 15% of the rating information. ........
7. If the chilled water and condenser pump run
contacts on the chiller were overridden to check
flow, remove overrides. Pumps will get start
command when chiller initiates run. ...................
8. Press the SYSTEM SWITCHES key, and turn
on System 1 or 2 SWITCH. There may be a few
seconds delay before the compressor starts be-
cause of the anti-recycle timer. Be ready, when
each compressor starts, to switch the UNIT switch
to the OFF position immediately, if any unusual
noises or other adverse conditions develop. ......
9. When the compressor starts, press the relevant
System Pressures key to verify that oil differen-
tial pressure develops immediately. If oil pres-
sure does not develop, the automatic controls
will shut down the compressor. Under no cir-
cumstances should a restart attempt be made
on a compressor, which does not develop oil
pressure immediately. Switch the UNIT switch
to the OFF position. . ..........................................
10. As the chiller is started, verify the refrigerant lev-
el sensor tracks level from empty condenser to
fully flooded level sensor probe over the range
of less than 10% to almost 100%. ......................
11. Adjust condenser refrigerant liquid level setpoint
to a value that covers the subcooler top and pro-
vides proper evaporator performance with the
chiller running steady. ........................................
12. After the chiller is at full load at Design Leaving
Chilled Liquid Temperature, capture the operat-
ing data to print or save to text file. ....................

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