Charge Refrigerant into Ma chine
The 17/19EX machine may hav e the refrigerant alrea dy charged in the utility ve s s els . If
machine is not shipped fu lly charged, refriger an t is shipped separately t o conform with
transportation r egulations. The 17/19EX may b e ordered with a nitrogen hol ding charge of
15 psig (103 kPa). Evac uate the entire machine, and charge machine from refrigerant cylinders .
The full refrigerant cha rge on the 17/19EX will var y wit h machine components and design
conditions, indica te d on the job data specificat ions. An approximate c ha rge may be found in
17/19EX Physical Data section. The ful l machine charge is pri nted on the machine identification
label.
Always operate the conde nser and chilled water pum ps du ring charging operat io ns to
prevent freeze-up s. Use the C ontrols Test Te rminate Lockout to monitor condi tions and sta rt
the pumps.
If the machine ha s been shipped wi th a holding char ge, the refrige rant will be added through
CAUTION CAUTION
!
The transfer, addition , or removal of refrigerant in spri n g isolated machines may
place severe stress on external piping if springs have not been blocked in both
up and down directions.