CG-SVX039C-GB
71
WARNING! It is imperative that L1, L2, and L3 in the
starter be connected in the A-BC phase sequence to
prevent equipment damage due to reverse rotation.
WARNING! To prevent injury or death due to
electrocution, take extreme care when performing
service procedures with electrical power energized.
CAUTION! Do not interchange any load leads that are
from the unit contactors or the motor terminals. Doing
so may damage the equipment.
Water System Flow Rates
Establish a balanced chilled water flow through the
evaporator. The flow rates should be between the
minimum and maximum values given on the pressure
drop curves.
Water System Pressure Drop
Measure the water-pressure drop through the evaporator
on the field installed pressure taps on the system water
piping. Use the same gauge for each measurement. Do
not include valves, strainers, or fittings in the pressure
drop readings.
Integrated Pump Package (Optional)
Before starting up the pump, the pipe system must be
thoroughly cleaned, flushed and filled with clean water.
Do not start the pump until it has been vented. To ensure
correct venting, open the vent screw located on the
pump housing on the suction side (see next figure).
Figure 27 – Pump Package
CAUTION! When using freeze inhibitor, never fill the
system with pure glycol; this will damage the shaft seal.
Always fill the system with diluted solution. Maximum
concentration of glycol is 40% for unit with pump
package.
CAUTION! Failure to operate pump w/o water or insert
high glycol concentration will lead to premature seal
damage and void the warranty.
If the chiller is installed in a humid environment or a
location with high air humidity, the bottom drain hole
on the pump motor should be opened. The enclosure
class of the motor is then changed from IP55 to IP44. The
function of the drain holes is to drain off water which has
entered the stator housing with air humidity.
Tracer UC800 Set-Up
Using Tracer TU service tool, adjust the settings. Refer to
Tracer TU manual and UC800 user guide for instruction
on settings.
CAUTION! To prevent compressor damage, do not
operate the unit until all refrigerant valves and oil-line
service valves are opened.
IMPORTANT! A clear sight glass alone does not mean
that the system is properly charged. Also check system
discharge superheat, approach temperature and unit
operating pressures.
Pre-Start Checkout
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