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RLC-SVX02G-E4
Unit Startup Procedures
Seasonal Unit Startup
Procedure
1. Close all valves and reinstall the
drain plugs in the evaporator.
2. Service the auxiliary equipment
according to the startup and
maintenance instructions
provided by the respective
equipment manufacturers.
3. Close the vents in the evaporator
chilled-water circuits.
4. Open all the valves in the
evaporator chilled-water circuits.
5. Open all refrigerant valves to
verify they are in the open
condition.
6. If the evaporator was previously
drained, vent and fill the
evaporator and chilled-water
circuit. When all air is removed
from the system (including each
pass), install the vent plugs in the
evaporator water boxes.
Ensure that the compressor and oil-
separator heaters have been
operating for a minimum of 24
hours before starting. Failure to do
so may result in equipment
damage.
7. Check the adjustment and
operation of each safety and
operating control.
8. Close all disconnect switches.
9. Refer to the sequence for daily
unit startup for the remainder of
the seasonal startup.
System Restart After
Extended Shutdown
Follow the procedures below to
restart the unit after extended
shutdown:
1. Verify that the liquid-line service
valves, oil line, compressor
discharge service valves, and
optional suction service valves
are open (backseated).
To prevent damage to the
compressor, ensure that all
refrigerant valves are open before
starting the unit.
2. Check the oil separator oil level
(see Maintenance Procedures
section).
3. Fill the evaporator water circuit.
Vent the system while it is being
filled. Open the vent on the top of
the evaporator while filling, and
close it when filling is completed.
Do not use untreated or improperly
treated water. Equipment damage
may occur.
4. Close the fused-disconnect
switches that provide power to
the chilled-water pump.
5. Start the evaporator water pump
and, while water is circulating,
inspect all piping for leakage.
Make any necessary repairs
before starting the unit.
6. While the water is circulating,
adjust the water flows and check
the water pressure drops through
the evaporator. Refer to “Water-
System Flow Rates” and “Water-
System Pressure Drop.”
7. Adjust the flow switch on the
evaporator piping for proper
operation.
8. Stop the water pump. The unit is
now ready for startup as
described in “Startup
Procedures.”
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