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INITIAL START-UP
In order for the Reliance VFD to be eligible for the full
warranty period, the following conditions must be met:
1. The chiller must be started by a technician that has com-
pleted Reliance LiquiFlo2 training.
2. The start-up technician must be registered with Reliance.
3. The start-up technician must register the chiller start-up
on the Reliance web site.
Preparation — Before starting the chiller, verify:
1. Power is on to the CB2 control power circuit breaker, oil
pump relay, tower fan starter, oil heater relay, and the
chiller control center.
2. The CB1 main control center circuit breaker is in the On
position.
3. Cooling tower liquid is at proper level and at-or-below
design entering temperature. Check cooling tower bypass
valve.
4. Chiller is charged with refrigerant and all refrigerant and
oil valves are in their proper operating positions.
5. Oil is at the proper level in the oil sump sight glass.
6. The Oil Sump Temperature must be above 140 F (60 C)
or CALC EVAP SAT TEMP plus 15º F (8.3º C) before the
controls will allow the chiller to start to ensure that a suf-
ficient amount of refrigerant has been driven out of the
oil.
7. All valves listed on page CL-3 of the Initial Start-Up
Checklist are fully open.
8. The VFD cold plate refrigerant isolation valves are open.
9. Remove the control center shipping bracket (see Fig. 50).
NOTE: For seismic units, do not remove the shipping
bracket.
10. Access the CONTROL TEST screen. Scroll down on the
TERMINATE LOCKOUT option. Press the SELECT (to
enable the chiller to start) and answer YES to restore unit
to operating mode. The chiller is locked out at the factory
in order to prevent accidental start-up.
Check Oil Pressure and Compressor Stop —
Start the chiller and allow it to automatically ramp load.
1. Two minutes after start-up, note the OIL PRESSURE
DELTA P reading on the ICVC default screen. The OIL
PRESSURE DELTA P is the difference between the oil
pressure leaving the oil filter and the oil sump pressure.
The minimum OIL PRESSURE DELTA P is 18 psid
(124 kPad) after OIL PRESSURE VERIFY TIME is ex-
ceeded. The OIL PRESSURE DELTA P is displayed on
the COMPRESS, STARTUP, PRESSURE TRANSDUC-
ERS, PUMPS, and DEFAULT screens. A normal full load
reading is approximately 20 to 28 psid (138 to 193 kPad).
2. Press the STOP softkey and listen for any unusual sounds
from the compressor as it coasts to a stop.
To Prevent Accidental Start-Up — The chiller is
shipped with the CHILLER START/STOP parameter in the
MAINSTAT screen set to STOP. Once installed, a chiller STOP
override setting may be entered to prevent accidental start-up
during service or whenever necessary. Access the MAINSTAT
screen and using the or softkeys, high-
light the CHILLER START/STOP parameter. Override the cur-
rent START value by pressing the softkey. Press the
softkey followed by the softkey. The word
SUPVSR! displays on the ICVC indicating the STOP override
is in place.
To start the chiller the STOP override setting must first be
removed. Access the MAINSTAT screen and using
or softkeys highlight CHILLER START/STOP.
The 3 softkeys that appear represent 3 choices:
• — forces the chiller ON
• — forces the chiller OFF
• — puts the chiller under remote or schedule
control.
To return the chiller to normal control, press the
softkey followed by the softkey. For
more information, see Local Start-Up, page 60.
The default ICVC screen message line indicates which
command is in effect.
Check Chiller Operating Condition — Check to
be sure that chiller temperatures, pressures, liquid flows, and
oil and refrigerant levels indicate the system is functioning
properly.
Instruct the Customer Operator — Ensure the op-
erator(s) understands all operating and maintenance
procedures. Point out the various chiller parts and explain their
function as part of the complete system.
CAUTION
Operating the chiller with the shipping bracket attached
may result in excessive vibration and noise. The shipping
brace should be removed to avoid possible equipment
damage (except for seismic units).
SHIPPING BRACKET
(FOR SEISMIC UNITS,
DO NOT REMOVE)
Fig. 50 — Control Center Shipping Bracket
(Unit with R Compressor Shown)
a23-1664
WARNING
Do not permit liquid or brine that is warmer than 110 F
(43 C) to flow through the cooler or condenser. Refrigerant
overpressure may discharge through the relief valves and
result in the loss of refrigerant charge and possible personal
injury.
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