Quantech QTC3040T User Manual

Quantech
126
Form QTC3-NM1
Issue date: 12/19/2023
Section 6: Commissioning
Quantech
2
Form QTC3-CL1 (1123)
Issue date: 11/10/2023
Table 1: Setpoints entry list
Unit options
Display language
System 1 switch
System 2 switch
Chilled liquid
Ambient control*
Local/remote mode
Control mode
Display units
Lead/lag control*
Fan control*
Manual override
Power fail restart
Soft start**
Unit type**
Refrigerant type**
Flash card update
Remote temperature reset
External evaporator pump
Quantech hydro kit pump
Pump selection
Data log to ashcard enabled
Expansion valve type**
Cooling setpoints
Cooling setpoint
Range
EMS-PWM maximum setpoint
Program setpoints
Discharge pressure cutout
Suction pressure cutout
Low ambient tempertaure
cutout
Leaving liquid tempertaure
cutout
Anti-recycle time
Fan control ON pressure
Fan di󰀨erential OFF pressure
Total number of compressors
Number of fans/system*
Unit/system voltage*
Remote unit ID
* Not on all models, **Viewable only
Startup
Panel checks: power on, both unit switches o󰀨
1. Apply three-phase power and verify the value. En-
sure voltage imbalance is no more than 2% of the
average voltage .......................................................
2. Apply 120 VAC, 110 VAC for 50 Hz units, and verify
the value on the terminal block in the power panel.
Make the measurement between Terminals 5 and 2
of XTBC2. Ensure the voltage is 120 VAC ± 10% ....
3. Program and verify the cooling setpoints, program
setpoints, and unit options. Record the values in
Table 1 .........................................................................
4. Place the unit into service mode and cycle each con-
denser fan to ensure correct rotation ........................
If the chiller is equipped with VSD fans,
the cycling condenser fan can not be used
to conrm phase sequence. Use a phase
checker or temporarily bypass the VSD
before starting a compressor.
5. Turn system 2 OFF and leave system 1 running.
Refer to QTC3-ICOM6, Section 6: Operations, Unit
Keys for more information on system switches.........
6. Connect a manifold gauge to system 1 suction and
discharge service valves ............................................
7. Turn the unit switch in the control panel ON .............
Note: The chilled liquid setpoint may need to be
temporarily lowered to ensure all compressors
cycle on.
As each compressor cycles on, ensure that the dis-
charge pressure rises and the suction pressure decreas-
es. If this does not occur, the compressor being tested is
operating in the reverse direction and must be corrected.
8. Verify that compressor rotation is correct and then
turn the unit switch OFF ..........................................
Note: This unit uses scroll compressors, which
can only operate in one direction. Failure to ob-
serve this leads to compressor failure.
9. Turn system 1 OFF and system 2 ON (two system
units only). Refer to QTC3-ICOM6, Section 6: Op-
erations, Unit Keys for more information ...................
10. Turn the unit switch in the control panel ON ............
Note: The chilled liquid setpoint may need to be
temporarily lowered to ensure all compressors
cycle on.
As each compressor cycles on, ensure that the dis-
charge pressure rises and the suction pressure decreas-
es. If this does not occur, the compressor being tested is
operating in the reverse direction and must be corrected.
11. Ensure that you enable the data logging feature ......
12. Verify that compressor rotation is correct and then
turn the unit switch OFF .............................................

Quantech QTC3040T Specifications

General

Brand	Quantech
Model	QTC3040T
Category	Chiller
Language	English