PolyScience Refrigerated Recirculating Chillers User Manual

17
4.7 Setting Operational Parameters
The Chiller’s various operational parameters, such as temperature, flow rate, and pressure alarm
values, are all user-adjustable. They are accessed by pressing and holding the Units/Menu Button
until HL appears on the pressure/flow rate display. Pressing and releasing the Units/Menu Button
once HL appears allows you to scroll through the various parameters; rotating the Select/Set Knob
allows you to change the displayed setting. You can accept the displayed value by either pressing
the Select/Set Knob or allowing the display to timeout.
Menu Item Description Choices / Ranges / Comments
Default
Setting
HL
High Temperature Limit
Alarm Set Point
+20° to 42°C / 68° to 108°F
(Refrigerating Chillers)
+20° to 72°C / 68° to 162°F
(Refrigerating / Heating Chillers)
35ºC
50ºC
LL
Low Temperature Limit
Alarm Set Point
-14°C to +15°C / 7° to 59°F (all units) 0.0ºC
HA
Front Panel High
Ambient Temperature
Alarm Set Point
+30° to 45°C.
Always displayed and set in °C.
40ºC
FP w/psi LED lit
Maximum Fluid
Pressure Alarm Set
Point
40 to 100 PSI 80 PSI
FP w/kPa LED
lit
Maximum Fluid
Pressure Alarm Set
Point
270 to 680 kPa 550 kPa
FL w/gpm LED
lit
Minimum Flow Rate
Alarm Set Point
0 or 0.8 to 2.0 GPM 0.0 GPM
FL w/lpm LED
lit
Minimum Flow Rate
Alarm Set Point
0 or 3 to 7 LPM 0.0 LPM
Sd
Establishes the cooling
and heating rate by
setting a desired
differential between the
measured internal and
external temperature.
4°C to 20°C
Always displayed and set in °C
NOTE: Sd is displayed only if the optional
remote temperature control probe is installed.
5°C
AF
Auto-Refrigeration
Temperature Set Point
+20° to 40°C (Refrigerating Chillers)
+20° to 50°C (Refrigerating / Heating Chillers)
Always displayed/set in °C.
40ºC
50ºC
AtC (ambient temperature control probe
enabled)
rPC (remote temperature control probe
enabled)
NO (external temperature control probe
disabled)
NO
(optional)
rP
External temperature
probe status
NAP (external temperature control probe not
installed)
NAP
c
1
Internal Probe
Calibration Offset
±2.9°C.
Always displayed/set in °C.
Special access procedure required.
See Section 4.7.9.
0.0ºC
c
2
External Probe
Calibration Offset
±2.9°C.
Always displayed/set in °C.
Special access procedure required.
See Section 4.7.10.
0.0ºC
F
c
Fluid Flow Rate
Calibration Gain
Coefficient
0.2 to 50.0
See Section 4.7.11.
1.0
PC
Communications Baud
Rate
0, 2400, 4800, 9600, 19200.
Zero should be entered if RS232 is not being
used.
9600

PolyScience Refrigerated Recirculating Chillers Specifications

General

Brand	PolyScience
Model	Refrigerated Recirculating Chillers
Category	Chiller
Language	English