PolyScience DA500 User Manual

Menu Item Description Choices / Ranges Default Setting
Pd Password — For factory use only.
0 to 999 0
td HGB Valve Delay — For factory use only.
0 to 999 2
Fuse Bits — The current Fuse Bits (Fb) setting appears after the td setting and can be viewed, but not
changed. To change Fuse Bits (Fb) operational parameters, electrical power must be turned OFF and a
special key stroke combination entered. See Fuse Bits (Fb) for detailed instructions.
Input Logic State h00 h01 h02 h04 h05 h06
Closed OFF ON OFF ON
Remote
On / Off
dry contact
Open ON OFF
N/A
ON OFF
N/A
24 VDC OFF ON OFF ON
Remote
24 VDC
On / Off
0 VDC ON
N/A
OFF ON
N/A
OFF
Open OK OK OK Low Low Low
Fb
Water Level
Float Switch
Closed Low Low Low OK OK OK
You can adjust the following settings for your particular application or simply accept the default values.
High Temperature Limit (HL)
This menu item serves two functions. First, it establishes the maximum allowable set point temperature and thus
helps prevent an operator from inadvertently selecting a temperature set point above a pre-established value.
Secondly, it serves as a high temperature alarm, automatically activating both audio and visual alarm indicators
if the measured fluid temperature reaches the HL setting. This also causes the compressor, heater, fan, and
pump to turn OFF.
To change the high limit value, rotate the Select/Set Knob until the desired value is displayed.
HL 95
Low Temperature Limit (LL)
This menu item also serves a dual function. First, it establishes the minimum allowable set point temperature
and thus helps prevent an operator from inadvertently selecting a temperature set point below a pre-established
value. Secondly, it serves as a low temperature alarm, automatically activating both audio and visual alarm
indicators if the measured fluid temperature drops to the LL setting. This also causes the compressor, heater,
fan, and pump to turn OFF.
To change the low limit value, rotate the Select/Set Knob until the desired value is displayed.
LL 39
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PolyScience DA500 Specifications

General

Brand	PolyScience
Model	DA500
Category	Chiller
Language	English