REMINDER FOR ADJUSTING THE SET-POINT
LAB STORAGE TANKS
18
98-0123 Rev E
8
REMINDER FOR ADJUSTING THE SET-POINT
An alarm lock occurs when the water quality goes below the low set-point creating an alarm. For the
alarm condition to clear, the water quality must rise above the high set-point. When adjusting the set-
point, it is suggested to set the high set-point range 1 to 5 mega Ohms above the low set-point to offset
the alarm lock.
8.1
Setting Set-Points on Resistivity Controller
1.
Press and hold the SET-POINT button on the resistivity controller and press the ADJUST button.
2.
Release both buttons. –LO- will be displayed momentarily, followed by the current low set-point
value.
3.
The LCD’s highest digit will be displayed first. To change this, press the SET-POINT button until
the desired first digit is displayed.
4.
Toggle to the next lower digit by depressing the ADJUST button.
5.
Depress SET-POINT to change to the desired value and ADJUST to go to the next lowest digit.
6.
Continue these sequences until the desired –LO- set-point value is entered.
7.
Press the ADJUST button. –HI- will be displayed momentarily, followed by the current high set-
point value.
8.
The value can be adjusted in the same manner as the –LO- set-point.
8.2
Adjusting Relay Resistivity Time Delay
The delay on the relay timer can be set from 0-120 seconds to allow for rinse up of the equipment. To
modify the settings, take the following steps.
1.
Press and hold DELAY then press the ADJUST button.
2.
Release both buttons. The display’s hundreds digit will flash.
3.
To change this digit, press DELAY button repeatedly until the desired number is achieved.
4.
Press the ADJUST button to toggle to the tenths digit.
5.
To change this digit, press the DELAY button repeatedly until the desired number is achieved.
6.
Press the ADJUST button to toggle to the final digit.
7.
Press the DELAY button repeatedly until the desired number is achieved.
8.
The monitor will automatically return to its normal operating modes after a short interval. Any
changes made will be automatically saved.
8.3
Using the Resistivity Relay
Summary of Contents for 00HC-4090
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Page 7: ...COMPONENT IDENTIFICATION LAB STORAGE TANKS 5 98 0123 Rev E 2 COMPONENT IDENTIFICATION...
Page 8: ...COMPONENT IDENTIFICATION LAB STORAGE TANKS 6 98 0123 Rev E...
Page 9: ...COMPONENT IDENTIFICATION LAB STORAGE TANKS 7 98 0123 Rev E 2 1 Flow Schematic...
Page 15: ...OPERATION LAB STORAGE TANKS 13 98 0123 Rev E Figure 3 Grundfos Eye Indicators...
Page 16: ...OPERATION LAB STORAGE TANKS 14 98 0123 Rev E 5 2 Default Pump Program...
Page 28: ...REPLACEMENT PARTS LAB STORAGE TANKS 26 98 0123 Rev E 11 REPLACEMENT PARTS...
