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The DC4000 can be programmed for a variety of different tasks. Before start-up can be completed, certain information
must be decided regarding the controller programming.
The following work sheet should be filled out in advance to aid in the programming of the controller.
The single most important decision is whether the controller will be used for cooling tower, boiler, or closed loop control.
If operation is not cooling tower or continuous sample boiler, the set-up menu will be used to select falling trip point for
closed loop systems or to select the boiler mode.
4.2 Pre-Start-Up Work Sheet
Pre-Start-Up Work Sheet
1. Current system conductivity in µS
2. Desired conductivity set point in µS
3. Differential value (range) in µS
4. Method of chemical feed to be used
a.)
External (PULSE):
0-999 seconds run - time,1-100 counter
b.)
% of TIME:
0-100 minute cycle, 1-100% of time
c.)
% of control (BLEED): 1-100% of control
d.)
Limit (FEED and BLEED): 1-999 minutes
5. Feed timer setting
min/sec/cycle
6. High alarm setting
7. Low alarm setting
8. If flow switch is used, does it activate the alarm when flow is lost? YES NO
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