DEMA I-668
Pg. 1 of 9
Rev C-28236
INSTRUCTION MANUAL FOR DEMA CHEMASTER
TM
DM-813-LLL-1T, DM-813-LLL-2T, DM-813-DLL-1T and
DM-813-DLL-2T
Introduction
The Chemaster series is a comprehensive range of single and dual function units for Industrial
DishWashing, Trash Treatment, and Chemical Transfer etc.
Units are encased in a heavy-duty plastic housing with a sealed cover that has a Mylar label for access of
external control and visibility of indicators. Options range from powerful long lasting peristaltic pumps
for liquid products to solenoid valves for dry products.
Pumps are available in three sizes and are coupled to 15, 60 or 105 rpm motor/gear boxes that yield flow
from .02oz/min. (0.5ml/min.) to 47oz/min. (1.4 liters/min). In addition to these units, original equipment
manufactured pump/motors are available in sizes up to 1 ½ GPM (6 LPM) and are available with different
tubing material for individual applications.
.
All units are equipped with a built in transformer (single or dual) depending on the model, with primary
voltages of 120,208, 240/50-60Hz and secondary voltage of 24/50-60Hz for maximum safety and
reliability. Circuit boards for detergent control are available as probe units, variable speed and timed
units; combined with a variable speed board for the rinse (second pump). Various combinations may be
constructed from this range of components.
All units are packaged with installation kits and this instruction.
System Features
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Heavy Duty ABS Plastic Case
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Splash proof heavy duty Mylar label(Customized labels are available)
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External access to prime function
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Special low current output on Speed Control units
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Metal motor/gear boxes with 2000 plus hours of brush life
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Patent Pending on control software
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Components are interchangeable within the industry
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Separate 40VA transformer for each motor
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Longer pump tubing life due to special elastomer formula
Operating Mode
The conductivity control is designed with unique software that maintains a high degree of accuracy due to
its way of controlling the dispensing device (pump or solenoid valve).
After the controller is engaged, the indicator turns red (power on). When the indicator turns yellow, the
unit is in calculation mode. During this cycle the unit checks values received from the probe and
calculates whether or not to start the pump/solenoid valve. If additional chemical is needed, the control
operates the dispensing device in an on/off cycle mode: Green light is on for 7seconds and then off for 7
