DEMA Master Nitro Express Manual
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DEMA Master Nitro Express Manual

DEMA Master Nitro Express Manual

Ware wash chemical dispenser
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Overview

The DEMAMaster Nitro Express is an analog ware wash dispenser designed to dispense cleaning chemicals into ware
wash and dish machines. The unit is triggered by a ware wash machine. Programming is accomplished through the use
of potentiometers and dip switches. The unit can be set in Probe or Probeless mode and utilizes the proven quick change
pumps to pump up to 8 oz. per minute.

Warnings

Installation of DEMA products must meet all applicable electrical codes and regulations established
by national, city, county, parish, provincial or other agencies. It is possible that electrical codes and
regulations require that a certified electrical contractor or engineer perform the electrical installation.
For questions, contact a certified electrician.
All installations must conform to local plumbing codes and use approved backflow prevention
devices. A pressure indicating tee is to be installed with existing faucets according to local plumbing
codes in the state of Wisconsin and any other state that requires the use of a pressure indicating tee.
ALWAYS WEAR PROTECTIVE CLOTHING AND EYEWEAR WHEN WORKING WITH
CHEMICAL PRODUCTS.
I-1022
Rev. B-36992
6/17/11
DEMAMaster Nitro Express
Ware Wash Chemical Dispenser
Page 1 of 8

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Summary of Contents for DEMA Master Nitro Express

  • Page 1 8 oz. per minute. Warnings Installation of DEMA products must meet all applicable electrical codes and regulations established by national, city, county, parish, provincial or other agencies. It is possible that electrical codes and regulations require that a certified electrical contractor or engineer perform the electrical installation.
  • Page 2 Packing List X = included in kit Part Number Description 904.8T RINSE CHECK VALVE ¼” OD TEFLON BALL 80.55 LIQUID DETERGENT FEED INJECTION ELBOW 81.312.1 SPLIT PICK UP TUBE STIFFENER 25.68.20 20 FT ¼” OD LDPE TUBING C.12B CONDUCTIVITY CELL 100.12.SV1 VINYL RINSE TUBING 58.5...

  • Page 3: Replacement Parts List

    Replacement Parts List Model shown is of a NE.LL.A KIT NO. DESCRIPTION DM NITRO EXPRESS POWER SUPPLY REPLACEMENT KIT (TRIGGER OUTPUT 81.316.1 TRANSFORMER) 81.316.3 CONTROL BOARD DM NITRO EXPRESS WITH SANITIZER (3 PRODUCT) 81.118.29.1 PUMP – 2 SPRING ROLLER, 60 RPM MOTOR ¼” ID KIT 80.59.60MK 60 RPM DETERGENT MOTOR 44.123.14B...
  • Page 4 2. Properly ground the dispenser to earth ground. 3. If the Nitro Express will be operating in the concentration mode, locate the proper position for the DEMA C- 12B probe in the wash tank. The probe must be installed below the water level, normally 1-2” from the bottom of the tank, and must be kept away from heating elements, pump intake, drains and incoming water supply.
  • Page 5 BROWN – WASH TRIGGER (HOT) WHITE – WASH TRIGGER (RETURN) DISH MACHINE ELECTRICAL BLACK – RINSE TRIGGER (HOT) CONNECTION LABEL POINT SHOWN RED – RINSE TRIGGER (RETURN) L1255 GREEN – EARTH GROUND 1. Connect the wash trigger (white and brown wires) to the appropriate wash trigger output (between 100 and 265 VAC 50/60Hz) as recommended by the dish machine manufacturer.
  • Page 6 PRESS SWITCH THIS  WAY FOR ON PRESS SWITCH THIS   WAY FOR OFF Potentiometers (Knobs) The potentiometers can be set according to the following charts. Each of the next four figures will outline various configurations that are possible. For more information on these configurations consult pages 5-6 to see how to set up the dip switches for the configurations.
  • Page 7 The settings for the probe configuration are the same when the dispenser is being used in door or conveyor mode. Detergent Concentration Level – The detergent knob sets the DETERGENT concentration level or set point. DEMA Engineering recommends Concentration starting in normal range (set using switch 3) and using a titration kit to Normal Range achieve the desired detergent concentration level.

  • Page 8: Troubleshooting

    Rubber and synthetic rubber parts such as “O”-rings, diaphragms, PVC tubing, and gaskets are considered expendable and are not covered under warranty. This warranty is extended only to the original buyer of DEMA products. If products are altered or repaired without prior approval of DEMA, this warranty is void.

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