AMS-S1M Owners Manual

Automatic Misting System AMS-S1M Operation Manual


Thank you for your recent purchase of an Automatic Misting System manufactured by Mosquito Control equipment. This manual will guide you through the setup, operation and maintenance of your system.


 General safety considerations

  •  There are a variety of concentrated repellents and insecticides for use in Automatic misting systems.  Only use chemicals that are labeled for use in Automatic Misting systems. Read all labels and Data Sheets carefully, following all instructions regarding application, dilution rates, storage and disposal. Some misting concentrates may be toxic to fish or may burn plants. When locating nozzles, prevent mist from drifting off property. The Insecticide label should be attached to the drum in a weatherproof pouch.
  • Once assembled and programmed, the control box and drum clamp ring should be padlocked to prevent access by children.
  • Electrical Shock Hazard. Disconnect the power source before servicing. Failure to do so could result in serious injury or death.
  • The System should be located in a clean, level, covered area, free from flooding and runoff, near a GFCI (ground fault circuit interrupter) protected outlet rated for 15 Amps minimum. Extension cords should not be used.


Operation Notes

The Program Clock

  • To set clock – Turn the minute hand clockwise until the time of day on the outer dial is aligned with the triangular marker on the inner dial. Clocks initiate spray cycles by passing pulled pins along the clock face. Each pin represents 15 minutes. Clocks are mechanical devices; they contain moving parts that can be damaged by excessive dusk and debris. Please keep the enclosure door closed and use system covers when needed.  Setting the Clock: Turn the Minute hand clockwise until the time of day (AM or PM) on the outer dial is aligned with the triangular marker on the inner dial. For systems with a Digital clock see FAQ section or the Timerco Digital Clock Programming guide on AMS-D page.

Spray time adjustment

  • The misting time may be set between 5 and 180 seconds by adjusting the knob below the Program Clock

Float Ball

  • The Float Ball is attached to an internal micro-switch. When the tank is empty, the micro switch automatically shuts off the system to keep the pump from running dry. Note: The system will not be operable until the tank is refilled.

Pressure Gauge

  • While the pump is running the pressure is displayed on the Pressure gauge. The normal range is between 180 and 200, Note: if the PSI is set to 250 or above the pump will go into bypass mode and will no longer pump any fluid.

Needle valve

  • To adjust the pressure, turn the needle valve clockwise to increase, counter-clockwise to decrease. Note: if the PSI is set to 250 or above the pump will go into bypass mode and will no longer pump any fluid.

Mist Now Button

  • A misting cycle may be initiated on demand by pushing the Mist Now button. Note: if the program clock is at a white captive tripper, the Mist Now button will not work until it has passed the tripper. 

Initial setup; Mount nozzles 8 to 10’ apart, connect unions with tubing ensuring good connections by pressing firmly until tubing “seats” into place. Connect 1/4″ supply line, from nozzle circuit, to the 1/4″ output fill your reservoir about 50% with water only and plug in system. At the control box, turn the Misting Time knob to its highest setting and then press the “Mist Now” button. Let pressure build and adjust it with the needle valve to 190-200 PSI using the liquid filled pressure gauge. Walk the Nozzle circuit checking for leaks, and spray pattern. Adjust to suit. Note: PSI at or above 250 will cause the pump to go into bypass, nozzles will not spray.  .

Tank Filter Cleaning: Each time you refill the drum with misting concentrate, rinse the filter to remove any excess residue. Replace the tank filter once corrosion and wear is visible on the mesh as a clogged filter can damage the pump and motor assembly. It is recommended to replace the filter once a year.

Winterizing: Winterizing your Mosquito Misting system is required if you live in a climate where the temperature can drop below freezing. First, flush the lines and nozzles with clean water by allowing the pump to run continuously for about 5 minutes. Second, disconnect the output line going to the nozzles. If the Tank is the lowest point in the system the line should drain by gravity. If it is not, find the low spot(s) in the system and disconnect the line and allow it to drain. If you have an air compressor connect it to the output line and remove the furthest nozzle and blow out the water in the line. Finally, remove the intake line, connect a short piece of 1/4″ tubing to the output fitting and place the other end in the tank (This is so any fluid in the pump will be deposited in the tank and not all over you). Run the pump 10-15 seconds to clear any solution that may be in the pump. If your tank is outdoors, replace the protective cover to keep your system clean and dry. If you have prolonged periods of below freezing temperatures, you may want to bring the pump indoors for the winter


Mosquito Control Equipment One Year Limited Warranty

Products covered: The following Mosquito Misting system products manufactured by Mosquito Control Equipment are covered by this limited warranty: AMS-MM, AMS-MM+20, AMS-S1M, AMS-A, and AMS-D

How long is the warranty?: The warranty begins on the date of purchase and lasts for one year

What is covered: This Limited Warranty covers any defects in material or workmanship under normal use during the Warranty Period.

What is not covered

1) Filters. 2) Damage due to misuse, abuse, neglect, theft, vandalism, unauthorized repairs or attempted repairs, natural disasters, acts of God or terrorism. 3) Damage in shipping to or from the manufacturer. 4) Shipping and packaging of a system returned for a warranty claim. 5) Any special, indirect, exemplary, incidental or consequential damages arising out of or in connection with the product, any other materials or services furnished hereunder, to the greatest extent allowed by applicable law.

How to make a Warranty claim

Please contact the factory by email (, telephone (1-800-805-5049) or mail and provide your name, ship to address, telephone #, email address, serial #, date of purchase and a description of the product defect. A warranty technician will be assigned to your case and contact you to diagnose and troubleshoot the problem. If the product must be sent to a factory service
center for repair they will issue you a return authorization # and provide you shipping instructions. Please do not return products to the factory without a return authorization number as they will be rejected, returned to sender freight collect. This warranty is the sole exclusive remedy regarding any potential defects of the product and is limited to the repair or replacement of the product purchased.

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