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K-RAIN MANUFACTURING CORP.

1640 Australian Avenue
Riviera Beach, FL 33404
(561) 844-1002

  |  

1.800.735.7246

  |  

www.krain.com

K-RAIN MANUFACTURING CORP.

1640 Australian Avenue
Riviera Beach, FL 33404
(561) 844-1002

  |  

1.800.735.7246

  |  

www.krain.com

BYPASSING THE SENSOR

Should you desire to bypass the operation of the rain sensor for any reason

 (i.e.,turn on your system even 

though the rain sensor has shut “off” due to rainfall), 

there is an easy way to do this. Simply go to the rain sensor 

and raise the rain quantity 

“cap”

 setting higher, or completely remove it altogether. This takes the pressure off 

the switch button, which allows the valve circuit to close again.

Note: Using the Manual switch on the controller may not bypass the sensor.

MAINTENANCE

There is no required maintenance for the unit. The rain sensor does not have to be removed or covered 
for winterizing purposes.

TROUBLESHOOTING

Follow these simple checks before replacing your rain sensor:

System will not come on at all:

A. 

Check to see that the rain sensor discs are dry and switch “clicks” on and off freely by pressing the top of 
the spindle.

B.

  Look for breaks in the wire leading to the rain sensor and check all wire junctions.

C.

  If the rain sensor is dry and the wire leading to it is good, check the rain sensor switch by nicking the 

insulation of the two

 “outer”

 wires near the unit to expose copper. Turn one sprinkler zone on, and apply 

“jumper wire”

 across the two exposed wires. If the sprinkler now comes on, the switch is bad. Wrap all 

nicked wires with electrical tape.

D.

  The rain sensor is wired to function with most controllers

 (normally closed).

 If you are unable to make the 

sensor work with the suggestion above you may have a unique controller 

(normally open).

System will not shut off even after heavy  rainfall:

A. 

Check wiring for correct installation 

(See “Adjustments and Operation” section).

B. 

Check sensitivity setting on rain sensor, and move the cap to a more sensitive setting. The rain sensor is 
an accurate rain gauge and can be verified by setting up a 

“tube”

 type rain gauge in the same vicinity and 

making periodic readings.

C.

  Check for obstructions to rainfall such as overhangs, trees or walls.

WARRANTY

K-Rain Manufacturing warrants that its products will be free from materials and workmanship defects for a 
period of 2 years. With proof of purchase provided, K-Rain will replace, free of charge, the defective part or 
parts found to be defective under normal use and service for the warranty period. Prior to replacement, K-Rain 
reserves the right to inspect and authorize the defective part or parts; all defectives  must be authorized in 
writing by K-Rain. Liability under this warranty is limited solely to the replacement or repair of defective parts. 
This warranty is given expressly and in place of all other expressed or implied warranties including but not 
limited to warranties regarding fitness for use of merchantability. No agent or representative has authority to 
waive or alter this warranty.

© K-Rain Manufacturing Corporation 

Made in China

AN ISO 9001:2008 CERTIFIED COMPANY

 

R2005101 Rev10

INTRODUCTION

Thank you for selecting a 

K-Rain R-200 RainSensor. 

This sensor will provide conservation, convenience, and 

flexibility to your fully automatic watering system. Never again will you see your sprinklers running on a rainy 
day. Now, after a set amount of rain has fallen, the sensor engages a switch that will prevent the controller from 
watering. Once the rain sensor has dried sufficiently, the sensor allows normal sprinkler operation.

RAIN SENSOR

INSTALLATION

MANUAL

RAIN SENSOR

INSTALLATION

MANUAL

R-200

Gutter & Surface Mount
Rain Sensor

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