Cleaning Clean the watering computer with a light cloth moistened
with water and mild soap. Clean the filter in the spigot nut regularly. Remove the hose from the watering computer. Unscrew the watering computer from the water spigot. Remove the cone-shaped coarse screen from the water inlet in the spigot nut. Clean the filter. Insert the filter back into the spigot nut. Reconnect the watering computer and the water hose.

Technical Data

Minimum rate of flow: 15 l/min. Operating water pressure: 1.3798.274 bar Power supply: 2 x 1.5 V, alkaline batteries Keypad: Splash-proof.
Watering Computer KH 4038 Operating Manual

Disposal

Never throw the watering computer or the batteries into normal household waste. Contact your city or community administration for information on how to properly dispose of the device in an environmentally sound fashion. Drop off used batteries at a collection site.
Troubleshooting Warranty and Service
The display is blank Check the batteries. Insert the batteries with the correct polarity or replace them with fresh ones. Watering does not start at the programmed time Check the programming and change it if necessary. Check the batteries. Insert the batteries with the correct polarity or replace them with fresh ones. The water spigot is not open. Open the water spigot. If the watering computer still does not function correctly, please contact the manufacturer. The warranty conditions and the service address can be found on the warranty slip. Komperna Handelsgesellschaft mbH Burgstr. 21 D-44867 Bochum
ID No. KH4038-11/04 www.kompernass.com
Safety Instructions Poison Hazard!
Keep the batteries out of the reach of children.
Explosion Hazard! Never throw batteries into the fire. Important! Failure to follow these safety instructions could damage the watering computer and void your warranty. Do not let water enter into the housing. Check the battery charge status and replace new batteries if you are not using the irrigation computer over a longer period of time. Always replace both batteries and make certain the polarity is correct. Replace empty batteries in a timely fashion. Leaking batteries could damage the watering computer. Never charge alkaline batteries. Inspect the watering computer and its supply lines at regular intervals for proper seal and function. Never press the buttons with your finger nails or with sharp objects. Reprogram the watering computer when you have removed the battery compartment from the housing. Before inserting the battery compartment, wait at least 30 seconds so that the program memory is completely deleted. Proper Use
The watering computer KH 4038 is intended exclusively for permitting or preventing water flow at a specific time. It is intended only for use in private households and gardens. Any other use is considered improper, in particular use in drinking water systems and for growing food.
Display Figure B Time display Watering frequency display Program number display Countdown symbol Hand symbol Watering on/off
Programming You can program up to 6 on actions and 6 off actions. Press the "M" button until a bar appears above the P in the display. The watering computer is now in the programming mode. A U or the number 7 is shown in the display to the right of FREQ. Setting the Watering Frequency
Set the watering time as described under "Setting the

Watering Time".

Press the "M" button until a bar appears above the A in
the display. The watering computer is now in automatic mode and will execute the configured programs. Deleting a Program Press the "M" button until a bar appears above the P in the display. Press the button until the desired program appears in the display. Press the button. The program is deleted and the programmed time is no longer shown in the display. Press the "M" button repeatedly until a bar appears above the A in the display. The watering computer is once again operating in automatic mode. Skipping a Program If you would like to switch the watering computer on or off despite a program, you can skip the current step. Press the button. The skip symbol appears in the lower right of the display. When the next programmed on/off action is reached, the watering computer automatically switches back to automatic mode. Setting the Manual Mode or Countdown button. blinks in the display and OFF is shown. Press the button to move ahead one sequence. The following sequences are available: Off, on, 8:00, 7:00, 6:00, 5:00, 4:00, 3:00, 2:00, 1:00, 0:45, 0:30, 0:15, 0:10, 0:05. OFF, ON or the sequence appears in the display. Once you have selected a countdown sequence, the symbol disappears and the countdown symbol appears in the display.

Operation

Every selection in the watering computer must be confirmed with the button. Inserting the Batteries The battery compartment is located on the bottom of the watering computer. Replace the batteries regularly. If the display indicates -LO-, the batteries are empty. Flip the locking lever of the battery compartment forward. Pull the battery compartment out of the housing. Insert two AA batteries into the battery compartment, making certain that the polarity is correct. Insert the battery compartment back into the housing and secure it with the clip. The watering computer retains its programming as long as -PO- blinks in the display. When the display goes blank, the programming has also been deleted. Connecting to the Water Network Turn the inflow connection to a suitable tap (1 outer thread). Turn the outlet connection to a hose. Make sure that the outlet connection is always turned downwards. Setting the Clock Open the cover. Press the "M" button repeatedly until a bar appears in the display above the symbol and a bar blinks under MON. The watering computer is now in the clock setting mode. Press the "+" or "" button to set the current day of the week. The hour value blinks in the display. Press the "+" button or the "" button to set the current hour. The minute value blinks in the display. Press the "+" button or the "" button to set the current minute. The clock is now set.
Select the setting for the watering frequency with the
"+" button or the "" button. Program: U: User-defined watering (e.g. Mon., Wed. and Fri.) 1: daily 2: every second day 3: every third day, etc. The frequency of the watering is shown in the display next to PROG. is shown in the display on the left. Setting the Watering Time Select a program number with the "+" or "" button. The program number is shown in the display next to PROG. Press the "+" button or the "" button to set the starting time (hour). Press the "+" button or the "" button to set the starting time (minute). is shown in the display on the left. Follow the same steps to set the stopping time. Press the "M" button until a bar appears above the A in the display. The watering computer is now in automatic mode and will execute the configured programs. Setting Watering on Specific Days of the Week Press the "M" button until a bar appears above the P in the display. Press the "+" button until the watering frequency is set to U. A U appears next the FREQ on the right side of the display and a bar blinks beneath all the days of the week. Press the button to select the day of the week. is shown in the display on the left and the bar under MON blinks. Select a day of the week with the "+" and "" buttons. Confirm your selection by pressing the button to select a program number. Select a program number with the "+" or "" button. The program number is shown in the display next to PROG. Press the button.

Press the

Delivery Contents
Watering computer KH 4038 Operating manual (no figure)

Description

Figure A Water spigot connection (3/4) Hose connection (3/4) Cover Operating panel Display
Closing the Cover Close the cover after programming.