John Deere ac-1500eh User Manual

John Deere Operator's Manual   

 

 

 

 

 

 

 

19

1.  Move the switch to the "Pump" position.

2.  Squeeze the trigger and discharge the water for a period of three minutes  

to cool the heat exchanger and high pressure hose.  (Insufficient cool down 

period of the high pressure hose will cause excessive wear and eventual  

rupturing of the hose.)

3.  Move the switch to the "OFF" position.  (Auto Start/Stop Option will shut  

the unit down, but total shutdown requires switch to be moved to the  

"OFF" position.)

4.  Turn off the water supply and trigger the gun momentarily to relieve trapped 

pressure.

5.  Disconnect and drain the high pressure hose, gun, and dual lance. Wipe the 

unit clean and store in a non-freezing environment.

PUMP:  Change the pump oil after the first 50 hours of operation.  After initial change, 

every 3 months or 250 hour intervals are recommended.  If oil appears dirty or 

milky, changes may be required in greater frequency.  Use pump oil SAE20 or 

30 and fill only to the center of the oil sight glass.  DO NOT overfill.

QUICK COUPLERS:  There are o-ring seals inside the couplers which will deteriorate.  

To replace, simply install a replacement o-ring to correct the leak.  (Additional 

o-rings can be purchased from your dealer.)

NOZZLE:  Water flow through the spray nozzle will erode the orifice, making it 

larger, resulting in a pressure loss.  Nozzles should be replaced whenever 

pressure is less than 85% of the maximum. The frequency of replacement will 

depend upon such variables as mineral content in the water and number of 

hours the nozzle is used.

FUEL WATER SEPARATOR:  The fuel filter has a built in water separator.   

Occasionally  the  water  has  to  be  drained  from  the  separator.    Follow  the 

procedures listed below:

 

 

 

1.  Check the collection bowl daily.

 

 

 

2.  Ensure the unit is off and place an oil catch basin under the  

 

 

 

fuel cartridge.

 

 

 

3.  Loosen the drain plug to allow the fuel/water contaminents to  

 

 

 

flow into the catch basin.

 

 

 

4.  Retighten the drain plug when completed.

 

 

 

5.  Dispose  of  drainage  according  to  environmental  regulations  in  

 

 

 

your area.

BURNER AIR ADJUSTMENT:  The air shutter has been factory preset for proper  

operation between sea level and 2000 feet elevation at standard conditions 

(60°F ambient water and air temperatures).  To assure maximum combustion 

efficiency  at  colder  temperatures  and  higher  altitudes,  it  will  be  necessary 

to  adjust  the  air  supply  to  the  combustion  chamber.   A  smoke  spot  test  is 

recommended during any air shutter adjustment.  This will aid in maximizing 

the burner efficiency and avoid the inefficient operation and excessive  

sooting of the combustion chamber.

 

 

1.  The machine must be running and the burner on.

 

 

2.  Take a smoke spot test to determine if more or less air is  

 

 

required for proper combustion. 

 

 

 

a.  If  the  test  is  greater  than  a  #3  smoke,  turn  the  shutter  

 

 

 

 

arm  counterclockwise  to  increase  the  air  flow  into  the  

 

 

 

 

combustion chamber.

 

 

 

 

b.  If  the  test  is  yellowish  in  color,  turn  the  shutter  arm  

 

 

 

 

clockwise  to  decrease  the  air  flow  into  the  combustion  

 

 

 

 

chamber.

 

 

3.  Hold onto the air shutter adjusting arm and loosen the locking nut.   

 

 

Move  the  shutter  in  1/8"  increments  and  retighten  the  locking  nut  

 

 

after each 1/8" movement.

 

 

4.  Trigger  the  gun  on  and  off  slowly  to  make  sure  there  is  proper  

 

 

ignition.  Slight or no puffing on the ignition, and a smoke spot test  

 

 

of 0-3 is good. 

 

5.  Repeat steps 2 and 3 until step 4 is attained.

LEAKS:  Promptly eliminate any leaks found in the pumping system by removing  

 

 suspect parts, applying thread sealant to the threads and reinstalling.