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General installation checklist 

 
1) Place the softener where you want to install the unit. 

 NOTE: 

Be sure the softener is level and on a firm base.

 

 
2) During cold weather it is recommended that the installer warm the valve to room temperature before operating.

 

 
3) Perform all plumbing according to local plumbing codes. Use a 1/2" minimum pipe size for the drain. 
 
4) The 1" distributor tube must be flush with the top of each tank. Cut if necessary. Chamfer the end slightly in order to 
avoid the deterioration of the o-ring seal at the time of the assembly 
 
5) Use only non-aerosol 100% silicone lubricant for the distributor tube o-ring. Do not use any other type of grease or  
lubricant as they will cause damage to the valve. 
 
6) The Solder joints to the principal plumbing and the drain must be carried out before the softener is connected. Failure 
to do so could cause irreversible damage to the softener  
 
7) Use only ribbon Teflon ® to make any threaded connections. 
 
8)

 

Ensure that the ground under the softener is quite clean and to plan. 

 
9). Fill the softener cabinet with approx. 2” (50mm) water. Do not add salt to the brine tank at this time.

 

 
10) Put the by-pass valve of the softener into the "by-pass" position. Turn on the main water supply. Open a cold soft 
water tap nearby and let water run a few minutes or until the system is free of foreign material (usually solder) resulting 
from the installation. Close the water tap when water runs clean. 
 
11) Place the bypass into the

 

"Service" 

 

position and let water flow into the mineral tank. When water flow stops, 

slowly open a cold water tap nearby and let water run until the air is purged from the softener. Then close tap. 
 
12) When the softener is connected electrically, the valve may cycle itself and change over the position service. 
 
13) The valve includes an indicator to inform the fitter of its position: the wheel directly below the motor indicates the 
tank that is currently in the service position. The Digital display on the front of the softener alternates between the 
volume remaining in the service tank, the number of the tank in service (U-1 or 2 corresponds with the wheel: 
"INDICATION of the TANK IN SERVICE") and the time of the day.  
Important: to understand various dislays please refer to the service manual Programming chapter. 
 

14) Initiate a regeneration and bring the valve to cycle 1, by pressing the 

 regeneration button. The valve begins by 

transfering from one tank to the other and then entering the regeneration cycle of the tank that was in service. The water 
runs until the system is purged of the air. Once the air is completely evacuated, it enters the Brine draw & slow rinse 
stage and then into brine refil. On return to the service position repeat the precedure. This allows the complete purge of 
the second bottle.  
 
 
 
 

Summary of Contents for Pallas Duo

Page 1: ...Installation and Maintenance Manual Pallas Duo...

Page 2: ...minutes or until the system is free of foreign material usually solder resulting from the installation Close the water tap when water runs clean 11 Place the bypass into the Service position and let...

Page 3: ...Wiring Diagram Up Flow...

Page 4: ...Wiring Diagram Up Flow Chlorinator...

Page 5: ...Exploded Diagram Power Head Up Flow Ref 28396...

Page 6: ...9000 15 2 15172 SCREW FLAT HEAD 4 40 x 1 38 16 1 15199 GROUND PLATE 9000 9500 17 2 15372 THRUST WASHER 18 2 15692 SPACER 19 2 15810 RETAINING CLIP 20 1 16433 MICROSWITCH 21 1 17315 DRIVE NUT 9000 950...

Page 7: ...Exploded Diagram Power Head Up Flow chlorinator ref 28363...

Page 8: ...000 9500 16 2 15372 THRUST WASHER 17 2 15692 SPACER 18 2 15810 RETAINING CLIP 19 1 16433 MICROSWITCH 20 1 16442 SCREW AUX SWITCH 21 1 17315 DRIVE NUT 9000 9500 22 1 17592 CAPACITOR 23 2 25651 TRANSFOR...

Page 9: ...3497 AIR DISPERSER 3 1 14906 END PLATE 4 1 14928 END PLUG STUD 5 4 15137 SCREW HEX WASHER HEAD 10 24 X 3 8 6 1 28246 INJECTOR ASSEMBLY 9100 UF 7 1 28173 PISTON LOWER ASSEMBLY 9000 UF 8 1 25642 SEAL SP...

Page 10: ...N 1 1 18303 01 O ring 2 1 18569 Retainer tank seal 3 1 19054 O ring 4 1 40673 2nd tank adapter 5 1 40538 O ring retainer 32mm 6 1 61419 Distributor adapter kit 10 1 13304 01 O ring 7 2 13255 Clip 8 2...

Page 11: ...Exploded diagram Water meter assembly ITEM QTY PART No DESCRIPTION 1 1 19797 METER BODY ASSY TURBINE 2 2 19569 CLIP FLOW METER 3 2 13314 SCREW HEX WASHER HEAD 8 18 x 60...

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