DEMA MixRite TF-25 Скачать руководство пользователя страница 8

  

  8

Adjustment of metering 

On  the  metering  cylinder  there  is  a  scale  indicating  the 

percentage  of  additives.  When  the  injector  is  not 

operating  and  there  is  no  pressure  in  the  unit,  turn  the 

adjustment  sleeve  clockwise  to  increase  the  amount  of 

additive or turn counterclockwise to decrease the amount 

of  additive.  The  actual  rate  should  be  checked.  If 

necessary,  adjust  by  increasing  or  decreasing  the 

adjustment sleeve.

 

 
Servicing 

The water filter at the inlet to the injector and the additive 

inlet filter should be cleaned frequently.  

 

 

* NOTE: If it is planned not to use the injector for a long time, it should be operated for a few 

minutes with the suction tube inside a tank of clean water, in order to flush away traces of additive 

from inside the injector and prevent them from adhering to it. 

If there is a drop in temperature below 4

°

C (40

°

F) risk or a risk of freezing, the injector should be 

drained.  In  order  to  drain  the  unit,  close  the  inlet  and  outlet  valves  properly.  Unscrew  and 

dismantle  the  1"  coupling  nut  that  connects  the  suction  tube,  press  on  the  non-return  valve 

(insert  your  finger  or  a  small  rod)  in  order  to  drain  all  the  water  trapped  in  the  unit,  while 

pressing the air bleed valve at the top of the injector (with your other hand). 

 

Suggested maintenance 

Replace injection seals every 12 months:   

Kit # 1- seals 0.1-1%(Catalog No. 35000000008) 

Kit # 2-TF seals 0.2-2.5%     (Catalog No. 35000000002) 

 Kit # 3-TF seals 1-5%  (Catalog No. 35000000003) 

Troubleshooting guide 

Problem 

Check 

Solution 

The injector is fitted with the arrows in the opposite direction to the 

water flow direction.  

Fit the injector with the arrows in the direction 

of flow.  

 .

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The injector 

does not 

work 

 

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Open the nut locking the motor cover, remove the motor cover, and 

remove the mechanism. Check if the motor seals are defective. 

Replace the motor seals. 

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Check if the seals above the valves are defective or have been 

displaced. 

Replace the seals. 

The injector 

has stopped 

working 

Check if one of the parts of the mechanism is broken. 

Replace the broken part. 

The leak is from the connection between the body and the cover. 

Open and remove the motor cover, replace the 

seal, fit the cover, and thoroughly tighten the 

cover locking nut. 

The leak is from the connection of the suction tube. 

Remove the suction tube, replace the defective 

seal and reconnect. 

There is a 

leak from 

the injector 

The leak is from the non-return valve. 

Dismantle the non-return valve and replace the 

defective seal. 

 

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Dismantle the injector unit and check if the suction seal is defective. 

Replace the suction seal. 

There is no 

suction in 

the additive 

inlet 

 

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For advice, technical support and purchase of spare parts, contact the authorized sales 

representative in your area. 

Содержание MixRite TF-25

Страница 1: ...MixRite TF 25 ...

Страница 2: ...ter passing through the MixRite TF 25 is between 2 and 25 m3 hour 530 6600 gal hour The water pressure is between 1 and 8 bar 14 120 PSI Head loss for MixRite TF 25 Minimum flow 0 1 Bar Maximum flow 1 5 Bar The water air temperature are not less than 4ºC 40ºF and not more than 40ºC 104ºF The flow rate of the additive can be adjusted relative to the flow rate of the water in the range of 0 1 to 1 f...

Страница 3: ...and a filter A stand comprising 4 legs 2 arched braces 4 bolts with 8 mm nuts and 4 bolts with 6mm nuts Spanner for TF cover nut User s manual To assemble the stand Insert the narrow part of the leg into the opening in the tube in the arched brace Make sure that the holes in the leg are opposite the holes in the arched brace Insert the 6mm bolt and tighten the nut Repeat with the other legs Attach...

Страница 4: ...tion tube Insert the flat seal into the nut of the coupling on the end of the tube 1 Thread and tighten the nut to the inlet valve on the underside of the injector Make sure that the nut is threaded and tightened properly 2 3 ...

Страница 5: ...t the pipe into the inlet and outlet opening and push hard so that the pipe penetrates and passes the seal and is stopped at the end of the route To ease Insertion apply a little silicon grease to the end of the pipe Push the white ring until it contacts the threaded part and tighten the nut Repeat the process in order to connect the pump to the pipe on the other side Optional Special grip ring fo...

Страница 6: ...ng of the line 1 water filter of 200 mesh 2 backflow prevention valve 3 must be fitted to a drinking water line according to local regulations in order to prevent entry of chemicals to the drinking water A pressure reducer 4 a T connection for diversion from the main line to the bypass a valve 5 on the bypass before the inlet to the proportioning dosing injector a valve 6 after the outlet from the...

Страница 7: ... a regulation valve 6 the injector a non return valve 7 after the outlet from the injector and a return connection to the main line 8 anti vacuum valve 9 Both sides of the instillation must be identical Connection to the additive tank The suction tube should be connected to the additive tank preferably about 5cm above the bottom diagram A The liquid additive must pass through a chemical resistant ...

Страница 8: ...site direction to the water flow direction Fit the injector with the arrows in the direction of flow s e v l a v e h t n e p O d e s o l c e r a s e v l a v t e l t u o d n a t e l n i e h T r e t l i f e h t n a e l C d e k c o l b s i r e t l i f t e l n i e h T The injector does not work e v l a v n i a m e h t n e p O e r u s s e r p e t a i r p o r p p a e h t t a w o l f r e t a w o n s i e ...

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