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Molenvliet 28 

3961 MV Wijk bij Duurstede 

+31 343 595 400 

www.sitetec.nl [email protected] 

 

 

 

In all cases in which we act as offerer or supplier, our offers, assignments given to us and agreements concluded with us are subject to the METAALUNIE 

TERMS AND CONDITIONS. These terms and conditions have been filed at the Registry of the Rotterdam District Court. The Dutch law is applicable on all 

our agreements. KVK nr. 34043947 | VAT/BTW nr. NL.0034.76.443.B01 |  IBAN NL94ABNA 0565320300

 

 

2.2 

CHECK BEFORE STARTING THE MIXING UNIT 

 
Before starting the unit you must do a quick check of all components of the unit: 
 

1.  Check the pump:  

- fluid levels 

 

 

 

 

- debris plugging suction 

2.  Open suction valve and close drain valve  

 
 

2.3 

STARTING THE MIXING UNIT 

 
First make your self acquainted with the valve schedule in 2.1 
 

1.

 

To start the mixing unit, fill the tank with ¾ water 

2.

 

Open suction valve mix pump from mix tank nr. 1 

3.

 

Close the air bleed valve on the impeller housing of the mixing pump when all air is out of the pump 

4.

 

Open the discharge valve from pump to venturi nr. 2 

5.

 

Start diesel engine 

6.

 

Now you can start mixing bentonite with the unit: open the valve of the hopper approx. half way 

7.

 

Now suction noise will be heard out of the hopper funnel. Slowly add bentonite 

8.

 

Add bentonite until required mud-viscosity is reached 

9.

 

Open discharge valve to nozzles 

10.

 

Run the unit for a few minutes: keep in mind that the viscosity of the mud will increase in this time as the mud is 
being sheared 

  
As mud is being used the fluid level inside the mixing tank must be maintained. Add water and bentonite on time and, if a 
mud recycling unit is used, check the mud level of the mud pit. With a SiteTec recycling unit, mud will be transferred from 
the recycling unit to the mixing unit. This means you have to add very little bentonite and/or water, keep the mud level in 
the mixing tank to its maximum and in the right condition. 
 

2.4

 

OPERATING THE MIXING UNIT WITHOUT RECYCLING UNIT

 

 
To maintain a continuous mixing process add water and bentonite in the correct ratio. With a minimum of 500 liter water 
per minute. 
 

2.5  

OPERATING THE MIXING UNIT IN GENERAL

 

 
Before using the mixing unit always check all items of chapter 1.3 and 2.2.  
 
Fill ¾ of the tank with water. Make sure the level reaches above the centrifugal pump. Open venturie valve and slowly the 
hopper valve, make sure that all the other valves are closed. Start adding dry product at the correct ratio. When reached the 
correct mixture close hopper valve. 
 
When mixing only, open venturie valve and hopper valve, when circulating and using outlet, always close hopper valve. 
For max circulation use nozzles with venturie. To charge the High Pressure pump, close venturi and hopper valves and 
open nozzles valve. 
 
If no mud is used you can close the valve of the hopper and stop the mixing pump. 
This reduces wear of the unit. Do start-up before mud is needed! 
 
Never start without deaerating the pump or without fluid. 
In case of use of recycled fluid, mount stainless eductors/tank nozzles in the tank. 

2.6 

SERVICING ON THE MIXING  UNIT AND EXCHANGING PARTS 

Summary of Contents for M405D

Page 1: ...ict Court The Dutch law is applicable on all our agreements KVK nr 34043947 VAT BTW nr NL 0034 76 443 B01 IBAN NL94ABNA 0565320300 Unit manual M405D mixing unit First of all we like to thank you for purchasing this mixing unit and hope it will be of complete satisfaction to you This product is built to perform easy to maintain and is user friendly To insure a long lifetime of this quality product ...

Page 2: ...NL94ABNA 0565320300 OPERATING MANUAL 1 1 MOBILISATION 1 2 PLACING THE MIXING UNIT ON SITE 1 3 OVERALL CHECK OF THE MIXING UNIT 1 4 CAPACITY PARAMETERS 2 1 VALVE SCHEDULE 2 2 CHECK BEFORE STARTING THE MIXING UNIT 2 3 STARTING THE MIXING UNIT 2 4 OPERATING THE MIXING UNIT WITHOUT RECYCLING UNIT 2 5 OPERATING THE MIXING UNIT IN GENERAL 2 6 SERVICING ON THE MIXING UNIT AND EXCHANGING PARTS 3 1 12 HOUR...

Page 3: ...re securely tied down 2 Take the ignition key out of the control panel 3 Make sure the mixing tank pump and piping is drained and cleaned 4 Open all valves NEVER 1 Stand or walk underneath the load 2 Use certified lifting equipment 1 2 PLACING THE MIXING UNIT ON SITE Before you place your mixing unit on location make the following preparations 1 Place a sheet of 4x4 meters of oil resistant plastic...

Page 4: ...or debris in the mixing tank Tank must be clean 2 Put 2 pump strokes of high quality bearing grease in all nipples on the AMTEQ pumps 3 Check if all electrical cables and wires are still in good condition repair if necessary 4 Check overall for any damaged or loose parts and repair if needed 5 Check all guards 6 Check the tank for cracks 1 4 CAPACITY PARAMETERS This unit is capable of mixing 500 l...

Page 5: ...n this time as the mud is being sheared As mud is being used the fluid level inside the mixing tank must be maintained Add water and bentonite on time and if a mud recycling unit is used check the mud level of the mud pit With a SiteTec recycling unit mud will be transferred from the recycling unit to the mixing unit This means you have to add very little bentonite and or water keep the mud level ...

Page 6: ... When the mixing unit is running on a 24 hour shift check the unit overall as described in 1 3 2x in 24 hours 3 3 WEEKLY MAINTENANCE For weekly maintenance on the mixing unit the following activities are recommended 1 Check the unit overall as described in chapter 1 3 2 Clean the complete unit including the tank 3 Grease all nipples on the AMTEQ pump see the AMTEQ instruction manual use Shell RHOD...

Page 7: ...ockets to demobilize this mixing unit Prior to lifting the mixing unit a few handlings must be made 1 Drain the unit by opening the drain valve on the pump and bottom of tanks 2 Undo all hoses and open all drain valves 3 Clean the whole unit including the inside of the tank When all this is done you can lift the unit with a forklift NEVER 1 Stand or walk underneath the load 2 Use certified lifting...

Page 8: ...o have the following wear parts on stock When ordering parts always mention unit type and serial number WEAR PARTS MIXING UNIT M405D pos AMTEQ MudMax 3 x 2 x 11 1 Mechanical seal MudMax 2 Stuffingbox for mechanical seal 3 Ceramic Shaft Sleeve 4 Graphite packing 5 11 Impeller 6 Housing for 3 x 2 x 11 7 Victaulic clamb 2 and 3 8 Victaulic clamb 2 and 3 rubber 9 Waterfilter 10 Waterfilter cup 11 Oilf...

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