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3961 MV Wijk bij Duurstede
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2.3
OPERATING THE MIXING UNIT WITHOUT RECYCLING SYSTEM
To maintain a continuous mixing process add water and bentonite in the correct ratio. And a minimum of 250ltr water per
min.
2.4
OPERATING THE MIXING UNIT IN GENERAL
When the mixing unit is in service the responsible mud man has to keep checking all items discussed in chapter 1.3 and 2.1
on a regular basis. Extra to that is checking mud level in the mixing tank and keeping the right viscosity of the mud.
Fill the tank with water for at least ¾ open venturie valve and slowly the hopper valve, make sure that al the other valves are
closed. Start adding dry product at the right ratio. When you have a right mixture close hopper valve.
When mixing only open venturie valve and hopper valve, when circulating and using outlet always close hopper valve.
Only open max 2 valves at the same time, the operator has a choice between nozzles with venturie for max circulation or
nozzles with outlet to HP pump.
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!
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 the pump without de-aerating the pump or without fluid.
In case of use of recycled fluid, mount stainless eductors/tank nozzles in the tank.
2.5
SERVICING ON THE MIXING UNIT AND EXCHANGING PARTS
1.
Before you start working on the unit, stop all functions and switch off the main switch.
2.
Disconnect main power cable.
3.
Before you start working on the pump close all valves and drain the pump.
READ GR INSTRUCTION MANUAL TO REPLACE PARTS ON THE GR PUMP
