Multiquip CV3A/3B Manuel D’Utilisation

Before connecting any of the flexible shafts referenced in 

this manual, please read all operating instructions relating 

to the drive motor associated with the flexshaft.
Using the wrong drive motor can adversely affect the 

performance of the flexshaft/vibrating head. Selecting too 

large a flexshaft/vibrating head combination will overload 

the motor and cause excessive wear.
1.  Hold vibrator head above concrete pour when starting 

drive motor. This will prevent the vibrator head from 

bouncing on hard surfaces which could damage the 

bearings.

2.  Keep flexshaft (Figure 7) straight as possible when 

operating. Sharp bends increase the load on the core 

and drive motor, which will result in early core failure 

and possible damage to the drive motor.

3.  With the drive motor properly plugged into the correct 

power source, turn the ON/OFF switch to the "ON" 

position.

4.  Completely immerse the vibrator head quickly into 

the concrete mix at a vertical rate of about one foot 

per second (0.3 meters/second). Vibrate concrete for 

about 5 to 15 seconds for wet mixes. For stiff mixes, 

vibrate 2-3 minutes.

5.  Stop vibration of concrete mix when concrete has a 

level, glossy surface and there are no breaking air 

bubbles.

1-1/2 TIMES AREA

OF INFLUENCE

CORRECT

INCORRECT

FLEX-SHAFT

VIBRATOR HEAD

VIBRATOR HEAD

6.  Slowly lift the head out of the mix using an up and 

down movement. This slight up and down movement 

will close the hole formed by the vibrator.

7.  When lifting the head out of the concrete, withdraw 

slowly at a rate of about 3 sec./ft. Using this technique 

will avoid the re-trapping of air.

8.  When near the top of the mix, withdraw the vibrator 

quickly.

9.  Re-insert vibrator into mix according to the "area 

of influence" See Figure 7. Establish a symmetrical 

overlapping pattern for inserting and removing the 

vibrator head.

10.  If concrete is poured in layers, allow vibrator to pass 

within 3 to 6 inches (76 to 152 mm.) into next layer to 

ensure the knitting of the two layers. The complete 

bonding of layers will prevent "lift lines" when forms 

are removed.

do not use vibrator to move concrete laterally. This 

will cause segregation of the concrete. Use a shovel 

or similar device to spread the concrete.