Multiquip BP25H_CE - Manual (Page 20)

PAGE 20 — BP-25H CE GASOLINE VIBRATOR — OPERATION MANUAL — REV. #4 (12/19/07)
BP-25H CE GASOLINE VIBRATOR — OPERATION
Figure 17. Area of Influence
with 50% Radial Overlap
X
X
NOTE
DO NOT operate head out of the mix
for more than a few minutes to prevent
overheating. Wet concrete keeps
vibrator head at proper operating
temperature.
Backpack Placement
1. With the engine running at idle speed, place the backpack
on an elevated flat level surface (workbench or tailgate
of a truck). This will enable the operator to place the unit
on his back more easily.
2. The backpack unit attaches very much like a hiker’s
knapsack. Place your arms through the spaces between
the shoulder straps and the frame.
3. Next, bring the abdominal straps to the front and adjust
the straps accordingly. There are two sets of velcro
straps, one set for the chest an another for the waist
area.
Operation
1. Insert the vibrator head into the concrete.
2. Turn the throttle grip (Figure 16) CW to the “RABBIT”
(fast) position for normal operation.
DO NOT attempt to operate the
vibrator until the Safety, General
Information and Inspection sections
of this manual have been
read
thoroughly and understood .
CAUTION - READ MANUAL
If the shaft begins to helix (buckle) excessively during
operation, stop and investigate. This is an indication of an
overload condition.
CAUTION - SHAFT OVERLOAD HAZARD
The vibrator head is cooled by the concrete.
Operation of the vibrator head in air longer than 2
minutes will cause overheating of the bearings which
result in premature head failure.
CAUTION - VIBRATOR HEAD OVERHEATING
Figure 16. Throttle Grip (Rabbit/Fast)
4. Immerse the head for 5 to 10 seconds, (until air stops
rising), and then withdraw it slowly to let the concrete fill
the void left by the vibrator head.
5. The vibrator head should be completely below the surface
when vibrating to keep the head cool.
6. Use the flexible shaft in as straight a position as possible
and DO NOT bend the flexible shaft sharply at any point.
Sharp bends may cause overheating, requiring early
replacement of the flexible shaft.
3. Insert the vibrator head vertically into the concrete and
move it in the pattern shown in Figure 17 to maintain a
consistent area of influence.
THROTTLE
GRIP
CW ROTATION
INCREASES
ENGINE SPEED