V&P Scientific VP 767-5A Series Specification sheet

V&P Scientific, Inc. 1 Technical Note 083B
Technical Note 083B
CARE AND USE OF 12 CHANNEL DIRECT DRIVE BUBBLE PADDLE RESERVOIR
Motor Control Unit VP 767-5A with VP 758-5 Series Direct Drive Bubble Paddle Reservoirs:
VP 758-5PP, VP 758-5PTFE
Figure 1. The Direct Drive Bubble Paddle Reservoir System is composed of a VP 767-5A Motor
Control Unit and a VP 758-5 series Bubble Paddle Reservoir. VP 767-5A includes
Motor Base, Control, and Power Supply as shown above.
VP 767-5A MOTOR BASE and CONTROL, Single Coupling from Motor to Sealed Bearing Shaft, Black
ABS Enclosure, DC Motor, 120/220 Volts, 50/60 Hz, CE Compliant, Mates to VP 758-5 Series Bubble
Paddle Reservoirs
VP 758-5PP BUBBLE PADDLE RESERVOIR, Sealed Bearing Shaft Powered, 8 or 12 Channel,
Polypropylene Reservoir, Sculpted Bottom, with 1 Bubble Paddle, 13 Bubbles/Paddle, Black Anodized
Aluminum, Mates to VP 767-5A, Mixes 450 mL
VP 758-5PTFE BUBBLE PADDLE RESERVOIR, Sealed Bearing Shaft Powered, 8 or 12 Channel, PTFE
Reservoir, Sculpted Bottom, with 1 Bubble Paddle, 13 Bubbles/Paddle, Black Anodized Aluminum,
Mates to VP 767-5A, Mixes 450 mL
VP 758-5PP
Reservoir
VP 767-5A
Motor Control Unit
Power
Supply
Control
Motor
Base

V&P Scientific, Inc. 2 Technical Note 083B
Figure 2. Parts of the VP 767-5A Motor Control Unit shown unassembled. Compatible with
any of the VP 758-5 series Direct Drive Bubble Paddle Reservoirs listed on previous page.
OPERATION
1) To attach the VP 758-5 series Bubble Paddle Reservoir to the VP 767-5A motor, turn the Sealed
Bearing Coupler so that its spokes align with the slots in the motor coupler on the VP 767-5A
Motor Base. To slip the Sealed Bearing Coupler into the slots on the motor coupler, it helps to lift
slightly up on the end of the reservoir opposite of the Sealed Bearing while also gently pushing
toward the motor. Once the coupler is engaged press down on the lifted end of the reservoir and
it will “snap” into position.
2) If using with an automated liquid handler, place the VP 767-5A motor assembly on the deck using
the robot-specific locating features. Position the pipet tips to be aligned with the notches in the
bubble paddles and the depressions in the VP 758 series Bubble Paddle Reservoir (see Figure 3).
Motor
Base
Power
Cable
Control Unit
VP 758-5PP
Reservoir
Control
Cable
Power
Supply
Cable
Speed
Control
Dial
On/Off
Switch
Bubble
Paddle
Sealed
Bearing
Power
Supply

V&P Scientific, Inc. 3 Technical Note 083B
Figure 3. Close-up view of the12 channel Bubble Paddle Reservoir features.
3) Alternatively, if using a robot that uses a SLAS microplate holder, order the Bubble Paddle
Reservoir system with a VP 581B, a polypropylene SLAS sized adapter. Place the VP 767-5A motor
assembly with the attached VP 581B on the robot deck in a microplate holder (see Figure 4).
Position the robot pipet tips as described above in step 2.
Figure 4. Bubble Paddle Reservoir positioned on a Tecan liquid handler
microplate carrier using two polypropylene SLAS-sized adapters VP 581B and VP 581A.
Tecan
Microplate
Carrier
VP 581B
Adapter
VP 767-5A Motor
Control
VP 581A
Adapter
Paddle
Contours
Pipet Tip Depressions
Paddle
Notches
Drive
Shaft
Sealed
Bearing
Coupler
PTFE Hub
in Notch

V&P Scientific, Inc. 4 Technical Note 083B
4) To remove the VP 758-5 series Reservoir from the VP 767-5A motor, lift slightly up on the end of
the Reservoir opposite to the Sealed Bearing and pull out.
5) The VP 767-5A motor is powered by a DC Motor speed controller. The auto-switchable controller
is powered by 110 or 240 VAC at 60 or 50 Hz.
6) Do not use the speed controller to stop the stirrer. Use the on/off switch.
7) Do not operate dry as this will wear out the seal. Always operate with liquid.
8) Operate at speeds and liquid levels that do not aerosolize the liquid. At lower liquid levels use
slower speeds. The maximum speed is 1,500 RPM and is set at the factory.
9) To lengthen the life of the seal, operate at the lowest possible speed that keeps particles in
suspension. In addition, operate only when needed as this will prolong the life of the seal.
CARE
1) The VP 758 series Bubble Paddle Reservoir can be cleaned with detergents and rinsed with
distilled water and or ethanol/isopropanol. It can also be sterilized by autoclaving if necessary.
These operations should be done while the reservoir unit is assembled (drive shaft and sealed
bearing in place). Do not pull the drive shaft out of the sealed bearings to release the bubble
paddle. This is not recommended because of the risk of damaging the seal. The reservoir can also
be disinfected by soaking in a 10% bleach solution for 5 minutes followed by sterile water rinses
and an additional rinse in alcohol.
2) Replacement sealed bearing units (VP 758-3S, see Figure 5) are available in the event the reservoir
begins to leak. To remove sealed bearing unit from the reservoir, remove the screw at the bottom
of the reservoir and pull out the sealed bearing unit. It is secured in the reservoir by a friction fit
from two O rings. The set screw at the top of the sealed bearing unit should NOT be removed.
3) Clean the bearing hole and apply a thin coat of silicone grease. Hand press a new VP 758-3S into
the reservoir. Line up the slot on the drive shaft with the end of the bubble paddle. Insert and
tighten screw at bottom of reservoir to lock the sealed bearing unit in place. Send the leaky
sealed bearing unit to V&P for repair.
Figure 5. Replacement Sealed Bearing Unit (VP 758-3S)

V&P Scientific, Inc. 5 Technical Note 083B
4) Replacement Bubble Paddles (VP 759AL-R) are also available if necessary. Caution: Doing this
repeatedly, however, is not recommended because of the risk of damaging the seal. If seal is
damaged and reservoir starts to leak, the Sealed Bearing Unit (VP 758-3S) will have to be replaced
(see steps 2 and 3 above).
a) Remove VP 758-5 series Reservoir from the VP 767-5A motor as described in step 4 on page 3.
b) Turn the bubble paddle so that it is in a vertical position. Gently pull the drive shaft partially
out of the sealed bearings to release the bubble paddle (see Figure 6a, next page).
c) Lift up the far end of the bubble paddle (see Figure 6b, next page). Pull bubble paddle out of
the drive shaft slot by pulling away from the sealed bearing.
d) Place the end of the replacement bubble paddle that does not have the Teflon hub into the
drive shaft notch. Gently place the hub end of the paddle into the contoured notch at non-
bearing end of the reservoir. Do not force into place. If necessary, grasp paddle near drive
shaft and move slightly up and down until hub end falls into place
e) Push the drive shaft back into the sealed bearings to lock the bubble paddle into the slot in the
drive shaft (see Figure 6c, next page).
Figure 6(a-c). Replacement of Bubble Paddle (VP 759AL-R), see steps above.
SAFETY PRECAUTIONS
The use of motor controls, like that of all utilization of concentrated power, is potentially hazardous.
The degree of hazard can be greatly reduced by proper design, selection, installation, and use, but all
hazards cannot be completely eliminated.
The following safety precautions must be observed during all phases of installation, operation, service,
and repair of this motor control product. Failure to comply with these precautions or with specific
warnings elsewhere in this manual violates safety standards of design, manufacture and intended use
of the products. V&P Scientific assumes no liability for the customer’s failure to comply with safety
requirements and practices.
6a
6a
6b
6c

V&P Scientific, Inc. 6 Technical Note 083B
WARNING
To avoid personnel injury caused by electrical shock, do not
remove the cover of the controller when the power is ON.
CAUTION
Do not disconnect motor during operation. Otherwise, over-
current breakdown may result.
WARRANTY
V&P Scientific, Inc. warrants this product to be free from defects in material and workmanship when
used under normal laboratory conditions for one year. This warranty begins from the date of delivery
by V&P Scientific.
In the event this product fails under normal laboratory conditions within the specified period of time
because of a defect in material or workmanship, V&P Scientific will, at its option, repair or replace the
product. Damage to the product caused by user negligence is not covered.
Please keep the special shipping carton in case the unit needs to be shipped back to V&P Scientific.
Please contact V&P Scientific at the address below for return authorization and shipping instructions.
This warranty is made in lieu of other warranties expressed or implied including the warranties of
merchantability and fitness for a particular purpose. V&P Scientific shall not be liable for loss or
damages arising from the use of these products nor for consequential damages of any kind.
If technical assistance is required, contact: V&P Scientific, Inc. at 858-455-0643 or [email protected]