OfiTE 120-60 User manual

Model 20 Constant Speed Blender
120-60: For Cement, 115 Volt
120-60-1: For Cement, 230 Volt
120-60-F: For Fracturing Fluids, 115 Volt
120-60-1-F: For Fracturing Fluids, 230 Volt
Instruction Manual
Updated 11/16/2015
Ver. 5.0
OFI Testing Equipment, Inc.
11302 Steeplecrest Dr. · Houston, Texas · 77065 · U.S.A.
Tele: 832.320.7300 · Fax: [phone] · www.ote.com
©Copyright OFITE 2015

OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: [phone] / Fax: [phone] / www.ote.com 1
Intro..................................................................................................2
Description......................................................................................2
Specications .................................................................................3
Components ...................................................................................3
Installation.......................................................................................7
Operation.........................................................................................8
Manual Mode ..............................................................................8
Variable Mode .............................................................................9
Auto Mode...................................................................................9
Timer .........................................................................................10
Speed Controller .......................................................................10
PID Parameters ........................................................................ 11
Warranty and Return Policy ........................................................12
Table of
Contents

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OFITE’s Model 20 Constant Speed Blender was designed to prepare well
cements for testing according to the guidelines stated within API Specication
10. Research has demonstrated that the properties of well cements are
highly dependent upon mixing procedures. In addition, studies have indicated
that when constant speed blenders/mixers are used, data obtained from
thickening time tests has greater reproducibility and generally correlates
better with data obtained from other laboratories. The Model 20 was designed
to provide a means of consistently preparing cement slurries for testing
purposes and can be utilized to mix cements according to the procedures
stated by the API.
The proper amount of mix water is carefully weighed and poured into the
mixing container of the blender. The rotational speed is set to 4,000 RPM
and allowed to stabilize at this speed. The “TIMER” switch is pressed and
the cement is immediately added to the mix water. The cement should be
uniformly added to the water in less than 15 seconds. After 15 seconds the
rotational speed is automatically increased to 12,000 RPM and the slurry is
mixed an additional 35 seconds. A microprocessor is utilized to maintain the
rotational speed within the recommendations established by the API and is
independent of uctuations in line voltage and the viscosity of the cement
slurry.
The 120-60-F Constant Speed Blender is intended for testing Fracturing
Fluids. The rotational speeds are set to 500 and 1,000 RPM respectively.
Intro
Description

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Components #122-074 Fuse, 4 Amp, 5 mm × 20 mm (230 Volt Only)
#122-074-1 Fuse, 5 Amp, 5 mm × 20 mm (230 Volt Only)
#122-075 Fuse, 7 Amp, 5 mm × 20 mm (115 Volt Only)
#122-077 Fuse, 10 Amp, 5 mm × 20 mm (115 Volt Only)
#122-200 Hardened Blade Assemblies
#122-202 Container, Stainless Steel
#122-203 Container Lid
#122-204 Bottom Gasket
#122-209 Waring Blender®230 V with Exciter Gear and Pickup Cable
#122-210 Waring Blender®115 V with Exciter Gear and Pickup Cable
#152-34 Container, Glass (For Fracturing Fluids)
#164-42 Male Connector for Power Cable (230 Volt Only)
Optional:
#120-61 Spare Parts Kit, 115 Volt
#122-075 Fuse, 7 Amp, 5 mm × 20 mm (115 Volt Only), Qty: 4
#122-077 Fuse, 10 Amp, 5 mm × 20 mm (115 Volt Only), Qty: 4
#122-200 Blending Assembly / Square Drive, 1 qt., Qty: 12
#122-202 Stainless Steel Container, 1 qt.
#122-203 Container Lid, 1 qt.
#122-204 Bottom Gasket, Qty: 6
#120-61-1 Spare Parts Kit, 230 Volt
#122-074 Fuse, 4 Amp, 5 mm × 20 mm, Qty: 4
#122-074-1 Fuse, 5 Amp, 5 mm × 20 mm, Qty: 4
#122-200 Blending Assembly / Square Drive, 1 qt., Qty: 12
#122-202 Stainless Steel Container, 1 qt.
#122-203 Container Lid, 1 qt.
#122-204 Bottom Gasket, Qty: 6
- Hardened stainless steel mixing blades
- Stainless steel 1-liter mixing container
- Two preset mixing speeds and variable speed
- Maximum Speed for Cement Testing (120-60 / 120-60-1): 16,000 RPM
- Maximum Speed for Fracturing Fluid Testing (120-60-F / 120-60-1-F):
5,000 RPM
- Rotational speed is maintained at setpoint with microprocessor
- Timing relays automatically control mixing times at required RPM
- Digital instrumentation provides excellent readability
- Crated Size: 45" × 32" × 12" (114 × 81 × 31 cm)
- Crated Weight: Approximately 75 pounds (34.1 kg)
Specications

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1. Rotational Speed Display (RPM)
This display shows the speed of the blade. On models for cement
testing (120-60 / 120-60-1), multiply the value displayed here by 10
to determine the actual RPM of the blade.
2. Timer Display (Seconds)
3. Edit Setpoint 1 / Increase Setpoint Digit
Press this button to change the timer value of Setpoint 1. When
editing a setpoint value, this button increases the rst digit of the
value by 1.

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4. Edit Setpoint 2 / Increase Setpoint Digit
Press this button to change the timer value of Setpoint 2. When
editing a setpoint value, this button increases the second digit of
the value by 1.
5. Increase Setpoint Digit
This button increases the fourth digit of the setpoint value by 1.
6. Increase Setpoint Digit
This button increases the third digit of the setpoint value by 1.
7. Enter Button
Press this button to store the Setpoint value in memory.
8. Timer Reset
Press this button to reset the timer to zero.
9. Keypad: VAR
This button accesses the PID Parameter Control Menu.
10.Keypad: SETPT
Press this button to change the rotational speed of Setpoint 1 or
Setpoint 2.
11. Keypad: ENTER
Press this button to store the Setpoint value in memory.
12.Two-Way Switch: ON - OFF
This switch provides power to the unit.
13.Two-Way Switch: MAN/AUTO - Variable
This switch determines the operating mode of the unit. If it is set to
MAN/AUTO, the MAN - AUTO switch (15) becomes active. If it is
set to VARIABLE, the unit will be in Variable Mode.

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14.Three-Way Switch: ST PT 1 / ST PT 2
This switch remains inactive unless the MAN/AUTO - Variable
switch (13) is set to MAN/AUTO and the MAN - AUTO switch (15)
is set to MAN. It toggles the rotational speed between Setpoint 1
and Setpoint 2. If it is in the center position, the unit will not rotate.
For testing Cement (part numbers 120-60 and 120-60-1), Setpoint 1
is 4,000 RPM and Setpoint 2 is 12,000 RPM. For testing Fracturing
Fluids, Setpoint 1 is 500 and Setpoint 2 is 1,000 RPM.
15.Three-Way Switch: MAN - AUTO
This switch remains inactive unless the MAN/AUTO - Variable
switch (13) is set to MAN/AUTO. It toggles the operating mode
between Manual Mode and Auto Mode. If it is in the center position,
the unit will not rotate.
16.Potentiometer
This knob remains inactive unless the MAN/AUTO - Variable
switch (13) is set to Variable. It provides greater control over the
rotational speed of the unit.

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Installation 1. Carefully remove the unit from the packing box and place it on a counter
safely away from sinks and other possible hazards.
2. Place the blending assembly on the base of the unit.
3. Plug the power supply cord into the port underneath the cabinet housing
labeled “BLENDER”.
4. Plug the transducer cable into the center port and fasten in place with the
two clamps and screws provided. Do not over tighten.
5. Finally, plug the power supply cord into a suitable AC power supply.

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Operation The blending assembly has two speeds, “HI” and “LO”. The Constant Speed
Blender will not operate unless the blending assembly is set to “HI”. Before
operation, press the “HI” button on the blending assembly.
The unit has three operating modes: Manual, Variable, and Auto. The MAN/
AUTO - Variable switch (13) and the MAN/AUTO switch (15) set the mode.
1. To set the unit to Manual Mode, set the MAN/AUTO - Variable switch (13)
to MAN/AUTO and the MAN - AUTO switch (15) to MAN.
2. To set the unit to Auto Mode, set the MAN/AUTO - Variable switch (13) to
MAN/AUTO and the MAN - AUTO switch (15) to AUTO.
3. To set the unit to Variable Mode, set the MAN/AUTO - Variable switch
(13) to Variable.
Before turning the unit on, be sure to set the MAN/AUTO switch (15)
and the ST PT 1 / ST PT 2 switch (14) to the center position and turn
the Potentiometer (16) fully counter-clockwise.
1. Place the mix water into the mixing cup and place the lid on top of the
container.
2. The MAN/AUTO - Variable switch (13) should be in the MAN/AUTO
position. The MAN/AUTO switch (15) should be in the MAN position.
3. Place the ST PT 1 / ST PT 2 switch (14) to the ST PT 1 position to start
the unit.
When you initially start the unit, the rotational speed may exceed the
setpoint, but will stabilize within a few seconds.
4. After stabilization, you have 15 seconds to add the cement to the mix
water and cover the container with the lid. Reset the timer to zero by
pressing the Reset Button (8).
5. After 15 seconds, increase the rotational speed by setting the ST PT 1 /
ST PT 2 switch (14) to ST PT 2.
6. After mixing the cement an additional 35 seconds, stop the blender by
setting the ST PT 1 / ST PT 2 switch (14) to the center position.
7. Return the MAN/AUTO switch (15) to the center position.
8. After mixing is complete, clean the blending cup and lid as soon as
possible to prevent any cement from building up on the container.
Operation
Manual Mode

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Operation
Variable Mode
1. Place the mix water into the mixing cup and place the lid on top of the
container. Ensure that the potentiometer control knob is in the fully
counter-clockwise position.
2. Make certain that the ST PT 1 / ST PT 2 switch (14) is in the center
position. Place the MAN/AUTO - VARIABLE (13) switch in the Variable
position.
3. Increase the rotational speed of the blender by turning the control
Potentiometer (16) clockwise.
4. Reset the timer to zero by pressing the reset button (8).
5. After mixing is complete, clean the blending cup and lid as soon as
possible to prevent any cement from building up on the container.
1. Place the mix water into the mixing cup and place the lid on top of the
container.
2. Make certain that the ST PT 1 / ST PT 2 switch (14) is in the center
position. Place the MAN/AUTO - VARIABLE switch (13) to the MAN/
AUTO position. Place the MANUAL/AUTO switch (15) switch to the
AUTO position.
Once the switch is placed into the AUTO position, the blender
should start to accelerate. If the blender does not accelerate, reset
the timer by pressing the reset button (8).
When you initially start the unit, the rotational speed may exceed the
setpoint, but will stabilize within a few seconds.
3. After stabilization, reset the timer to zero again and immediately begin
adding the cement. You have 15 seconds to add the cement to the mix
water and place the lid on the container.
After 15 seconds the timer will automatically increase the rotational
speed to Setpoint 2. Ensure that the cement is added to the mix
water and that the lid is placed on the container in less than 15
seconds.
4. After mixing the cement at Setpoint 2 for 35 seconds the timer will
automatically stop the blender.
5. After mixing is complete, clean the blending cup and lid as soon as
possible to prevent any cement from building up on the container.
Operation
Auto Mode