Hi-Force Premium TPA-A Series Instruction Manual

Operating Instruction Manual:
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OPERATING INSTRUCTION MANUAL
TPA-A SERIES | AIR DRIVEN TORQUE WRENCH PUMPS
- PREMIUM LINE (ANALOGUE)
Hi-Force TPA series Air Driven Torque Wrench Pumps are premium pumps designed for use with Hi-Force
Hydraulic Torque Wrenches. TPA Pumps can be used to power up to 4 torque wrenches simultaneously
(all operating at the same pressure). Output pressure is fully adjustable and can be set to any value up to
a maximum working pressure of 700 bar (10,000 psi). This manual applies to the Hi-Force TPA series
Analogue Air Driven Torque Wrench Pumps Only. It contains the latest product information available at the
time of publication and approval. For information relating to the servicing of an Air Driven Torque Wrench
Pump, see the servicing instructions, which are available on the Hi-Force website. Hi-Force reserves the
right to make changes to this document at any time without notice.
This ‘Original instructions’ document assumes that the operator carrying out any operation with this
product is trained and competent to do so. This manual does not attempt to cover all details or variations
in the equipment. Nor does thismanual claim to provide for every possible contingency met in connection
with the installation, operation, or maintenance thereof. Should further information be desired, or should
a particular problem arise which is not covered in sufficient detail, the matter should be referred to
Hi-Force.

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Table of Contents
1.0 Inspection upon Receipt .................................................................3
2.0 Safety Precautions...........................................................................3
3.0 Declaration of Incorporation/Conformity......................................6
4.0 Component Identification................................................................7
5.0 Installation/Setup ..........................................................................10
6.0 Operation........................................................................................18
7.0 Maintenance and Storage..............................................................21
8.0 Specifications.................................................................................22
9.0 System Components/Accessories ..............................................22
10.0 Pressure Conversion Table.........................................................23
11.0 Troubleshooting...........................................................................24
12.0 Contact Details ............................................................................26
NOTE: Images contained within this document are for illustrative purposes ONLY.

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1.0 Inspection upon Receipt
Upon receipt of the product, visually inspect the item for any evidence of shipping damage. Please note:
the warranty does not cover shipping damage. Notify the courier immediately if shipping damage is found
and refrain from putting the product into service. The carrier is responsible for repair and replacement costs
resulting from damage that occurred in transit.
2.0 Safety Precautions
2.1 Introduction
Read and follow all the instructions and safety warnings carefully before handling, installation or
use of any hydraulic equipment. Failure to do so could lead to equipment damage, equipment
failure, personal injury or even death. Hi-Force will not be held responsible for any damage to the
equipment, injury or death resulting from the unsafe use of, lack of maintenance to, or incorrect operation
of the product. If in doubt on the correct use of any Hi-Force equipment, contact your nearest Hi-Force office
or distributor. Onlyqualified personnel should be allowed to operate hydraulic equipment. If an operator has
not been trained on high-pressure hydraulic equipment and its safe usage, consult your localHi-Force sales
office or distributor who can offer training courses for operators.
2.2 Work Area Safety
Keep work areas clean and well lit. Cluttered spaces and inadequate lighting can result in
unnecessary accidents.
Keep bystanders clear of any hydraulic tool activity. Personnel working in close-range should be
made aware of all high-pressure work before commencing.
2.3 General Hydraulic System Safety Precautions
Failure to observe and obey the following safety precautions could result
in property damage, significant personal injury or death;
When operating any hydraulic equipment, all operators should ensure that all necessary personal
protective equipment (PPE) is worn, as specified by their employer. Steel toe-cap safety shoes,
safety glasses/visor, ear protection, and protective gloves should be worn at all times. All relevant
risk assessments should be completed before the use of the equipment.
Keep hydraulic equipment away from open flames and direct heat.
NEVER use a coupler as a tool handle, especially if the system is pressurised.
Inspect hoses regularly for damage and wear.
NEVER use hoses that are frayed, kinked, abraded or leaking.

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NEVER handle a pressurised hydraulic hose. Hydraulic fluid escaping under pressure from a
ruptured hose can penetrate the skin and lead to a significant medical emergency, and in some
cases, death. Should this incident occur, seek out medical attention immediately.
Seek medical attention immediately if a hydraulic injection injury (no matter how minor) occurs.
The system operating pressure MUST NOT exceed the pressure rating of the lowest-rated
component in the system.
Good Practice: Use a pressure gauge to monitor the entire system.
Only use hydraulic tools/cylinders in a complete and tested, coupled system. NEVER attempt to
use a tool/cylinder that is not correctly coupled to its operational pump.
NEVER pressurise an unconnected male coupler/s.
NEVER attempt to disconnect a hose from a hydraulic system until the system’s pressure has been
completely released. Doing so can result in that pressure becoming trapped within the system and
relieving trapped pressure can be dangerous.
NEVER try to relieve trapped hydraulic pressure in the system by loosening or attempting to remove
the coupler. Trapped hydraulic pressure can cause a loosened coupler to dislodge unexpectedly
with great force. This action could result in serious personal injury or death.
Loosening a coupler under pressure can result in the escape of hydraulic oil at high pressure, which
can penetrate the skin and cause significant injury or death.
NEVER use a hammer and punch to unseat a coupler check valve that is under pressure. Doing so
could result in the sudden, uncontrolled release of hydraulic oil at high pressure, which could cause
significant injury or death.
NEVER attempt to solve, or clean-up leaks in the system while the system is pressurised.
Immediately replace any worn or damaged parts using genuine Hi-Force parts only.
DO NOT use any hydraulic equipment if you are under the influence of alcohol, drugs or medication.
Lack of attention whilst operating high-pressure hydraulic tools can result in personal injury or death.
Failure to observe and obey the following safety precautions could result
in property damage, equipment damage or minor/moderate personal
injury;
NEVER lift, carry or move any hydraulic components by the hose or hoses connected to them.
Avoid damaging hydraulic hoses. ALWAYS route hoses to ensure that they are free from sharp
bends and kinks. Using a sharply bent or kinked hose will result in severe back-pressure, which can
lead to hose failure.

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NEVER use a coupler/s to lift, carry or position a tool.
Servicing of hydraulic equipment must only be undertaken by a qualified technician.
DO NOT drop or place heavy objects on a hydraulic hose, as this may cause
internal damage, which could result in rupture of the pressurised hose. A
ruptured hose could cause significant damage to components and possible
severe injury to personal operating nearby.
DO NOT let familiarity gained with any hydraulic tools allow you to become complacent.
Complacency with any tooling can result in a lack of discipline toward working guidelines and safety
principles.
DO NOT remove any labels from the product. Replace any damaged or unreadable labels
immediately.
Avoid loose clothing and jewellery that could get caught in moving parts, tie back long hair.
2.4 Hydraulic Pump Specific Safety Precautions
Failure to observe and obey the following safety precautions could result
in property damage, serious personal injury or death;
NEVER exceed the maximum rated pressure of any hydraulic equipment. Hi-Force manufactures
its TPA hydraulic pumps to operate at a maximum working pressure of 700 bar (10,000 psi).
DO NOT connect hydraulic torque equipment with a lower pressure capacity rating to any Hi-Force
pump of this model series.
Make sure all equipment connected to the pump is in good working condition.
NEVER invert the unit or lay it on its side, either in use, in transport or in storage.
DO NOT weld any items to the pump unit or modify it in any way from its delivered condition. Your
warranty may be invalidated, and it could lead to serious personal injury.
ALWAYS ensure there is clear communication between the pump operator and the tool operator.
DO NOT operate the pump unless the tool operator indicates it is safe to do so.
Take extra care when multiple tools are being operated by a single pump. Make sure all tool
operators have given the go-ahead before operating the pump.
NEVER attempt to connect or disconnect a tool/hose/component while the system/pump is under
pressure.
NEVER leave a pressurised system unattended. If you must leave the area, release the pressure
and ensure the hydraulic relief valve on the pump is fully open.
NEVER operate the pump without both hydraulic hoses and a suitable torque wrench connected to
it.

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ALWAYS disconnect the pump from the air supply when carrying out maintenance or adjustments
(except pressure relief valve adjustments)
This pump is NOT ATEX RATED I.e. NOT suitable for work which takes place in explosive
environments.
Failure to observe and obey the following safety precautions could result
in property damage, equipment damage or minor/moderate personal
injury;
ALWAYS stand the pump on a stable, level surface during operation.
BEWARE of hot surfaces on the motor. DO NOT obstruct the flow of cooling air around the motor.
To protect your warranty, only use the hydraulic oil grade specified in Section 5.2.
3.0 Declaration of Incorporation/Conformity
Hi-Force declares that this product has been tested and complies with the standards set out in the relevant
EU directives. The EU Declaration of Incorporation/Conformity is included as Annex A to this instruction
document and is supplied with all shipments of this product.

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4.0 Component Identification
1
Oil Reservoir
5
Oil Pressure Gauge
2
Air Motor
6
Multi-Outlet 4-Way Split-Block *
3
Air Motor Muffler
7
Oil Temperature/Pressure Gauge
4
FRL Unit (See Figure 4.3)
-
*See section 5.4
Figure 4.1: Component Identification

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8
Tool Retract Coupler (90 bar)
12
Control Pendant Inlet
9
Tool Advance Coupler (700 bar)
13
Adjustable Pressure Relief Valve with
Locking Wing Nut
10
Roll Frame
14
Control Pendant
11
Oil Filler/Breather Cap
-
Figure 4.2: Component Identification

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15
Air Lubricator Reservoir
20
Air Supply Inlet (3/8”BSP)
16
Air Pressure Gauge
21
Air Filter Water Trap
17
Air Lubricator Filler Plug
22
Water Trap Drain Button
18
Air Lubricator Control Knob
23
Water Trap Drain Port
19
Air Regulator Control Knob
24
Oil Reservoir Drain Plug
Figure 4.3: Component Identification

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5.0 Installation/Setup
5.1 Before First Use / Preparation
1. Immediately after unpacking, examine the unit for signs of transit damage and if found contact the
shipping company.
2. Establish the oil level in the oil reservoir (1) using the oil level gauge (7). Depending on the shipping
method used, the reservoir may either be supplied full or empty. If the reservoir is empty, it must be
correctly filled before use (See section 5.2). If the reservoir was supplied full of oil, no further action
is required.
IMPORTANT: Running the pump without oil will result in damage.
5.2 Filling the Reservoir with Oil
IMPORTANT: The TPA-A Range uses ISO46 Grade Hydraulic Oil.
Stand the Pump on a firm, level surface.
Remove the filler cap (11) from the filler breather.
Fill the reservoir with clean, high-quality ISO46 hydraulic oil via the filler breather until the oil level
reaches the maximum level on the oil level gauge (7).
Replace the filler cap (11) on the filler breather.
Ensure the oil level does not fall below the minimum level. Running the pump without oil
will result in damage. (See section 7)
IMPORTANT: Only add oil to the reservoir when the attached tool is fully retracted. Failure to do so may
result in the system containing more oil than the reservoir can hold.
NOTE: More hydraulic oil can be added to the reservoir to assist with cooling if required, but not
more than 10mm above the max oil level mark on the gauge (7).

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5.3 Hydraulic Connections
TPA pumps are designed for use with double-acting torque tools (powered in both the
advance and retract directions) and MUST be connected to the tool/s via both, the
advance and retract couplers. DO NOT pressurise the pump/system if there are any
disconnected couplers in the system.
ALWAYS use Hi-Force HTWH hoses to make connections.
Hi-Force TPA Torque Wrench Pumps are fitted with dual flat-face quick-connect couplers.
Make sure both coupler halves are clean before connecting.
If you are NOT using a Hi-Force Torque Wrench with the pump, or if the wrench or
hoses have been modified, make sure that the wrench is connected correctly so that
the male high-pressure advance coupler (9) is connected to the advance port on the
tool. Failure to do so may result in leakage, tool damage or personal injury.
5.3.1 Connections (See figure 5.1)
Connections between couplers are made by simply [1] pressing the male coupler into the female coupler
until [2] the locking collar springs forward and locks the couplers together.
A gentle tug on the hose should be enough to make sure the hose is correctly connected.
5.3.2 Disconnections (See figure 5.2)
Always make sure the pump is switched off and pressure has been fully released before
disconnections are made.
To disconnect couplers; [1-1] twist the locking collar on the female coupler in the direction of arrow and
[1-2] pull back toward the female couplerbody. [2] With the locking collar retracted, pull the male and female
couplers apart. Fit dust caps after disconnections are made.
Figure 5.1: Hydraulic Connections
Figure 5.2: Hydraulic Disconnections

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5.3.3. Connecting a Torque Wrench to the Pump
Connect the female coupler on the red hose to the male advance coupler (9) on the pump.
Connect the male coupler on the black hose to the female retract coupler (8) on the pump.
Connect the free end of the red hose to the advance port on the torque wrench.
Connect the free end of the black hose to the retract port on the torque wrench.
Figure 5.3: Connecting to the Pump
Figure 5.4: Connecting the Torque Wrench

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5.4 Connection of Additional Torque Wrenches
Hi-Force TPA-A Pumps are equipped with additional ports allowing for up to 4 Torque wrenches to be driven
simultaneously (all operating at the same pressure).
This feature can be useful for even tightening of large joints. However, it must be noted that multiple torque
wrenches will operate slower than a single torque wrench would, so this is not necessarily a time-saving
method.
To make use this feature,
Switch off the pump and disconnect from the air supply.
Remove the relevant blanking plugs from the outlet split-block (6) and fit the required number of
extra coupler pairs. ALWAYS fit the male coupler to the top port and the female coupler to the
bottom port to ensure correct torque wrench connection. (See figure 5.5)
NOTE: The ports are ¼” NPT, and a suitable thread sealant or PTFE Tape must be applied to the
coupler threads before they are fitted.
Hi-Force can supply the following torque coupler sets:
TP-CS1: Torque coupler set to convert TPA pump from 1 outlet to 2 outlets.
TP-CS2: Torque coupler set to convert TPA pump from 1 outlet to 3 outlets.
TP-CS3: Torque coupler set to convert TPA pump from 1 outlet to 4 outlets.
Figure 5.5: Split Block Port Pairs

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5.5 Filling the Air Supply Lubricant Reservoir
IMPORTANT: The TPA-A Series Air Motors require ISO VG 32 (SAE10) Detergent Oil.
Turn Off or Disconnect from the Air Supply.
Remove the Air Lubricator Filler Plug (17).
Fill the Air Lubricator Reservoir (15) with ISO VG 32 turbine oil to the fill line marked on the reservoir.
Replace the Air Lubricator Filler Plug (17).
5.6 Air Supply Requirements
The air supply must be delivered via a suitably rated air hose of at least 1/2” (13mm) diameter.
The air supply pressure must be at least 5.5 bar (80 psi), but preferably 7 bar (100 psi).
The compressor must be able to maintain a minimum flow rate of 50 cfm (24 l/sec).
NOTE: The pump will still run if the values are below those stated above, but the oil flow rate, and
therefore the advance and retraction speed of the cylinder, will be reduced.
5.7 Airline Connection
The air supply must be connected (via a suitable fitting) to the 3/8” BSP inlet port (20) on the FRL Unit.
5.8 Air Lubricant Setting
Adjust the air lubricant control knob (18) suchthat 1 dropof lubricant is added to the airsupply approximately
every minute. The lubricant drops can be seen through the lubricant control knob (18) on the top of the unit.
NOTE: Allowing more oil than this into the motor can lead to contamination of the exhaust flow.
5.9 Priming the Pump
The pump is self-priming and will not need to be primed before use.

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5.10 Bleeding Trapped Air from the System & System Leak Test
Torque wrenches and hoses are not always completely filled with oil when new. For safe and efficient
operation, trapped air must be removed from the system. The following procedure must be carried out with
a torque wrench connected to the pump, but NOT fitted on a bolt.
For best performance, perform the below process each time hoses or tools are changed/swapped.
To remove air from the system, proceed as detailed below:
Position the tool below the level of the hydraulic pump (as illustrated).
Connect the pump to an air supply and turn on the air supply. (The motor
will not start until a pendant button is pressed).
Adjust the air regulator control (19) to between 5.5 and 7 bar, as shown on
the air pressure gauge (16).
NOTE: The tool may slowly perform a retracting motion. This is normal but
does not always occur, it will depend on a number of factors.
Ensure the pressure relief valve (13) is fully open (wound anti-clockwise).
Press the ‘Advance’ button on the control pendant (14) once, to turn on the pump. (See figure 5.6)
Press and hold the ‘Advance’button (see figure 5.6) on the control pendant (14). The tool may stay
stationary or advance slowly depending on the relief valve setting.
Set the adjustable relief valve (13) to approx. 100 bar. The tool will advance to its full stroke. If the
tool retracts, then the hoses are connected incorrectly and need to be swapped over at the tool
couplers.
Release the ‘Advance’ button on the control pendant. The tool will automatically retract and the
gauge pressure will build up to between 80 & 90 bar.
Repeat the advance and retract cycle at least 10 times to fully purge the air from the system.
Visually inspect the system for leaks. (Low-Pressure leak test)
With the air motor running the retract hose/s still contains 80-90 bar pressure.
DO NOT TOUCH.
NOTE: When longer hoses are used (greater than 5m), the above procedure may not remove all
the air from the system. In these cases, contact your Hi-Force representative for advice on pre-filling
hoses with hydraulic oil.
Press and hold the ‘Advance’ button again. While doing so, adjust the relief valve by turning the
knob clockwise until the maximum working pressure (700 bar) is reached. The pressure can be
reduced by turning the knob anti-clockwise. The pressure setting can be locked at the desired value
by tightening the wing nut under the adjusting knob clockwise.
Cycle the pump 2-3 times to full pressure making sure both the pump and connected tool/s operate
smoothly through the entire pressure range.

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Visually inspect the system for leaks. (High-Pressure leak & function test)
With the air motor running the retract hose/s still contains 80-90 bar pressure.
DO NOT TOUCH.
Switch off the pump unit by pressing the ‘Stop’ button (see figure 5.6) on the control pendant (14)
and check the tool and connections for any leaks. If leaks are found, these MUST be rectified before
commencing with any torque operation.
Figure 5.6: Control Pendant Buttons

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5.11 System Leak Test & Function Test
NOTE: These tests are performed as part of the process detailed in section 5.10 and need not be repeated
if the full process described in section 5.10 has been performed.
Low-Pressure Leak Test
IMPORTANT: A system leak test should be performed each time a coupler/s is disconnected and new
connections are made. Paying special attention to connection points and new components
introduced to the system. (Hoses, tools etc.)
With all hoses and tools correctly connected to the pump and the pump connected to the air supply, perform
a low-pressure leak test.
Make sure the pressure relief valve (13) is in its fully open position (wound anti-clockwise).
Turn the Pump ‘ON’ by pressing the ‘Advance button’ on the control pendant (14) once.
Press and hold the ‘Advance Button’ on the control pendant. (At this stage the pressure gauge
should read zero and the connected tool should not advance).
While holding the ‘advance button’ in, slowly turn the pressure relief knob clockwise and monitor the
pressure gauge. The pressure will slowly start to build and the torque wrench will begin to advance.
Continue until the gauge reads approximately 100 bar.
With the pressure holding steady around 100 bar, perform a visual inspection of the tool/s, hoses
and couplers for any signs of oil leakage.
DO NOT touch the hoses or couplers while the system is pressurised.
oIf a leak/s is found, depressurise the system completely before attempting to repair, resolve
or inspect a leaking component. DO NOT wipe away excess oil from any component while
the system is still pressurised.
oIf no leaks are found during the leak test it is safe to continue.
High-Pressure Leak Test & Function Test
With the leak test completed and before connecting the tool to a nut/bolt, perform a function test to ensure
the tool and pump operate correctly through their entire pressure range.
A function test should be performed at the beginning of each work shift and should be repeated for every
new tool connected to the pump, during the shift.
While continuing to hold the pump in advance mode, adjust the pressure relief valve (clockwise)
until the pressure gauge reads 700 bar.
Cycle the pump 2-3 times to full pressure making sure both the pump and connected tool/s operate
smoothly through the entire pressure range.
Visually inspect the system for leaks.
If any issues are found during the function test, they must be investigated and resolved before
putting the pump/tool into use.

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6.0 Operation
Hi-Force TPA-A Torque Wrench Pumps are used to power double-acting Hydraulic Torque Wrenches.
Make sure you read this manual in conjunction with the Torque Wrenches operating instruction manual to
ensure correct and safe operation of all hydraulic equipment in the system.
Before applying pressure to the system make sure you observe the following points
You are aware of the correct operation of the Torque Wrench/s.
You are aware of the maximum working pressure of the Torque Wrench/s.
You are aware of the required working pressure/s that must be applied to the Torque Wrench/s.
You have read and fully understood the torquing sequence and procedure.
You have performed the relevant risk assessment/s and have a method statement (safe system of
work) for all operators to follow.
With the air motor still running the retract hose/s still contains 80-90 bar pressure.
DO NOT TOUCH.
6.1. Preparing the Pump for Operation
1. Connect the torque wrench/s to the pump as per section 5.3.
2. Turn the pressure relief valve (13) fully anti-clockwise (fully open position).
3. Connect the Pump to the air supply using an appropriate 3/8” BSP airline fitting.
4. Turn the air supply ‘ON’.
When the air supply is first turned on, it is possible for the pump to start
unexpectedly. If this happens, press the ‘Stop’ button on the control pendant (14)
to stop the motor until ready to proceed.
5. While monitoring the pressure on the air pressure gauge (16), use the air regulator knob (19) to
adjust the air pressure as high as the supply will allow, up to a maximum of 7.0 bar (100 psi). Make
sure that the supplied air pressure is not too high or too low.
NOTE: The regulator knob (19) must be pulled ‘UP’ to unlock it before being turned. Once adjusted
to the desired pressure, it should be pushed back ‘DOWN’ to lock it.
6. If necessary, bleed trapped air from the system as per section 5.10.
7. Perform system leak & function tests as per section 5.11.

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6.2. Setting the Pressure (Torque)
Before setting the pump pressure it is necessary to determine what pump pressure will result in the torque
value required.
Use the tool-specific pressure-torque conversion chart provided with the torque wrench to determine the
pump pressure that corresponds to the required torque value.
The procedure for setting the pump pressure MUST be carried out with the torque tool
attached to the pump but NOT fitted onto a nut or bolt
The procedure for setting the pump pressure is as follows:
1. Loosen the wing nut [1] below the adjustable relief
valve knob and turn the relief valve knob [2]
fully anti-clockwise.
2. Turn the pump ON by pressing the ‘advance
button’once. (See figure 6.2)
3. Press and hold down the ‘advance button’on the
pendant. The tool will advance and stop at its
maximum stroke, this is correct.
4. While holding the pump in advance mode, slowly
turn the relief valve knob [2] clockwise and watch
as the pump pressure on the gauge rises.
When the pressure reaches your desired value,
stop turning theknob and allow the gauge to settle.
5. If the pressure continues to rise above the desired
pressure, release the advance button and back the
pressure off slightly, to below the target pressure,
by turning the knob anti-clockwise.
IMPORTANT: The pressure must ALWAYS be adjusted from a lower pressure up to the target
value, NEVER down from a higher pressure to the target pressure.
6. Re-press the advance button on the pendant and slowly increase the pressure until the desired
pressure is achieved.
7. While holding the pump at the desired pressure, tighten the wing nut against the valve body. This
will lock in the pump pressure at the correct level for the required torque tool output.
8. Release the advance button and allow the tool to retract fully.
9. Cycle the pump one more time to confirm the correct pressure and ensure nothing changed while
fastening the wing nut.
Figure 6.1: Setting the Pressure Relief Valve

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6.3. Pump Operation
All operating functions of the pump are performed via the 2 buttons on the control pendant (14).
(See figure 6.2)
Hi-force recommends that operation of the pump/wrench combination be a minimum 2
person job, one to operate the pump and one to operate the wrench. An additional
operator will be required for each addition wrench connected to the pump.
To reduce the likelihood of a finger/hand trapping accident, at least one of the
operators MUST be trained in the safe usage of the equipment and a clear system of
communication MUST be established.
To ensure the safety of the torque tool operator/s, the pump MUST ONLY be operated
once all torque wrench/tool operators have indicated it is safe to do so.
1. Prepare the pump for operation as per section 6.1.
2. Set the required pressure (torque) as per section 6.2.
3. Using the remote ‘control pendant’(14), press the ‘Advance’ button once to start the pump.
(See figure 6.2)
4. Press and hold the ‘Advance’ button to advance the tool. (See torque wrench operating instructions
for more details about the wrench operation)
5. When the wrench stops advancing, release the ‘Advance’ button. The tool will automatically retract
ready for the next operation.
6. Turn the pump off by pressing the ‘Stop’ button on the control pendant. (See figure 6.2)
Good Practice: Set the relief valve (13) to the fully open position (wound anti-clockwise) after use.
7. Turn off the air supply and then disconnect the air supply hose.
Figure 6.2: Control Pendant Operation