Delta Regis CESL8 Series User manual

32V and 40VDC CESL8 and CESL9 Series Brushless
Screwdrivers and Controllers - Operation Manual
DELTA REGIS
Tools Inc.
CAUTION - Please read, understand, and follow all operating and safety instructions in this manual before using
the tools and controllers.
The CESL8 and CESL9 Series Brushless tools are designed for exclusive use with specic Delta Regis controllers
as dened in this manual. Do not attempt to use the tools and/or controllers with any products other than as
specied in this manual.
If you have any questions or concerns,
please contact us at:
Delta Regis Tools, Inc.
7370 Commercial Circle
Fort Pierce, FL USA 34951
Ph [phone]
Fx [phone]
E-mail: [e-mail]
Doc. CESL8_Manual_R2
Copyright © 2023 Delta Regis Tools, Inc
Applies to the following Delta Regis products:
32VDC Screwdriver Models: CESL810(S)/811/812(P/S)(-ESD),
CESL823/824(F/P/PF/S)(-ESD), CESL827B(P)(-ESD)
40VDC Screwdriver Models: CESL828/829(F/P/PF/S)(-ESD),
CESLT835M/845M/855M/865M/875M/885M/895M(PM)(-ESD)(-SQ)
CESP835/845/855/865(-SQ)(-U),
CESLT935(F/P/PF)(-ESD)(-SQ), CESLT945/955(P)(-ESD)(-SQ)
32VDC Controller Models: BECT620C/820
40VDC Controller Models: BECT640HL/940HL

1. Please read and understand the operation manual and follow all safety and operation instructions.
2. Use these products in a suitable dry, indoor location. Do not use the tools and controllers in damp, wet or high
temperature environments. Do not use in the presence of ammable liquids or gases.
3. Ensure that the controller has proper ventilation. Do not expose the tools and controllers to areas subject to airborne
contaminants (eg. dust, metal lings).
4. Use only a properly grounded electrical outlet of the correct supply voltage to power the screwdriver controller.
5. Ensure that the supply outlet is overload protected and of sucient amperage capacity.
6. Use only the correct plug for the controller and outlet. Hold the plug of the power cord when connecting or
disconnecting. Do not pull on the cable.
7. Do not expose the cable, tool or controller to oil, chemicals, or heat. Ensure that the cable is routed and used in such a
manner as to not be subject to sharp objects that may abrade or cut the cable.
8. Locate the controller in a suitable, safe location on a steady surface. Do not place in a high location where there may
be a risk of it falling. Secure the controller in position to prevent possible movement caused by pulling on the power
or tool cables.
9. Do not cover the controller or stack any objects on top of or near the controller. Ensure that adequate clearance and
ventilation is provided around the perimeter of the controller.
10. Specic models of Delta Regis BECT series controller are designated for use with CESL8 and CESL9 series screwdrivers
as specied on the following pages. Use of the controller (or screwdriver) with any other screwdriver (or controller)
may result in malfunction, damage, or injury.
11. In the event that the controller is overloaded beyond the maximum current rating, an internal fuse will disrupt
power. Should the controller stop functioning, or exhibit abnormal or intermittent operation, please discontinue use
immediately and send the controller to an authorized service centre for troubleshooting and repair.
12. Excessive duty cycle will cause the tool and/or controller to overheat. If this occurs, discontinue use until cooled down
and reduce cycle rate. As a general rule, do not exceed 10-15 screws/minute, one 8 hour shift per day.
13. The CESL8 and CESL9 series screwdrivers incorporate a protection circuit which stops the electric screwdriver if the
tool is switched from forward to reverse while running. Should this happen, the operator must release the tool trigger
and restart the fastening cycle.
14. Power the controller o and wait for 3 seconds before connecting/disconnecting the screwdriver tool cable to/from
the controller.
15. Turn the main power switch o when the controller is not being used. Unplug the controller if it is not being used on a
regular basis.
16. Do not attempt to disassemble or repair the screwdriver or controller. Repairs should only be performed by qualied
technicians properly trained in the safe operation, troubleshooting, and repair of these devices. Please consult Delta
Regis for the location of the nearest service depot.
17. Use only the factory specied Delta Regis brand replacement parts and accessories with these tools and controllers.
18. Any damage to the tool and/or controller resulting from misuse, abuse, or failure to follow these guidelines will void
the limited product warranty.
19. Do not dispose of electrical appliances as unsorted municipal waste, use separate collection systems available. If
electrical appliances are disposed of in landlls or dumps, hazardous substances can leak into the groundwater and
get into the food chain, damaging your health and well-being. When replacing old appliance with new, the seller is
legally obligated to take back your old appliance for disposal free of charge.
CESL8/9 Series
Operation Manual
DELTA REGIS
Tools Inc.
www.deltaregis.com
Important - Installation and Safety
Warning - Failure to understand and follow proper installation guidelines, safety requirements, and
operating instructions may result in malfunction, component damage, property damage, shock hazard,
re hazard, injury or death.
Page 2

CESL8/9 Series
Operation Manual
DELTA REGIS
Tools Inc.
www.deltaregis.com
Grounding - This controller (and AC power cord) is equipped with a 3-prong electrical receptacle/plug with ground
pin. The controller must be connected to a properly grounded AC electrical outlet. Do not attempt to use this
controller without a properly functioning ground connection. Never connect a live circuit to the ground pin or
internal yellow-green ground wire.
20. We emphasize that the power supply should be placed on a at surface and secured. The power supply label/
specications are located on the bottom of the most models. Place on a at surface and use a M4 x 20mm
screw to align the anchor hole and secure it to the at surface.

CESL8/9 Series
Operation Manual
DELTA REGIS
Tools Inc.
www.deltaregis.com
www.deltaregis.com
Setting up your screwdriver and controller
Page 4
Unpack the tool and controller from their boxes and conrm that all items have been received and are in good
condition. The controller is shipped with the appropriate grounded power cord for connection to the AC supply
receptacle. The screwdriver is shipped with a 2 meter tool cable that connects the screwdriver to the controller.
CESLT8..M/PM, CESLT9 and CESP8 pistol housing tools also include an accessory side handle.
Select a suitable, stable location for the controller. Ensure that the location allows for the required range of motion
of the screwdriver without stressing the tool cable that connects the tool to the controller. The cable should bend
naturally and always have some play in it. Undue stress put on the cable will result in premature cable failure. If the
standard cable length is unsuitable, longer lengths are available for purchase as an option.
If the tool is being mounted in a xture or torque arm, mount the tool in the arm. ‘M’ series tools incorporate an
aluminum mounting surface directly in front of the tool grip/housing nut. Please use this surface for xturing.
Fasten the tool securely to avoid it rotating in the xture due to reaction torque. An optional metal torque lock
sleeve is available for some models to aid in mounting in a torque arm.
We recommend that all higher torque CESL8/9 screwdrivers be mounted in a torque arm to isolate the operator
from the reaction torque generated by tools in this torque range. If it is necessary to use a CESLT8..M or CESLT9
series in-line tool without a reaction arm, the accessory side handle must be installed and used by the operator to
react torque.
Accessory Side Handle
included with models
CESLT8..M/PM and CESP8..
Always install and use for
handheld applications
to react torque.
The CESLT8..M/PM and CESP8..
screwdriver housings include
a groove for installation of the
side handle. Ensure that the
notch in the handle is aligned
properly with the groove and
fasten securely.
Aluminum surface
for xture mounting
Ensure that the controller’s power switch is in the ‘o’ position. Connect the 6-pin tool cable to the screwdriver.
The cable has a spring guard at one end for added protection and durability. Plug this end of the cable into the
tool. The connector is designed to be a tight t - seat the connector rmly into the receptacle and tighten the nut
securely by hand. Attach the other end of the cable to the controller in the same manner. Plug the supplied power
cord from the controller into a suitable, properly grounded AC receptacle.
Screwdriver end of cable
includes spring guard for
added durability
Push cable connector rmly into receptacle and
secure retaining nut hand-tight. Do not overtighten.
32VDC 6-pin CESL8
Series Tool Connector
40VDC 6-pin CESL8/9
Series Tool Connector
Always turn o controller power and wait 3 seconds before connecting or disconnecting the screwdriver cable.
Do not connect/disconnect the screwdriver with the power supply turned on.

CESL8/9 Series
Operation Manual
DELTA REGIS
Tools Inc.
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www.deltaregis.com Page 5
600 Series600 Series
Insert the desired screwdriver bit into the quick change holder of the driver. For tools with
1/4” hex bit holders, insert the desired driver bit by pushing (or pulling, depending on
the model) the outer sleeve of the bit holder to release the retainer. Insert an appropriate
power bit, release the sleeve and ensure that the bit is properly locked in place by pulling
back and forth on the bit.
Make sure that the tool’s start mechanism (lever, trigger, or push-start) is not engaged to
prevent the tool from accidentally starting when turning on the controller’s power switch.
Turn the controller’s main power switch on. Select the desired speed (Hi/Lo) of the
screwdriver via the speed switch on the controller.
Before you turn on the controller
Depending on the model of screwdriver selected, the screwdriver will have either a start lever,
a push-to-start mechanism (models with ‘P’ sux), or a trigger start (pistol grip models). All
models also have a forward/reverse switch.
Grip the screwdriver so that the index nger is comfortably over the trigger mechanism and
the thumb can be used to change the position of the fwd/rev switch if required. Hold securely
to prevent the screwdriver from rotating in your hand during use.
If the tool has a side handle installed, grasp the side handle rmly with the other hand. Due to
the torque output capabilities of some models, it is extremely important to use the supplied
side handle in all handheld applications and to grip the tool rmly to react the torque.
Familiarize yourself with the operation of the tool by free running the tool before use at higher
torque values.
Align the driver bit properly with the head of the fastener. Keeping the driver in-line with the
fastener, activate and hold the start mechanism (lever, trigger or push). The screwdriver will
install the fastener (FWD). When the preset torque is reached, the clutch will activate and the
tool will shut o. Once the tool shuts o, release the start mechanism to reset. To stop the
screwdriver before fastening is complete, release the start mechanism.
To remove a fastener, change the FWD/REV switch to the REV position. Press the start
mechanism to run the driver in reverse (CCW). Do not switch from forward to reverse (or
reverse to forward) while the motor is running. A protection circuit will stop the tool if it is
inadvertently switched while running - if this happens, the trigger must be released and re-
activated to continue operating.
Operating the screwdriver
An external torque adjustment nut located at the nose of the screwdriver is used to set
the output torque of the screwdriver. A reference scale (0-8) is available as a guide -
this scale is for reference only and does not indicate actual torque values. Rotate the
torque nut clockwise to increase torque output, ccw to decrease torque output. Make
the torque adjustment through a series of gradual increases, starting below the desired
torque level. We recommend the use of an appropriate torque tester and static joint
testing after installation to verify proper torque settings.
Once the torque is set, remove the housing nut and cover the torque adjustment nut
with the included torque lock sleeve (CESL810-829, CESLT8_M, CESPT8 models). This will
help avoid accidental torque adjustments.
The torque output of the screwdriver should be veried on a regular basis. Frequency
of verication will depend on the customer’s specic application and quality control
requirements. During the initial screwdriver break-in period, output torque may decay
somewhat as the mechanical components wear in.
Setting the torque

CESL8/9 Series
Operation Manual
DELTA REGIS
Tools Inc.
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www.deltaregis.com Page 6
Model No.
w/ESD Housing
Model No.
without ESD
Start
Type
Range
(In.Lbs)
Range
(Nm)
Speed
(RPM) Hi
Speed
(RPM) Lo
Driver
Bit Type
Length
(mm)
Diameter
(mm)
Weight
(g)
CESL810-ESD (2) -
Lever
0.2 - 3.1 0.02 - 0.35 1000 700
1/4” hex 185 32 385
CESL810S-ESD (2) -0.2 - 3.1 0.02 - 0.35 500 350
CESL811-ESD (2) -0.4 - 6.2 0.05 - 0.69 1000 700
CESL812-ESD (2) -0.9 - 8.7 0.10 - 0.98 1000 700
CESL812S-ESD (2) -0.9 - 8.7 0.10 - 0.98 280 250
CESL812P-ESD (2) -Push 1.8 - 8.7 0.20 - 0.98 1000 700 230 30 310
CESL823-ESD CESL823
Lever
1.3 - 10.5 0.15 - 1.18 1000 700
1/4” hex 245 36 520
CESL823F-ESD (1) CESL823F (1) 1.3 - 10.5 0.15 - 1.18 2000 -
CESL824-ESD CESL824 2.6 - 16.5 0.29 - 1.86 1000 700
CESL824F-ESD (1) CESL824F (1) 2.6 - 14.7 0.29 - 1.67 2000 -
CESL823P-ESD CESL823P
Push
1.3 - 10.5 0.15 - 1.18 1000 700
CESL823PF-ESD (1) CESL823PF (1) 1.3 - 10.5 0.15 - 1.18 2000 -
CESL824P-ESD CESL824P 2.6 - 16.5 0.29 - 1.86 1000 700
CESL824PF-ESD (1) CESL824PF (1) 2.6 - 14.7 0.29 - 1.67 2000 -
CESL827B-ESD (1) -Lever 8.7 - 26.0 0.98 - 2.94 1200 900 1/4” hex 278 39.5 800
CESL827BP-ESD (1) -Push 8.7 - 26.0 0.98 - 2.94 1200 900
(1) Use controller model BECT820 or BECT832-SSO with these screwdrivers.
(2) Driver available with optional 4mm round (winged bit) bit holder. Add sux ‘-4mm’ to model number.
Model Numbers and Specifications - 32VDC CESL8 Screwdrivers
Torque Adjusting Nut
Turn CW to increase torque setting, CCW to decrease
torque output. Higher values on scale indicate a
higher torque setting.
Please note - Numbers (1-8) on the scale are for reference
only and are not actual torque values.
Bit Holder
Retract sleeve to
insert/remove bits.
Once the bit is
inserted, release
the sleeve and pull
back and forth on
the bit to verify
proper retention.
Housing Nut
Remove the housing nut to
install a torque locking sleeve.
The lock sleeve covers the torque
adjusting nut to deter unintentional
changes to the adjustment.
Start Lever
Press to start the
screwdriver and hold
until the driver shuts
o (CW tightening).
Tool Cable Connection
Align the pins of the cable
with the socket and push
the cable’s connector
rmly into place. Carefully
hand tighten the securing
ring - do not overtighten.
FWD/REV Switch
Select the desired direction of
rotation for the screwdriver -
FWD (CW) or REV (CCW).
Some models also have an OFF
position.
Suspension Bail
Use the bail to hang
the screwdriver from a
tool balancer.

CESL8/9 Series
Operation Manual
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Tools Inc.
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Model Numbers and Specifications - 40VDC CESL8 Screwdrivers
www.deltaregis.com
Model Number Start Type Range (In.Lbs) Range (Nm) Speed (RPM) Drive Type
Inline Body Style, Handheld (1)
CESL828 (2) Lever 8.9 - 26.0 0.98 - 2.94 1000 / 750 1/4” hex
CESL828F Lever 8.9 - 26.0 0.98 - 2.94 2000 / 1400 1/4” hex
CESL828P (2) Push 8.9 - 26.0 0.98 - 2.94 1000 / 750 1/4” hex
CESL828PF Push 8.9 - 26.0 0.98 - 2.94 2000 / 1400 1/4” hex
CESL829 (2) Lever 17.4 - 43.4 1.96 - 4.90 1000 / 750 1/4” hex
CESL829P Push 17.4 - 43.4 1.96 - 4.90 1000 / 750 1/4” hex
Dimensions (mm): 278(L) x 39.5(dia) Weight: 0.8 kg
(1) ESD Safe housing available - add sux‘-ESD’ (2) 350 RPM version available - add sux‘S’
Model Number (2) Start Type Range (In.Lbs) Range (Nm) Speed (RPM) Drive Type
Pistol Grip Body Style
CESP835 Trigger 18 - 53 2 - 6 1000 / 750 1/4” hex
CESP835-SQ Trigger 18 - 53 2 - 6 1000 / 750 3/8” square
CESP845 Trigger 27 - 79 3 - 9 800 / 600 1/4” hex
CESP845-SQ Trigger 27 - 79 3 - 9 800 / 600 3/8” square
CESP855 Trigger 36 - 106 4 - 12 550 / 400 1/4” hex
CESP855-SQ Trigger 36 - 106 4 - 12 550 / 400 3/8” square
CESP865 Trigger 53 - 159 6 - 18 350 / 250 1/4” hex
CESP865-SQ Trigger 53 - 159 6 - 18 350 / 250 3/8” square
Dimensions (mm): 270(L) x 169(H) x 48(dia) Weight: 1.2 kg
(2) Pistol Grip tool has cable connection in bottom of handle as standard. For top rear connection, add sux ‘U’ to model number.
(1) ESD Safe housing available - add sux‘-ESD’ (4) Standard bit holder is 1/4”hex quick change type. For optional 3/8”square drive, add sux ‘-SQ’
Model Number Start Type Range (In.Lbs) Range (Nm) Speed (RPM) Drive Type
Inline Body Style, Handheld or Fixture Mount (1)
CESL835M Lever 18 - 53 2 - 6 1000
1/4” hex (4)
CESL835PM Push
CESL845M Lever 27 - 79 3 - 9 800
CESL845PM Push
CESL855M Lever 36 - 106 4 - 12 550
CESL855PM Push
CESL865M Lever 53 - 159 6 - 18 350
CESL865PM Push
CESLT875M Lever 71 - 221 8 - 25 350
CESLT875PM Push
CESLT885M Lever 106 - 310 12 - 35 350
3/8” sq.dr
CESLT885PM Push
CESLT895M Lever 177 - 443 20 - 50 200
CESLT895PM Push
Dimensions (mm): 297(L) x 46.2(dia) Weight: 1.25 kg
Page 7
TOP CONNECTION
ADD SUFFIX ‘-U’
ALL CESP8 AND CESLT8_M MODELS INCLUDE
AN ACCESSORY SIDE HANDLE ATTACHMENT
3/8” SQUARE DRIVE
ADD SUFFIX ‘-SQ’

CESL8/9 Series
Operation Manual
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Power Supply/Controller Specifications
DELTA REGIS
Tools Inc.
Page 8
The BECT620C and BECT820 32VDC Controllers are specically for use with
CESL810-827B Brushless Tools. One controller (order separately) is required per
driver. CE/RoHS/ETL Approved.
Model BECT832-SSO is an optional count/verify controller for the 32VDC CESL8
series screwdrivers. Please refer to the separate BECT832-SSO Manual for further
details and functionality.
Controllers for 32VDC Brushless CESL8 Drivers
Model
Number (1)(2)
Output
Connector Speeds Output Input
Dimensions
L x W x H (mm)
Weight
(kg) Use with tool models(2)
BECT620C
1 (6 pin) Hi/Lo 32/24 VDC 100-240 VAC
145 x 60 x 35 0.25 CESL810-812(P/S), 823(P), 824(P)
BECT820 195 x 76 x 56 0.45 CESL823F(PF), 824F(PF), 827B(P)
BECT832-SSO 200 x 130 x 100 1.6 All 32VDC CESL8 Models
(1) Part number with North American cordset. For EU cord, add sux ‘E’ , UK cord add sux‘UK’.
(2) Controller BECT820 and BECT832-SSO can be used with all models of 32VDC CESL8 screwdriver.
BECT820
CONTROLLER
(1) ESD Safe housing available - add sux‘-ESD’
(4) Standard bit holder is 1/4”hex quick change type.
For optional 3/8” square drive, add sux ‘-SQ’
Model Number
Start
Type
Range
(In.Lbs)
Range
(Nm) Speed (RPM)
Drive
Type
Inline Body Style, Handheld or Fixture Mount (1)
CESLT935 Lever 18 - 53 2 - 6 1000 / 750
1/4” hex (4)
CESLT935F Lever 18 - 53 2 - 6 2200
CESLT935P Push 18 - 53 2 - 6 1000 / 750
CESLT935PF Push 18 - 53 2 - 6 2200
CESLT945 Lever 27 - 79 3 - 9 1000 / 750
CESLT945P Push 27 - 79 3 - 9 1000 / 750
CESLT955 Lever 53 - 106 6 - 12 880 / 660
CESLT955P Push 53 - 106 6 - 12 880 / 660
Dimensions (mm): 330(L) x 41.6(dia) Weight: 1.1 kg
3/8” SQUARE DRIVE
ADD SUFFIX ‘-SQ’
METAL HOUSING THREAD (M35 x 1.0) FOR
FIXTURE MOUNT APPLICATIONS
ACCESSORY SIDE
HANDLE ATTACHMENT
AND SUSPENSION BAIL
INCLUDED
Model Numbers and Specifications - 40VDC CESL9 Screwdrivers
Fixture Mounting
The CESLT9 Series screwdriver has a
threaded metal housing to facilitate
xture mounting. Remove the housing
nut to expose the M35 x 1.0 thread.

CESL8/9 Series
Operation Manual
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Tools Inc.
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CESL8/9 Series
Operation Manual
DELTA REGIS
Tools Inc.
www.deltaregis.com Page 9
The CESL8 and CESLT9 Series Tools and Controllers are warranted for one year from the date of purchase against defects
in material and workmanship. In addition, the brushless motor in the CESL8/9 Series Screwdrivers is warranted for three
years from the date of purchase against defects in material and workmanship. This warranty does not cover damage due to
transportation, abuse, misuse, or improper service. Our sole remedy is to repair or replace (at our discretion) any unit found
to be defective due to defects in material or workmanship. It is the responsibility of the user to return any product thought
to be defective, freight prepaid, to our warehouse for inspection and evaluation.
There is no warranty of merchantability or tness of purpose. In no event will Delta Regis Tools, Inc.
be liable for business interruptions, loss of prots, harm, injury, damage, personal injury, cost of delay,
or any other special, indirect, incidental, or consequential losses, costs, or damages.
Warranty
The BECT6 and BECT8/9 Series Controllers are not user serviceable. Any repairs must be performed by a Delta Regis
authorized service center. Please consult Delta Regis Tools for further information and the location of the nearest authorized
service center. Repairs to CESL8/CESP8/CESLT9 series screwdrivers must be performed by trained personnel, knowledgeable
and qualied in the repair of DC electric screwdrivers. Use only genuine Delta Regis parts when servicing these products.
Do not attempt to modify the tools or controllers.
Service
Optional modules are available to add slow start and I/O functionality to the standard CESL8 tool and controller. These
modules plug in-line between the controller and the screwdriver. All modules oer adjustable slow start (0-9.9 sec, 30~100%
of full speed). Some models include input signal capability to provide further screwdriver control.
Please contact us or visit our website for further details on available modules and their features.
Slow Start / Output Signal Modules
Controller models BECT640HL and BECT940HL provide the power required to run the 40VDC
Brushless Series Screwdriver. The more powerful BECT940HL should be used with higher
torque CESLT835-865M(PM), CESP835-865, and all CESLT9 screwdriver models, especially
when prevailing torques or higher duty cycles are involved. CE/RoHS/ETL Approved.
Models BECT840-SSO and BECT940-SSO are optional count/verify controllers for the 40VDC
CESL8/9 series screwdrivers. Please refer to the separate BECT840-SSO Manual for further
details and functionality.
Controllers for 40VDC Brushless CESL8/9 Drivers
Model
Number (1) Outlets Speeds
Tool
Connector Output Input
Dimensions
L x W x H (mm)
Weight
(kg)
Use with
Screwdriver Models
BECT640HL
1 Hi/Lo 6 pin
40/30VDC, 220W
100-240VAC,
6.3A
220 x 134 x 85 1.8 CESL828-829(P/F/PF/S)
BECT940HL 40/30VDC, 360W 220 x 134 x 85 1.8 CESLT8_M, CESP, CESLT9
BECT840-SSO 40/32VDC, 220W 248 x 130 x 100 2.5 CESL828-829(P/F/PF)
BECT940-SSO 40/32VDC, 360W 248 x 130 x 100 2.5 CESLT8_M, CESP, CESLT9
BECT640HL
HI/LO SPD CONTROLLER
(1) Part number with North American cordset. For EU cord, add sux ‘E’ , UK cord add sux‘UK’.
Delta Regis oers various accessories for use with the screwdrivers listed in this manual. Please contact us or visit our website
for further details on available accessories.
If you require a parts drawing or replacement spare parts for your Delta Regis product, please call us or send an e-mail
request to [e-mail].
Accessories and Parts