Kolver RAF38NS Service manual

Place and date Signature
DECLARATION OF CONFORMITY
Error! No topic specified.
KOLVER S.r.l.
Via MARCO CORNER, 19
36016 THIENE (VI) ITALIA
Declare that the new tool here described:
Electric screwdriver Model RAF38NS N°………………
Is in conformity with the following standards and other
normative documents :
89/392 and following amendments
73/23 e 93/68
Name: Giovanni Colasante
Position: Managing Director
Thiene, ………… ...….……...……….
Operator’s Handbook
GENERAL SAFETY RULES
WARNING: when using electric screwdrivers, basic safety precaution
should always be followed to reduce the risk of fire, electric shock and
personal injury. Read all the instructions below before using the
screwdriver and save them.
1. Keep the work area clean and well lit.
2. Do not use the electric screwdrivers in dampt or wet locations or in
presence of flammable liquid or gases.
3. Avoid body contact with grounder surface as pipes, radiator,
refrigerators, etc.
4. Keep children and visitors away from work area.
5. When not in use screwdrivers should be stored in dry and locked-up place
and out of the reach of children.
6. Do not use the srewdrivers for purposes or work not intended.
7. Dress properly. Do not wear loose clothing and jewelry. Wear protective
hair covering to contain long hair.
8. Never carry the screwdriver by cable or yank it to disconnect it from
socket.
9. Use clamps or a vice to hold work.
10. Keep proper footing and balance at all times.
11. Inspect tool cable periodically and, if damaged, have it repaired or
replaced by authorized service facility. Always keep handles dry, clean
and free from oil and grease.
12. Disconnect tools from power supply before any operation of servicing,
when changing accessories and when you do not use them.
13. When screwdriver is used outdoors, only operate with extension cords
intended for use outdoors and so marked .
14. Pay attention while working. Do not operate screwdriver when you are
tired.
15. Always check the screwdriver is not damaged before using it. Detective
switches must be replaced by authorized service center. Never use tools
that cannot be turned on or off by the switch .
16. The use of any other accessory other than recommended in this operating
instruction may represent a risk of personal injury.
17. Have the screwdriver repaired only by authorized and expert people.
Failing to do so may represent a serious danger.
WARNING: before connecting the control unit and power supply to the
socket, please check the voltage you are using is that indicated on the label
of the unit itself.

SPARE PARTS LIST RAF38NS
REF DESCRIPTION CODE REF DESCRIPTION CODE
1 Stop Ring 200001 35 Bearing 220035
2 Torque Nut 201002 36 Spacer 220036
3 Steel Ball 200003 37 Circlip 220037
4 Circlip 200004 38 Inner Gear 220038
5 Bushing 200005 39 Screw 200039
6 Torque Spring 220406 40 Circlip 220040
7 Circlip 200007 41 Washer 220041
8 Bit Ring 200008 42 Reduction Plate 220442
9 Bit Spring 200009 43 Washer (8) 220043
10 Circlip 200010 44 Planet Gear (4) 220444
11 Ball 200011 45 Reduction Plate 220445
12 Spindle 221012 46 Planet Gear (4) 220446
13 Needle Bearing 200013 47 Main Gear 220447
14 Circlip 221014 48 Motor Joint 220048
15 Spring 221015 49 Screw 220049
16 Ring 221016 50 Motor Head 220050
17 Buffer Cone 221017 51 Motor 220051
18 Hook Piece 201018 52 Carbon Brush Spring 220052
19 Screw 201019 53 Carbon Brush 220053
20 Ring 220020 54 Grey Housing Right 220454
21 Bearing 220021 55 Start Lever 221455
22 Balls 220022 56 Start Switch 201056
23 Bearing Seat 220023 57 Reverse Switch 200057
24 Bearing Balls Seat 220024 58 Grey Housing Left 220458
25 Ball 220025 59 Housing Screw (4) 220059
26 Fixed Clutch 220026 60 Hook 200060
27 Balls 220027 61 Spring 221061
28 Bearing 220028 63 Cable 201063
29 Oil Protector 220029 64 5 Pin Plug 201064
30 Locking Nut 201030 65 Motor Locking Screw 220065
32 Clutch Housing 221032 66 5 Pin Connector 201066
33 Spring 200033 68 Screw (2) 210068
34 Clutch Switch 200034

1. Applications
KOLVER electric screwdrivers are used to tighten to the required torque screws,
nuts, studs and any other kind of threaded connection on any material. Table 1 will
help you to identify the capacity and the torque range of each model. Obviously, it
is possible to use the screwdrivers with screw having a larger diameter if the torque
fall within the indicated range. All models are reversible and can consequently be
used to unscrew. Electric screwdrivers are mainly used in the electronic industry as
well as for electric appliances, wiring, toys, lamps, glasses, in the mechanical light
industry etc.
Table 1
2. Use
The screwing system is composed by a screwdriver, a cable with 5 pin connectors
and by a control unit and power supply. To install it please follow the instructions.
a) Connect the 5-pin plug of the cable to the controller socket and to the
screwdriver and tighten the relevant nuts.
b) Push the collect ring of the quick charge chuck towards the body of the
screwdriver, insert the desired bit into the exagonal seat ¼’’ and release the ring.
c) Connect the controller plug to a mains supply socket 230V-50Hz.
d) Switch on the controller through the green light button “POWER”.
e) Position the bit head firmly into the fastener head, press the starting trigger and
run the faster down. The tool stops automatically when the preset torque is reached
and it is ready for the following operation.
3. Adjusting the torque
The torque value of the screwdriver is adjusted by changing the tension of the
clutch spring, screwing or unscrewing the threaded #2 nut. After each adjustament
lock the nut by means of #30 ring.
To increase the torque turn the nut clockwise, to decrease it turn the nut
anticlockwise.
Model Capacity Speed RPM Torque range Nm
FAB 10 RE M2,5 1000 0,05 – 0,8
FAB 12 RE M3 1000 0,2 – 1,4
FAB 18 RE M4 650 0,3 – 1,8
RAF 32 NS M5 1000 0,7 – 3,2
RAF 38 NS M5 650 0,9 – 4,1
The tool is equipped with an extra spring to reach the higher torque values
indicated in TABLE 1. To change the spring remove #2 nut, replace the spring and
then adjust the torque value as mentioned above.
To check the torque value we suggest the use of TL50i electronic torque tester.
WARNING: in cause the screwdriver does not stop automatically you should
reduce the torque setting by turning the #2 nut anticlockwise.
4. Control unit and power supply
EDU power supply and control units act as voltage transformer and electronic
torque controller.
The power supply 230V-50Hz AC is converted into 30V DC required by FAB and
RAF series screwdrivers through a transformer certified EN61558-1/p2-6.
The electronic control circuit cuts the power supply to the motor in response to the
clutch action as soon as the preset torque has been reached.
The table below summarizes all the possible combinations and different options.
Type of control unit Features Applications
EDU1NS 67VA, 1 plug, 1 speed Metric screws or self
tapping screws on plastic
EDU1NS/RA
67 VA, 1 plug, speed
regulation, soft start
regulation
Metric screws or self
tapping screws on plastic
EDU2CL 100VA, 2 plugs, 2
speeds
Metric screws or self
tapping screws for 2
screwdrivers
Table 2
Units EDU2CL is equipped with a two positions speed selector switch. When the
switch is in the “A” position the screwdriver will operate at the speed indicated in
table 1, when the switch is in “B” position the screwdriver will rotate at 70% of
the speed indicated in table 1.

All units are equipped with a power outlet on the back panel with autostopping fuse
holder certified IEC/CEE22. To replace the fuse just pull out the fuse holder and
change the fuse.
Always remember to switch off the control unit at the end of each working shift.
WARNING: always disconnect the mains plug of the power supply before
operating on the control units.
5. Maintenance
The screwdriver’s motor is equipped with carbon brushes 9mm long. When their
lenght is about 5mm it is time to replace them as per the following instructions:
a. Remove the #59 and #68 screws and the #54 and #58 housings.
b. Remove #53 brushes from their seat by delicately lifting up the #52
spring and desolder their wire.
c. Solder the wire of the new brushes, insert them into their seat and stop
them with the relevant #52 springs.
d. Re-mount the housing.
NOTE
The sound level generated by Kolver electric screwdrivers is always lower than
70dB(A).
The vibrations transmitted to operator’s hand are lower than 2.5m/s². In particular
the exposition to vibrations is lower than 1m/s² for operators who make up to 4200
screwing cycles per day.
WARRANTY
KOLVER warrants its products for a period of one year from the date of original
purchase. Any products which examination proves to be defective in workmanship
on material will be repaired or replaced free of charge during the warranty period.
For repair or replacement return the product, trasportation prepaid, to your nearest
KOLVER service center. This warranty does not repair or replacement required as
a consequence of misure, abuse, normal wear and tear.