Kolver Nfk N14 Automatic Screw Feeder Instruction Manual

NFK N14 Automatic Screw Feeder
Instruction Manual

Features

Adjustable for a wide range.
This automatic screw feeder can handle a wide range of screws, e.g. metric or self-tapping screws, between M1 and M5 and 20 mm max length.

Working smoothly
The NFK can work continuously without interruptions or jams thanks to the particular loading circuit and to the movement of the brush. Any screw in the wrong position falls in the screw storage so the loading cycle can restart.

Adjustable speed
It’s possible to adjust the vibration speed and the speed of the brush/loading wheel. Different combinations of speed allow adapting the NFK to different works.

General instructions

Before performing any such task, please read carefully these instructions and save them for future reference.

NFK Accessories.
The NFK package contains:
– 1 x NFK already adjusted at the size required
– 1 x Instruction manual
– 1 x AC/DC adapter + power cord
– 1 x kit of spacers
– 1 x hexagonal key

General precautions.
Install the NFK in a stable horizontal position:
an inclined base can affect the correct output of the screws. Improper installation could cause the NKF to fall or jam.

Workplace.

Do not operate in presence of oil smoke, steam, moisture, or dust. It may occur like fire or electric shock.

Cleaning. 
Keep clean the lubricated parts and check them periodically.
Keep the screw storage clean and be careful of possible foreign material inside. Regularly inspect the rail.

AC/DC Adapter.
Do not use any AC/DC adapter other than the specific one. It may occur as fire or electric shock.

Rail.
Handle the rail carefully. It does not need to be lubricated but cleaned periodically. The dirt can block the screw flowing.

Picking up the screws.
Do not exert any force to pick up the screw.
Excessive force could break or hit the unit.

Screw.
Do not use dirty or greasy screws, all dirt can clog the NFK. Use only suitable screws (see Technical Data). Do not overfill the storage, the correct amount is described here below.

Covers.
Before any performance, make sure that all the covers are closed and secure.
IMPORTANT: Switch off the NFK before opening the covers.

When the NFK is off.
Disconnect the AC/DC adapter, when the unit is not used for an extended period of time.
WARNING. When an abnormality occurs, stop immediately, turn off the power and unplug the power cord of the unit. Contact your Kolver dealer immediately.

Technical data

Screw: Suitable for every head shape
D: Head diameter
A: Shank length
L: Total length

Voltage: 12V DC 500mA
Tension: IN 100/240 AC OUT 12V DC 1,25A
Dimensions: 184 x 123 x 148 mm (L*W*H)
Weight: 2,75 Kg
Storage temperature: from 0°C to +50°C

IMPORTANT: the item is not grounded!
In case it’s necessary, please connect an eyelet to a screw on the bottom.

Adjustments

Brush adjustment.
The eject brush places the screws that flow along the track and throws the ones in the wrong position in the storage.

Procedure: 
To adjust the eject brush height, loosen the screws in the picture below, and raise or lower the brush to the height of the head of your screw.

If the brush has been set too high, screws in the wrong position could pass and stop the passage. If too low, the brush could get stuck.

Bit guide & track cover adjustment.
To pick the screw up correctly, the bit guide should be centered on the screw head (see picture below). It’s also possible to adjust it right/left and forward/backward. It should be also adjusted the height of the track cover in such a way as to pass only the screws in the correct position.
Procedure:
Remove the front panel by unscrewing the 4 screws as in the picture below and by slipping off the power button.
To adjust the bit guide right/left, loosen the A
screws and turn the E screw: clockwise to move the bit guide to the right, and counterclockwise to move it to the left. Once you have found the right spot, tighten A  screws.
To move it forward/backward, loosen D
screws, find the correct position and fasten it again.

To adjust the height of the block track covert
guide, loosen B and C screws, and turn the screw clockwise to lower, and counterclockwise to raise it. Once you have found the right spot tighten B screws.
To adjust the advancement of the track cover using F screws to cover up to the penultimate screw (see picture here below).

Speed adjustment.
Adjust the vibration speed and the speed of movement of the brush/ loading wheel depending on the use and on the type of screw.
G trimmer adjusts the vibration speed, while H trimmer adjusts simultaneously the speed of the brush and of the wheel of charge. For both the trimmer, if turned clockwise, the speed increases, anticlockwise it decreases.

After the adjustments, reassemble the NFK.Make sure that all screws are tightened properly.

Track adjustment.
Thanks to the kit of spacers (from 1.3 to 5.3 mm of thickness ) supplied with the NFK, it is possible to adjust the NFK screws from M1 to M5.

Procedure.
Remove the front panel as previously explained (see Bit guide regulation).
To remove the track, it’s first necessary to enlarge the 2 gate lock screws. Loosen the I and L screws, then M and N screw up to a sufficient width to extract the track.

Loosen the O screw and then extract the track.

After removing the track and choosing the 2 spacers suitable to the screw used, loosen the P and Q screws, and unscrew the R screw.

Replace the spacer and tighten the screw R starting the new one at an angle of about 30 °.At the same time enter the second spacer at end of the track as a reference for the
distance between the two plates then tightens the P and Q screws.

Reassemble the track, tighten the O screw, and closed the gates through M and N screws, clearance of 1 mm. Tighten i and L screw.
Adjust the bit guide and the cover track Each new shape screw

Troubleshooting.

ERROR
L’NFK nonsi accede

PROBLEM
NFK does not turn ON

Exploded view & spare list.

DECLARATION OF CONFORMITY

KOLVER S.r.l.
VIA MARCO CORNER, 19/21
36016 THIENE (VI) ITALIA 

Declare that the new tool here described:
Automatic screw feeder:

Is in conformity with the following standards and other normative documents: 2006/42/CE, LVD 2014/35/UE, EMCD 2014/30/UE, EN 62841-2-2:2014,
EN 62841-1: 2015, EN 60204-1, EN 61000-6-2, EN 61000-6-4.
It is also in conformity with RoHS III normative (2011/65/UE and following 2015/863).

Name: Giovanni Colasante
Amministratore Delegato/General Manager
The person authorized to compile the technical file in Kolver

Thiene, 1° Gennaio 2021