During the use of cutter stacker, some routine maintenance must be done, as well as wearable parts should be replaced once worn. 

In the video below, you will find the most common procedures of cutter stacker servicing, such as: 

• Blade movement pattern (crankshaft eccenter) adjustment
• Blade replacement 
• Blade crossing adjustment (might be needed after longer usage for proper cut quality avoiding full blade replacement, as well after blade replacement)
• Upper blade height adjustment
• Cleaning of the machine
• Lubricating the joints

Detailed information you will find in the video below. 

Godex Cutter Stacker Device Service Procedures

This document provides detailed service instructions for the Godex Cutter Stacker device, extracted from the official service video. Please ensure to follow all safety precautions.

Source Video: Godex Cutter Stacker Servicing Guide

1. Initial Steps

1. Before making any adjustments, turn off the machine and unplug the power cord [00:04].
2. Unscrew the two screws to remove the metal cover of the Cutter Stacker unit [00:11].
3. For convenience, you can put the CS unit back on to the printer, but be careful as it will be loose and can fall down. Alternatively, you can use an appropriate nut to fix it on the printer [00:34].
4. Remove the two screws and remove the knife safety cover [00:51].

2. Adjusting the Crankshaft/Eccentric

1. Release the screw [01:22].
2. Hold the pin at the sensor position [01:28].
3. Adjust the eccentric (labeled as 4) with a key so that the upper knife, at the sensor resting position, would be at the top most moving position [01:28].
4. Retighten the screw [01:28].
5. Ensure the screw is moderately tight so you can manually move the pin but it won't slide. You should be able to adjust the eccenter with the key. While adjusting, manually move the pin and see how the upper knife behaves. At the resting position (when the pin is at the sensor), the knife should be at the top most position, and when you move the pin/motor forward, the knife should go down [01:48].
6. Once you find the right eccenter position, retighten the screw with proper force. Make sure the eccenter and pin are snug [02:18].

3. Blade Replacement/Adjustment

1. Release the screw and loosen the ring/spring [02:36].
2. Release the upper knife screw and take it out [02:43].
3. Then you can remove the upper blade [03:00].
4. Remove the right guide [03:06].
5. Pay attention to the carriage. Move it all the way to the left guide. PLEASE DO NOT remove the carriage from the CS, as the bearing balls can fall out [03:19].
6. Remove the screws and slide out the lower blade [03:24].
7. You might need to take out the positioner screws from the old blade and install them in the new blade [03:34].
8. Install the blades in the reverse order. Do not fully tighten the screws yet. You need to have them fairly loose for blade crossing adjustment with the small positioner screws on the lower blade [03:43].
9. Install the upper blade. Pay attention to the PINS and notch [03:56].
10. The upper blade screw should be tightened with proper force; please use a towel to hold the knife when tightening to avoid any possible injury [04:21].
11. Check the "play" and if the blade is moving properly [04:29].

4. Blade Adjustment (Blade Crossing)

1. Correct blade crossing needs to be set up for proper cutting performance and blade lifespan [04:33].
2. For blade adjustment, you need a 0.2-0.3 mm gauge (Fühlerlehre) [04:38].
3. Make sure that the ring is loose [04:46].
4. Move the blade down so that it would be in the lowest position [04:50].
5. With the small positioner screws, adjust the lower blade that on the left side it would be possible to insert the ~0.2 mm gauge. PLEASE MAKE SURE that the bottom blade bigger screws are loose enough to support the skewing [04:53].
6. Retighten the bigger screws, double-check if the gauge fits in. IMPORTANT - the spring should be loose when making this measurement/adjustment [05:28].

5. Blade Height Adjustment

1. Correct blade height adjustment is needed for proper operation. The resting position should be parallel to the metal block [05:43].
2. Release the screw [05:50].
3. Adjust the upper blade to the parallel position [06:03].
4. Retighten the screw and test the blade play [06:09].
5. Retighten the spring ring. Distance should be ~13-17 mm. The smaller the distance, the higher the force to the upper blade [06:17].
6. Check the function over the whole knife width [06:33].

6. Ribbon Shield Adjustment

1. The TTR Shield is a metal part that helps to separate the TTR from Textile. The correct adjustment might differ with different medias [06:49].
2. Position the TTR shield so that it would be as close to the TPH as possible. Reassemble everything [07:33].

7. Reassembling the Unit

1. Reassemble the unit [07:39].
2. Mount the cover [08:22].

8. Cutting Line Adjustment

1. Sometimes you might need to adjust the cut line skew position. To do so, you can use the 4 screws on the base plate of the CS [08:58].
2. By turning these screws, you can adjust the base position how the CS "sits" on the printer [09:02].

9. Cutter Stacker Cleaning

1. It is necessary to regularly clean the machine to have proper print and cut results. For daily used machines, you must clean the printer printhead, platen roller, and the blades at least once a week [09:08].
2. Remove media and first blow the dust and debris with compressed air from the print and cut mechanism [09:12].
3. For printhead and platen cleaning, you can use special wipes soaked in isopropyl alcohol. Alternatively, you can use a lint-free wipe and soak it with isopropyl by yourself [09:23].
4. You might try to clean the TPH without removing the Cutter Stacker unit, however, the quality of such cleaning is limited [09:26].
5. To clean the platen roller, you can take it out [09:36].
6. The best cleaning results you will get when you will remove the CS unit and clean all of the important parts. By having the CS unit removed, you will have good access to them [09:51].
7. You can clean the blades with WD40. If you see dust or other residue on the blades, first use compressed air to blow the debris out and then with WD40 spray on the cloth and wipe the blades. It is not necessary to remove them. When doing this, THE MACHINE MUST BE TURNED OFF AND UNPLUGGED FROM THE MAINS! [10:07].
8. If you experience any issues with textile sticking to the blade, you might consider applying some silicon grease/oil to the blades [10:56].
9. Carefully apply the grease on to the blade. You might consider taking off the safety cover to rub it to the upper blade as well. MACHINE MUST BE UNPLUGGED from the mains [11:06].

10. Lubricating the Joints

1. From time to time, especially when using the machine intensively, you need to lubricate the joints of mechanisms. If the machine is used intensively, you need to lubricate once a month [11:18].
2. Lubricate the indicated joints [11:24], [11:53].