HEDMAN OPERATING MANUAL HF-400 FOLDER The HEDMAN Company 189 Gordon St. Elk Grove Village, IL 60007 800-872-2788 Part Number 198569 HF REV. 12/04
Contents Contents Introduction Thank You...1 Description...1 Product Features...1 Controls And Indicators...2 Customer Assistance...6 Terminology...6 Important Safety Information...8 Set Up Support...9 Power...9 Feed Table Extension...9 Exit Conveyor...10 Stacker...11 Document Preparation And Loading...12 Standard Folds General Set Up...14 Fold Length Settings...15 Length Adjustments...16 Folding Sequences...17 Skew Adjustments...18 Custom Folds General Set Up...19 Fold Measurements And Settings...19 Adjustments...19 Maintenance And Troubleshooting Paper Jams...20 Cleaning...26 Troubleshooting...28 i
Introduction Thank You Thank you for purchasing the HEDMAN HF-400 document folder. Properly used and maintained, this machine will provide many years of reliable service. Description The HF-400 imparts both standard and custom folds to cut-sheet documents from 3.25" x 5" (A6) up to 11" x 17" (A3). Fold type and dimensions are set using the scales on the top tables and documents to be folded are stacked between guides on the feed table. The feed rolls take the top sheet from the stack and feed it into the folding process. Finished documents exit the folding process and are neatly stacked on the exit conveyor. Product Features The HF-400 incorporates advanced features for ease of operation, office friendliness and reliability. Large, 400 sheet, document capacity. Top feed system takes a square stack of documents no fanning needed. Fold tables are arranged in a V pattern for easy operator access and visibility. Quick, flip-slide-snap macro adjustments for paper stops in the center of the fold tables. Convenient micro adjustment knobs for paper stops at the top ends of the fold tables. Easy paper thickness and skew adjustments. Out-feed stacking rollers at the exit conveyor self-set for standard folds. They can also be adjusted for custom folds. Powered exit conveyor provides neat stacking. Extended exit tray accumulates a large output. Insulated for noise reduction. Heavy gauge steel chassis for an extremely strong machine assuring perfect alignment. Split style fold tables allow easy maintenance by removal of only the top portion of the tables easy, light and free of power connections. Removable top roller for easy access and cleaning. 1
Introduction Controls and Indicators This page and the next page show the HF-400 with the feed and exit devices folded to conserve table space when the machine is not in use. The stacker assembly must be removed (see page 11) in order to fold up the exit conveyor and tray. HF-400 1. Exit Tray Retaining Screw (No. 2 Phillips) 2. Exit Conveyor Foot 3. Exit Conveyor Latch (pull to release) 4. Exit Conveyor (folds down) 5. Exit Tray See pages 4 and 5 for additional controls and indicators. 5 2 4 1 3 2
Introduction 6. Feed Table Extension (folds down) 7. Feed Table Extension Latch (pull to release) 8. Skew Adjustment Knob 9. Power Cord Socket 10. Fuse Drawer 11. Main Power Switch 33. Feed Table Lever 7 6 33 9 8 11 10 3
16 Introduction Controls and Indicators This page and the next page show the HF-400 with all its elements in their operating positions. See pages 2 and 3 for additional controls and indicators. 13 15 14 12 16 17 HF-400 12. Fold Table (first fold) 13. Fold Table (second fold) 14. Fold Stop Lever 15. Fold Stop Latch 16. Fold Length Fine Adjustment Knob 17. Fold Table Scales 18. Folder Start/Stop Switch 19. Stacker Assembly Center Knob (adjustment) 20. Stacker Assembly Thumb Screw (attachment) 21. Stacker Assembly 22. Exit Conveyor Belt 23. Exit Area Access Door 24. Exit Area Door Latch (pull to release) 25. Top Roller Release Lever (rotate down to release roller) 17 18 See page 11 for additional stacker assembly detail. 19 20 21 24 23 22 25 4
Introduction 31 4 23 34 6 32 5 33 30 28 29 27 26 4. Exit Conveyor 5. Exit Tray 6. Feed Table Extension 26. Paper Guides 27. Paper Guide Lock Knobs 28. Paper Thickness Adjustment Knob 29. Feed Area Access Panel 30. Feed Area Access Panel Latch 31. Feed Table 32. Long Paper Support 33. Feed Table Lever 34. Stacker Assembly Roller 5
Introduction HF-400 Customer Assistance Should you encounter any problems with this machine or not understand its many features, please refer to this manual. If you require further assistance after reading this manual, please contact the authorized Hedman Dealer or Distributor for your location. These authorized Hedman Representatives employ factory trained service technicians and stock genuine Hedman spare parts. To find the authorized Hedman Dealer or Distributor for your area, call 847-718-6500 or visit our Web site www.hedmanco.com. Terminology Several terms have specific meanings as they are used in this manual: DOUBLE-PARALLEL FOLD A fold that divides the sheet into four panels. Useful for inserting legal size sheets into business envelopes. This fold cannot be made in sheets smaller than legal size. EXIT END The left end of the HF-400 where the folded documents exit the machine. FEED END The right end of the HF-400 where the flat documents are placed to enter the folding process. FOLD TABLE The sloping portion of the HF-400 that controls the position of the fold on the document. The first fold is formed when the document is in the fold table to the right; the second fold is formed when the document is in the fold table to the left. GATE FOLD A fold that divides the sheet into one panel that is half the length of the sheet and two overlapping panels one quarter the length of the sheet. 6
Introduction Terminology LEADING EDGE The edge of the document that enters the folding process first. LETTER FOLD A fold that divides the sheet into three panels with the front of the top and bottom parts of the sheet facing in. (Sometimes called a C fold.) OPERATOR SIDE The side of the HF-400 that is nearest the operator. Operating controls can be conveniently reached from this side. No controls are on the opposite side. SINGLE FOLD A fold that divides the sheet into two panels. This is the first fold in the sheet and there is not a second fold. STANDARD FOLD Any of the five folds for which icons are shown on the fold table scales when made in standard (8.5" x 11", 8.5" x 14" & 11" x 17") size sheets. Those five folds become custom folds when made in other sheet sizes as do variations of the five folds in any size sheet. TRAILING EDGE The edge at the last part of the document to be drawn into the machine. ZIG-ZAG FOLD A fold that divides the sheet into three panels with the front of the top part of the sheet facing out and the front of the bottom part of the sheet facing in. This fold is often used to allow the address to show through a window envelope. (Sometimes called a Z fold or accordion fold.) 7
Introduction HF-400 Important Safety Information To make the most of the HF-400, it must be operated and maintained properly. Please read these operating and maintenance instructions carefully before using the HF-400. Special attention must be paid to the WARNING and CAUTION statements in this manual. WARNING Statements identify conditions that could result in personal injury or loss of life. CAUTION Statements identify conditions that could cause damage to equipment or documents being folded. Statements identify conditions that do not warrant a warning or caution, but are unusual or may not be unexpected. They are also used to point out available alternatives or to add emphasis to important points. Before operating or maintaining the HF-400, please read these general warnings and cautions. WARNINGS NEVER clean, clear or disassemble the HF-400 without first unplugging the power cord. ALWAYS keep loose clothing, ties, scarfs, and hair away from all moving parts. NEVER place fingers between or near moving parts. CAUTIONS DO NOT disassemble the HF-400 further than removing access panels and fold tables as shown in this manual. There are no user serviceable parts in the unexposed areas. NEVER allow liquids to splash or spray into the HF-400. ALWAYS stop the feeding of documents at the first indication of jams or improper folds. TRY OUT new folds on blank paper before loading documents that cannot be readily replaced. 8
6. Feed Table Extension 7. Feed Table Extension Latch (pull to release) 9. Power Cord Socket 10. Fuse Drawer 11. Main Power Switch 32. Long Paper Support Support Set Up Place the HF-400 on a solid table or stand in a position where the operator has access to both ends of the machine as well as to the operator side of the machine. 11 9 WARNING Always use two people to lift and position the machine. In addition to its weight, the size of the HF-400 can place a single person in an awkward or unbalanced position. Adequate space should be provided near the machine for flat and folded documents. 10 Power Connect the HF-400 to a 120V power outlet with the supplied cord. The cord plugs into the socket (9) at the bottom right corner of the feed end of the machine. 7 6 32 After set up is complete, the main power switch (11) can be turned on to activate the machine. The fuse drawer (10) contains two T3.15AL250V fuses, one in the hot line and one in the neutral. Both fuses must be in place for the HF-400 to operate. WARNING Unplug the power cord before removing the fuse drawer. Feed Table Extension If the feed table extension (6) has been folded up, pull the feed table extension latch (7) and lower the extension to the operating position. For sheets longer than 14, pull out the long paper support (32) to support the trailing edge of the documents. 9
Set Up HF-400 Exit Conveyor If the exit conveyor (4) has been folded up, pull the exit conveyor latch (3) and lower the exit conveyor to the operating position. The exit tray (5) can be extended if more than a few documents are to be folded in a batch. 3 After lowering the exit conveyor, re-attach the stacker assembly (see page 11). If the exit tray (5) has not been assembled to the exit conveyor (4), slide the exit tray into the guides in the underside of the exit conveyor and assemble the exit tray retaining screw (1) with the exit conveyor foot (2) into the pre-drilled holes in the guides. 5 2 4 5 1. Exit Tray Retaining Screw 2. Exit Conveyor Foot 3. Exit Conveyor Latch (pull to release) 4. Exit Conveyor 5. Exit Tray 1 4 10
20 Stacker Set Up To attach the stacker assembly (21) to the machine, position it above the exit conveyor and fasten it with the stacker assembly thumb screws (20) as shown in the two illustrations at left. 20 19 Ready to Attach Attached 35 36 21 After the stacker assembly is attached to the machine: FOR STANDARD FOLDS: 1. Move the fold stop lever extension (36) to about the midpoint of the table. 2. Engage the extension with the stacker connection slider (35) and insert the snap pin (37). The stop lever extension fits into the slot in the stacker connection slider and their holes must be aligned to insert the snap pin as shown in the detail illustration. 3. Allow the stacker to self-adjust its position to each fold. CAUTION The stacker assembly center knob (19) must be loose (turned fully counter-clockwise) when the stacker is connected to the stop lever extension. FOR CUSTOM FOLDS: 1. Pull the snap pin (37) to disconnect the stacker assembly from the stop lever extension. 2. Place a sample of the custom folded sheet at the machine exit. 3. Manually position the stacker assembly rollers (34) about 1 from the folded sheet. 4. Tighten (clockwise) the stacker assembly center knob (19) to keep the stacker in position. 36 37 35 34 37 11 19. Stacker Assembly Center Knob (adjustment) 20. Stacker Assembly Thumb Screw (attachment) 21. Stacker Assembly 34. Stacker Assembly Roller 35. Stacker Connection Slider 36. Fold Stop Lever Extension 37. Snap Pin
Set Up Document Preparation And Loading The stack of documents to be loaded should be squared up as much as possible to look similar to the stack that comes out when a new ream of paper is unwrapped. HF-400 INSERT To load the document stack: 1. Depress the feed table lever (33) to lower the leading edge of the feed table (31). 31 2. Insert the document stack all the way into the machine until it rests firmly against the stop. The documents should be inserted with the printed or front side up. DEPRESS 33 27 3. Move the self-aligning paper guides (26) inward until they are just snug against the document stack. ADJUST 4. Tighten the paper guide lock knobs (27) on both guides to keep them snug against the stack. 5. After the guides have been locked, return the feed table to its level position by raising the feed table lever (33). 26 The stack will be captured between the feed table at the bottom and the feed rollers at the top. 33 26. Paper Guides 27. Paper Guide Lock Knobs 31. Feed Table 33. Feed Table Lever 12 RAISE
28 Document Preparation And Loading Set Up After raising the feed table, adjust the paper thickness adjustment knob (28) to match the stock on which the documents are printed. The knob has six detented positions to adjust for paper from thin to thick. The knob is shown at the second tick mark for 20 pound paper. As paper thickness increases, rotate the knob clockwise. 28. Paper Thickness Adjustment Knob Paper feed characteristics vary depending on humidity, paper surface, type of ink used to print the document, and other factors. Therefore, settings for one document of a given thickness may not be the same as those for another document of the same thickness. A certain amount of trial and error may be necessary with this adjustment. Heated processes such as in copiers and laser printers can cause paper to curl. Be sure the documents are flat before loading them into the HF-400. If necessary, reverse curl the documents to flatten them. It may be possible to fold thicker sheets or specially finished paper on the HF-400. If these will not run with the available range of user settings, contact the local authorized Hedman Dealer or Distributor for assistance. 13
Standard Folds Standard Folds The scales on the HF-400 fold tables contain symbols for the five most popular folds and colored bands for the three most popular paper sizes. This makes it easy to adjust the machine for these folds. Only the simple controls at the top of the HF-400 are needed to set up the machine. HF-400 12. Fold Table (first fold) 13. Fold Table (second fold) 14. Fold Stop Lever 15. Fold Stop Latch 16. Fold Length Fine Adjustment Knob 17. Fold Table Scales 18. Folder Start/Stop Switch 13 14 12 15 16 16 17 17 18 To set up the HF-400: 1. Make initial length settings for the first and second folds using the scales (17) and indicators (38) (see page 15). 2. Load a few sheets of blank paper between the paper guides on the feed table (see page 12). 3. Press the Start/Stop switch (18) to fold two or three sheets. 4. Check that the fold is as desired. 5. Make fine adjustments in the fold length (see page 16) and skew (see page 18). Test until the fold is as desired. 6. Remove trial material, load the document stack and turn on the switch. Before changing fold settings or making fine adjustments, be sure the folding area of the HF-400 is cleared of all sheets. Either: Let the feed area run out of paper. Press thumb or finger lightly on top of the stack on the feed table while the machine is running. (See illustration at the top of page 15.) Feeding will stop and the machine will clear itself. This allows repeated trials without reloading paper each time. 14
14. Fold Stop Lever 15. Fold Stop Latch 38. Fold Length Indicator Fold Length Settings Standard Folds The scales (17) on the fold tables are as shown (second fold scale illustrated) with bands of: Light blue for 11" x 17" Medium blue for 8.5" x 14" (legal size) Dark blue for 8.5" x 11" (letter size). PRESS Fold symbols on the colored bands have leader lines to show where the indicator (38) should be positioned for that fold. The illustrated example shows the indicator position for the second fold in an 11" x 17" sheet for either a single fold or a gate fold. The setting for the first fold will determine which of the two will result from this second fold. The indicator may be slightly off center after adjustment to get a perfect fold. Different paper types and weights will have slightly different positions on the paper stop indicator. 14 15 38 15
Standard Folds Fold Settings HF-400 14. Fold Stop Lever 15. Fold Stop Latch 16. Fold Length Fine Adjustment Knob 14 15 To move the indicator to the desired fold position, rotate the latch (15) up to the stop lever (14) and slide the stop lever up or down the table. The indicator will move with it. Rotate the latch down to lock the lever and indicator in place. Length Adjustments Fine adjustment of the fold length is accomplished with the fine adjustment knob (16). When adjusting fold length with this control, at least one full rotation of the knob will be required to make a noticeable change. Latch Down Adjustment Locked 16 To make fine adjustments in the fold length: 1. Evaluate whether the first fold needs to be nearer to the leading edge of the sheet or further away from it. Then, evaluate whether the second fold needs to be nearer to the first fold or further away from it. (See page 17 for fold sequences.) 2. Turn the fine adjustment knob (16) in the shorten direction if the first fold needs to be nearer the leading edge. Turn it in the lengthen direction to move the fold further down from the leading edge. Make corresponding adjustments for the second fold if needed. 16
Trailing Edge Trailing Edge Length Adjustments Standard Folds Example: Two imperfect letter folds and their corrections demonstrate examples of using the fine adjustment knob. Corrective action: Shorten first fold Lengthen second fold Corrective action: Lengthen first fold Shorten second fold Gate Fold LETTERHEAD First Fold Second Fold Single Fold LETTERHEAD First Fold Folding Sequences The following illustrations of the five preset folds can be used to evaluate the finished product. All measurements are from the leading edge of the sheet. Letter Fold First Fold Zig-Zag Fold LETTERHEAD Second Fold LETTERHEAD Second Fold First Fold LETTERHEAD Letter Fold Address Inside Zig- Zag Fold Address Outside Double Parallel Fold Feed Direction LETTERHEAD Second Fold First Fold Second Fold When fed into the HF-400 as shown to the left, the letter and zig-zag folds will position the letterhead and address properly as shown. 17
Standard Folds HF-400 Skew Adjustments Folds that are not perfectly parallel to the leading and trailing edges of the sheet can be corrected with the skew adjustment knob (8). Before making any skew adjustments, be sure the paper thickness adjustment (see page 13) is properly set for the paper being folded. Running thick paper with a setting for thin paper can sometimes cause skewed folds. To evaluate skewed folds: 1. Unfold the skewed sheet. 2. Observe whether the end of the fold at the right side of the sheet is further or closer to the leading edge of the sheet than the end of the fold at the left side. Folded Sheet Skew to left Leading Edge LETTERHEAD The top of the skew adjustment knob can be reached without folding up the feed table or unloading paper from the feed area. To make a skew adjustment: 1. Rotate the skew adjustment knob two or three turns in the appropriate direction 2. Remove and reload the paper stack. 3. Fold three or four trial sheets and observe the effect on the squareness of the folds. 4. Further adjust the skew knob and make trial folds until the folds are parallel with the leading and trailing edges of the sheet. LETTERHEAD Unfolded Sheet Skew to left Adjust Clockwise 8. Skew Adjustment Knob 8 18
38. Fold Length Indicator Custom Folds Cusom Folds The HF-400 can be used to fold a variety of sheet lengths and widths into the preset fold types or into variations of them. All custom folds are set up by first folding a sample sheet into the desired fold, then measuring two distances: 1. From the leading edge to the first fold. 2. From the first fold to the second fold. (See page 17 for folding sequences) Inch Scale Zig-Zag Fold 38 First Measurement LETTERHEAD Second Fold First Fold Second Measurement These distances are then set using the inch scales on the fold tables. In the illustration, the indicator (38) is set at 8.5". The dimension of the first fold should be set on the first fold table (to the right) and the second on the second fold table (to the left). Trailing Edge Letter Fold Two measurement examples are illustrated. Make fine adjustments to the fold lengths in the same way as described for standard folds (see page 16). First Measurement First Fold Second Fold Second Measurement Treat a single fold as if it were the second fold. Set the indicator on the first fold table all the way down to the single fold icons. Then set the dimension to the fold on the inch scale on the second fold table. LETTERHEAD Trailing Edge 19
Maintenance and Troubleshooting HF-400 Paper Jams Paper jams can occur at all three stages of the folding process. In the: Feed area Central folding area Exit area. All these areas are easily accessible without the use of tools as shown in the following sections. 29 30 28 WARNING Before attempting to clear any jam or open any access panels, turn off the main power switch (11) and remove the power cord from the socket (9) (see page 9). 31 CAUTION Do not attempt to clear jams by poking sharp objects into the openings or by cutting sheets wrapped around rollers. Permanent damage to both the resilient and metal rollers is likely as a result of any use of knives or sharp objects. Remove jammed sheets only by carefully pulling them out or unwrapping them using only your hands and fingers. Feed Area Clearing To clear a jam in the feed area: 30 28. Paper thickness adjustment knob 29. Feed area access panel 30. Feed area panel latch 31. Feed table 1. Remove the document stack from the feed table (31). LOWER 2. Release the two access panel latches (30) by rotating them down and remove the access panel (29) by pulling it out. REMOVE 3. Clear the paper from the feed area. 20
Maintenance and Troubleshooting FEED ROLLERS Feed Area Clearing The feed rollers can be turned by hand (in one direction only) by pulling on the top of a roller or by turning the axle. After the jam is cleared: 1. Insert the access panel, keeping it above the paper thickness adjustment knob (28) and being sure the notches on the access panel (29) engage the pins near the feed roller axle. PINS 2. Refasten the access panel by raising it fully up to the mating flange and rotating the two latches to the locked position. NOTCHES RAISE 21
HF-400 Maintenance and Troubleshooting 39 Central Folding Area Clearing The folding process takes place in the area within the fold tables. To reach this area, both of the fold table tops must be removed. To clear a jam in the central folding area: 1. Release the two latches (39) at the top of each fold table. 2. Move the fold stop levers (14) near the center of the table to provide clearance for removing the fold table tops. 3. Slide each fold table top upward a few inches to clear the guides at the bottom, then lift it off the machine. 40 The top roller (40) and lower fold tables will be visible. 25. Top roller release lever 39. Fold table latch 40. Top roller 25 22
Maintenance and Troubleshooting Central Folding Area Clearing 4. Release the two top roller release levers (25) in the exit area. 5. Grasp the top roller and lift slightly. Push straight into the far side until the near end is clear of the side frame. Rotate the near end of the roller up and the roller out of the bearing seat to remove it. 6. Clear the paper from the fold area. TOP ROLLER BEARING SEAT The bottom roller (41) can be rotated by hand to unwrap sheets 7. Re-assemble the center fold area by reversing the dis-assembly steps. Roller bearings are pressed onto the ends of the top roller. When re-inserting the roller into the machine, be sure the roller is centered between the side frames and the bearings have settled into their seats. BEARING 41. Bottom Roller 41 Do not forget to re-engage (rotate upward) the two top roller release levers (25) in the exit area. The bottom roller is the most important one to be cleaned. Whenever it is exposed, check it and clean if necessary (see page 27). 23
Maintenance and Troubleshooting Central Folding Area Clearing When sliding the fold table tops down into position during re-assembly, be sure both of them fit under the fold table top guides (42) and the table tops are slid completely in before rotating the latches down to lock them in place. The silver alignment tabs between the latches must be in the slots in the end of the fold table top and flush with its surface. Exit Area Clearing To open the exit area of the HF-400, the stacker assembly (21) must first be removed. Refer to page 11 describing the installation of the stacker assembly and remove it by reversing the installation process. The top roller release levers (25) must be engaged (up position) to allow the door to swing down. 24 42 HF-400 20 21 23 To clear a jam in the exit area: 1. Pull the two exit area door release latches (24) and lower the door (23). 24 25 20. Stacker assembly thumb screw 21. Stacker assembly 23. Exit area access door 24. Exit area door latch 25. Top roller release lever 42. Fold table top guide 24
Maintenance and Troubleshooting Exit Area Clearing 2. With the exit area access door (23) fully lowered, grasp the foam exit roller (43) at both ends and pull it straight out of its C-shaped bearing seats. 3. Clear the paper from the exit area. 4. Re-assemble the exit roller into its bearing seats (44) by pushing it straight into the bearing seats until a light click is heard or felt. 5. Close the door and re-install the stacker assembly. 43 23. Exit area access door 43. Exit roller 44. Exit roller bearing seat 44 43 25
Maintenance And Troubleshooting HF-400 Cleaning As the HF-400 is used, the feed, fold and exit rollers can become coated with a build-up of paper dust, ink or toner transferred from printed documents. This build-up can cause roller traction to change and result in improper folds due to slippage or hang-up between the rollers and documents. It can also result in smudges on folded documents from ink or toner being re-transferred off the rollers. If folds start to change without changing machine settings or if smudges are observed, stop the folding process and clean the rollers. WARNING Turn off the main power switch and pull the power cord plug out of its socket before beginning any cleaning process. To clean the rollers: 1. Refer to the paper jams section (pages 20 to 25) for instructions on gaining access to the feed, fold and exit areas of the HF-400. 2. Use a clean cloth and isopropyl alcohol to wipe the roller surfaces. If alternative cleaners are to be used, be sure they will evaporate completely without leaving a soapy film on the rollers. FEED ROLLERS FEED END The four feed rollers can be rotated by hand. Pull on the top surface of one of the rollers to expose the entire surfaces for cleaning. 26
Maintenance And Troubleshooting FOLD AREA The top roller (40) can be cleaned after it has been removed. With the top roller removed, the bottom roller (41) can be rotated by hand in both directions to reach the whole surface. The bottom roller should be thoroughly cleaned all the way around. This is critical to proper operation. 40 43 41 EXIT END The removable exit roller (43) can be cleaned outside the machine. The fixed exit roller (45) can be rotated on its axle by hand. It will also move when one of the fold rollers is rotated. Either way, the whole surface of the fixed exit roller can be exposed. 3. Allow all surfaces to dry before reassembling the components and closing the access panels. 45 CAUTION Do not use strong solvents in the cleaning process. The compounds in the rollers may be damaged. 40. Top roller 41. Bottom roller 43. Exit roller (removable) 45. Fixed exit roller Whenever the HF-400 is opened to clear paper jams, it is a good idea to look at the rollers and clean them if needed. 27
Maintenance And Troubleshooting HF-400 Troubleshooting The following tables provide areas to check and corrective actions for some problems that may arise. The start/stop switch on the top of the HF-400 should glow red when power is turned on and all latches are properly closed to activate their associated safety interlocks. If that switch does not glow, perform the checks in the first table until the switch is illuminated. Machine will not run when start/stop switch is turned on: Check Is power cord plugged into a live outlet and fully inserted in the socket on the machine? Is the main power switch turned on? Is a fuse blown? Are the fold tables fully seated and latched? Is there a paper jam in the machine? Correction Verify that the wall outlet has power and push plugs all the way into sockets. Turn on the main power switch. Remove the power cord from the socket and check the fuses (see page 9). Replace fuse if blown. Check that the fold tables are fully seated and that the silver alignment tabs are in their slots (see page 24). Close all fold table latches to activate safety switches. Clear paper jam. Paper does not feed when start/stop switch is turned on: Check Correction Is paper properly loaded? Are feed rollers slipping on the top sheet of the paper stack? Are paper guides too tight? Check for paper in feed area. Check that the feed table lever is up. Check that the paper has been fully inserted to the stop before raising the feed table. Clean the feed rollers (see page 26). Change paper if possible. Some types of paper (especially coated stock) do not feed well. Loosen guides and readjust to be just snug against the paper stack. Retighten guide lock knobs. WARNING Before taking corrective action to clean rollers, be sure the power cord is disconnected. 28
Maintenance And Troubleshooting Paper feeds irregularly: Check Are the feed rollers clean? Is the paper thickness knob set properly? Are paper sheets stuck to each other? Is the paper stack square? Is the paper curled? Fold quality is poor: Check Are fold dimensions as desired? Are the folds square with the edges of the paper? Correction Clean the feed rollers (see page 26). Adjust the knob to the paper thickness being used (see page 13). Remove paper, bend the paper stack back and forth to break the bonds, re-square the stack and reload. Be sure that all sheets in the stack are even with one another. Remove and reverse curl the paper to flatten it, then reload. Correction Reset the fold dimensions and fine adjustments on the fold tables (see pages 14 to 19). Clean the fold rollers under the fold tables (see page 27) Be sure paper is loaded squarely on the feed table. Skew can be caused by running thick paper with the paper thickness adjustment set for thin paper. Adjust the knob (see page 13). Too much paper in the stack can cause skew. Reduce stack to 400 sheets or less. Make correction with the skew adjustment knob (see page 18). Clean the feed and fold rollers (see pages 26 and 27). WARNING Before taking corrective action to clean rollers, be sure the power cord is disconnected. FACTORY TRAINED SERVICE If the problem cannot be solved using these troubleshooting methods, contact the authorized Hedman Dealer or Distributor for your location (see page 6) to obtain help from a factory trained technician. Should the problem be severe enough that the HF-400 must be returned to the factory, the authorized Hedman Dealer or Distributor will properly package the machine to avoid damage in transit. 29