Start-Up Operating Maintenance Diagnosis Chart
 
 
 
Maintenance @ Bagclosers.com

Single Thread Models
Model D (III) & D (III) LX - Fischbein Type. (for Kosha & Revo)
Model D(III) - HD.
Newlong NP-7A Type.

Double Thread (Single Needle) Model 
Model DT - N1 - Newlong NP-3II Type. 

 
 
 
Model D (III) & D (III) LX - Fischbein Type. (for Kosha & Revo)

Oiling
Needle Care
Needle & Looper Changing / Fitting
Setting the Looper Timing
Needle Bar Setting
Stitch Length Adjustment
Motor Care

 
 
 
Oiling 

Clean and oil machine daily. For best results, use REVO/KOSHA Cleaning Solvent and REVO/KOSHA Lubricating Oil obtainable from BAGCLOSERS.com or any Authorised Representative. 

Wash out dirt as follows: Unthread needle. With machine running, dip portion in three or four inches of solvent for about 10 seconds. Then in addition to the oil cups on the machine, oil all shafts, feed dog carrier mechanism, and cutting knife parts. (Important: Do not use gasoline or kerosene as a cleaning solvent.)

Top...

 
 
 
Needle Care 

Due to vibrations in Needle Bar - after some weeks of machine usage - the needle tends to slip from the Needle Bar. If it slips too low, then it will strike the parts underneath, causing breakage & machine downtime. 

To avoid this - every few weeks, loosen the Needle Nut a little, then push the needle upwards as much as possible - till it goes up no longer. Then tighten the Needle Nut again - so that Needle is now back again in its original position. 

Dip the thread cone in our Special Thread Lubricating oil for 2 minutes and then fix the cone onto the machine. When the oil-soaked thread passes through the needle-hole during operation, it reduces the needle temperature (Needle cools down) and thereby reducing chances that instantly cools down the needle during operation. Also the lubricant binds the thread plies, making re-threading easier.

When tar coated bags are stitched, the needle becomes sticky and extremely hot during operation. At 2000 S.P.M. needle cooling is a must otherwise it will result in more needle breakages.

Top...

 
 
 
Needle & Looper Changing / Fitting 

Insert new needle into needle bar as far as it will go, with the long groove facing exactly outside of machine. The long groove will enter into the bar. Lock needle securely with wrench provided with the machine. 

Remove needle, throat plate, feed dog, and pressure foot. To remove pressure foot set screws, remove needle bar guard, part No.D101. Using a screwdriver as a lever, lift up the pressure clamp, part No.D405, which will allow the pressure foot sufficient clearance to slide off the bottom of pressure bar. Do not loosen or alter setting of the pressure bar clamp, part No.D405. Loosen looper set screw, No.SS832316L and remove old looper. Insert new looper, making sure that it is down in the looper holder, part No.D301, as far as it will go. Securely tighten looper set screw against flat on looper shank. Install new straight needle. Unless the looper holder and/or needle bar have moved or have slipped, the looper will time up automatically. If necessary, adjust clearance between looper point and needle by loosening the looper holder clamp screw and sliding the holder in or out on looper shaft as required. 

Note: The point of the looper must pass through the centre of the needle scarf with about 1/64" clearance between looper point and needle. The scarf is the hollowed out section just above the eye of the needle.

Top...

 
 
 
Setting the Looper Timing

This adjustment does not have to be made when replacing the looper, but only after looper shaft, looper cam, or cam follower has been replaced.

The looper stroke is correct when there is approximately 1/32" between the looper point and the edge of the needle when looper is at maximum backstroke. To adjust, first rotate the machine in sewing direction so that the looper is at maximum back stroke position, then loosen clamp screw No.SC54012CF & SC54013CF in part No.D307 and move looper as necessary.

Top...

 
 
 
Needle Bar Setting

Remove needle bar guard, part No.D101. Turn the machine pulley in normal sewing direction until the looper is in approximate position shown in Fig.No.5, as the needle is on the upstroke. Slightly loosen clamping screw on needle bar clamp, part No.D502. Raise or lower the needle bar and/or turn the machine pulley to bring looper point flush with or not more than 1/64"back from the edge of the needle, and to align bottom edge of looper flush with top of needle eye. Do not change the looper setting. Securely lock needle bar clamp and replace needle bar guard. Recheck for proper needle/looper clearance.

Top...

 
 
 
Stitch Length Adjustment

The length of stitch is 31/2 to the inch, when, at their highest point, the teeth of the feed dog protrude 3/32" above the throat plate. If the stitches shorten up, check the following:

1. Teeth on the feed dog may be worn down. Feed dog must then be replaced.

2. Feed dog may have slipped so that the teeth protrude less than 3/32". Merely raise the feed dog by rising the adjusting the screws No.HD64038 located on the feed carrier block. Note that there is a set of locking screws No.HD64038 on the top of the feed carrier block under the Feed Dog.

Top...

 
 
 
Motor Care

Your Bag Closer Motor is of continuous Rating, which means that it can run without stopping for long time, but as far as possible it should not be run for long periods of time continuously. It is made for start and stop operations only, such as those required by bag closing. Careful usage & few minutes of rest every half hour will increase motor life.

Carbon Brushes should be inspected at regular intervals so that wear can be detected, and replaced before they are about 1/8" in length. To remove brushes, take out two screws from each side of motor, when replacing carbon brush, be sure it is replaced at the same axial position as removed. If it isn't, excessive sparking and loss of power will result. New carbon brushes are furnished with machine and can be purchased from us at any time (Part No. D1-143). Before replacing check if original carbon brushes were Square or Round, and replace accordingly.

No motor will operate properly unless the bearings are kept well lubricated. Ball bearings are packed with grease sufficient for a period of one to two years, depending on the service given to the motor and temperature of the room in which it operates. 

To refill, remove the end caps covering the bearing and clean out the old grease before putting in the new. If the ball bearing is removed for washing in gasoline, the built-in grease seal should be facing towards the motor interior when replaced. Use only well known make of Sodium Base Ball Bearing Grease.

Top...

 
 
 
Contact Us | About Us

Copyright Bagclosers.com All Rights Reserved