Troubleshooting Tips and Part # Information

1) Lack of Adequate / Uniform Heat:

1a) With the machine cold and the guards off, pre-heat the machine and check each heater bar as the machine heats to make sure both heater bars are getting hot, independently - it's possible that one of the heat elements (most likely the one on the side opposite the thermostat) is burned out.  If one bar does not get hot, there is either a loose connection or a bad heat element.

1b) For the same pouches you have been using, have you had to modify the thermostat setting recently?  If your thermostat is getting too old (typically 3-5 years old) it will sometimes prevent the elements from getting as hot as they originally did.

1c) If both elements are working, check the gap setting between the heater bars (See Bar Gap Adjustment Tip above.)  If the gap is too wide, it can prevent efficient heat transfer to the bag.

2) Lack of Adequate Seal Pressure - If both elements are working and your gap setting is appropriate, check your seal pressure.  Turn the set screw in front of the compression rollers clockwise to increase seal pressure and counter-clockwise to decrease seal pressure.

Over time, the rubber roller on the Hospital Sealer can become hardened and is unable to develop adequate / uniform pressure.  When this happens, you will need to replace the compression roller(s).

3) Seal Area Contamination - check bag for contamination (e.g. product residue, dust, grease, oil, etc.)

Over time, heat from the sealing process and plain old age will cause degradation of your Hospital Sealer's compression rollers. 

The Compression Rollers rotate and press on the heated film to make a secure seal.  Their design, a hard plastic roller in the back and a spring-loaded, rubber roller on the front insure that uniform pressure is applied to the package and that a tight seal is made.

As the rollers wear out, their ability to make a uniform and reliable seal also deteriorates.  When they develop cracks, scratches,  or chips (on the rear, hard plastic roller), or flat spots and hardening (on the front-side, soft rubber roller) it's time to replace the rollers.

See the photos to the left to determine if your rollers are showing signs of cracks, hardening, or wear.

When the Compression Rollers have worn to the point that they need replacement, it's also usually time to replace the bearings that support the compression roller drive shafts - and not a bad idea to replace the Idler Pulley Bearings, as well.

It is not recommended that users attempt to remove and replace the Compression Rollers because replacing them properly is difficult and critical to proper sealer operation.  If you determine that your Hospital Sealer has worn, cracked, or damaged Compression Rollers, please contact BaggingGuys about our Ship-In Service for Doboy Portable Sealers!

1) Bad Motor Switch - Check your motor On/Off switch to make sure power is being supplied to the motor when the switch is in the Motor ON position.  If not, replace the switch (Part # 950644).

2) Motor Fan Interference - The cooling fan on the Hospital Sealer's motor is friction-fit onto the motor drive shaft.  If the fan blade is accidentally pushed too far up or too far down the shaft, it can interfere with the sealer guard or the motor itself, respectively. 

With the machine unplugged, carefully (and gently) push the fan blade up or down to insure that it doesn't interfere with the sealer's guarding or with the motor.  Note: when the motor switches on, the fan and shaft tend to rise a bit.  So, insure that you allow for this movement when positioning the fan blade.

3) Motor Burned Out - If your switch is operable and your fan blade is not interfering with anything, it's likely that your motor is burned out or the gear reducer is seized.  The gear reducer is an integrated part of the motor, so you will need to replace the whole assembly.

Contact us with your problems. We will post the solution here! Watch here for more solutions!

If your Doughboy / Doboy sealer needs parts we can quote the parts.  However, unless you are an experienced mechanic who understands the operational principles of these sealers (e.g. why is there a fixed side and a spring-loaded side of the machine?) it's probably best that you do not attempt to service these machines yourself. 

BaggingGuys recommends you consider shipping your machine to us for repair evaluation and service.

Replacement and proper realignment of the power transmission and heating components on this sealer are critical and can be difficult if you do not have regular experience doing it.