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Troubleshooting Tips and Part # Information

Doboy B-500M Medical Band Sealer
Following are recommended tips for troubleshooting Doboy B-500M problems.  You will also find a list of part numbers and descriptions for commonly used parts.

Troubleshooting Tips & Tricks*
Problem Possible Cause & Solution
Oil is Discovered in Motor (applies primarily to B-500M Horizontal - Style C & Style D machinery) There is an oil seal between the motor and the gearbox.  While seals and journals are of high quality, the seal has a finite life.  Motors positioned with the gearbox above the motor (Style C&D Sealers) will eventually see some leakage of gearbox lubricant back into the motor as the seal wears out.  To prevent this occurrence, even in the long term, the gearboxes may be filled with grease rather than the standard gear lube when they are to be positioned vertically, gearbox above motor.  The grease is too heavy to migrate around a worn seal or journal.

Operator Interface Panel Indicates:

 X00□□□□

 X10□□□□

 X20□□□□

 X30□□□□

 Someone has inadvertently pressed the STAT key or the program has been lost.  Insure that air pressure is attached to the machine and heat settings are correct and in-range then press the MSG button.  If this does not restore the screen to show normal operating details, the program may have been lost.  Contact us to schedule service of get a new copy of the program.
"E-7" error code displayed on Temperature controller  Thermocouple wires are loose or broken.  Check thermocouple wires at temperature controller.  Make sure connections are tight.  If they are and "E-7" error still appears, detach wires from temperature controller and check for continuity across thermocouple wires.

Solution: If no continuity, replace thermocouple (i.e. Heater Harness Assembly)

* Machine troubleshooting & repairs should only be attempted by a qualified mechanic or electrician.  Power should always be disconnected prior to troubleshooting.

Please see your factory instruction manual for additional troubleshooting tips.

Common Replacement & Wear Parts
Doboy Part # Description
281876 Sealing Band - Teflon Coated Fiberglass (two per machine)
452221 Heating Element w/ Thermocouple (B-500M)
372192 Trimmer Blade - for powered rotary trimmer models
383363 Gearmotor - Standard Speed Range - Machine Style A & D
441404 Gearmotor - Standard Speed Range - Machine Style B & C
441534 Gearmotor - 1000 IPM Speed Range - Machine Style A & D
441540 Gearmotor - 1000 IPM Speed Range - Machine Style B & C
215085 Watlube Heat Release - provides a barrier to oxidation of heater elements

Call Toll-Free with your Doboy Parts Order  1-800-785-6785

Can't find what you think you need?  Drop us an E-mail describing your application or fill out

our Information Request form.  We'll call you back to let you know what's right for you.
Phone Us: Main Office (717-764-6103) or Philadelphia Sales Office (267-218-0698)

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Last Updated: 03/06/2008