Following are recommended tips for troubleshooting Doboy B-550 Continuous Band Sealer problems. You will also find a list of part numbers and descriptions for commonly used parts.
Area of Machine |
Advice / Technique |
One Heat Element Does Not Get Hot (Applies to B-550) |
Heating Element wires may be loose or element is burned out. Check connections at temperature controller. If both are tight, disconnect and check for continuity across heat element wires. Solution: If no continuity, replace Heater Harness Assembly. |
Neither Heat Element Gets Hot (Applies to B-550) |
Temperature controller may be broken. Solution: Refer to Temperature controller manual and replace if necessary. |
General Machine Set-up: (Applies to Doboy B-550) |
We will gladly try to talk you through proper set-up of your machine - Call us! |
Problem | Possible Cause & Solution |
Can't Access Settings in Watlow EZ ZONE Temperature Controller (Applies to Doboy B-550) |
To access settings in the Watlow EZ ZONE Temperature Controller, the first step is to press and hold the Up and Down arrow keys (▲ | ▼), simultaneously, for six seconds until the controller says "A1 SEt". If this doesn't work, try the following: Possible Cause: Controller has lock-out setting to prevent all parameters from being changed except temperature set-point. It's likely this lock-out setting is engaged. Solution: Press and hold the Infinity Button (∞) and the Green Button for six seconds until you see "CUSt FCty" on the display. Then, press ▼ until you see "LoC FCty" Press the Green Button - "3 LoC.o" - change the "3" to a "2" Press the Green Button - "2 rLoC" - change the "2" to a "5" Press the Green Button - "2 SLoC" - change the "2" to a "5" Press the Infinity Button (∞) two (2) times to return to the Main Screen. You should now be able to access the setting screens by pressing the (▲ | ▼), simultaneously, for six seconds. After you have made your desired setting changes, repeat the above process to return the "2,5,5" settings you made above to "3,2,2," to relock the controller. |
One Heat Element Does Not Get Hot (Applies to B-550) |
Possible Cause: Heating Element wires may be loose or element is burned out. Check connections at temperature controller. If both are tight, disconnect and check for continuity across heat element wires. Solution: If no continuity, replace Heater Harness Assembly. |
Neither Heat Element Gets Hot (in a pair of two) (Applies to CBS-D) |
Possible Cause: Temperature controller may be broken. Solution: Refer to Temperature controller manual and replace if necessary. |
"E-7" Error Code on Temperature Controller Display (Applies to CBS-D) |
Possible Cause: 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.) |
PROBLEM: Contact us (Applies to CBS-D) |
Contact us with your problems. We will post the solution here! Watch here for more Solutions, Tips, and Tricks! |
* Machine troubleshooting & repairs should only be attempted by a qualified mechanic or electrician. Power should always be disconnected prior to troubleshooting.
* Machine troubleshooting & repairs should only be attempted by a qualified mechanic or electrician. Power should always be disconnected prior to troubleshooting.
Parts for Doboy B-550 Series Machines | ||
Spare | Part # | Description |
10 * | 8-110-910-200 | Sealing Band - Teflon-coated (sold in sets of two) |
2 * | 8-110-627-793 | Heating Element (B-550) |
2 * | 603237 | Thermocouple Assembly with Grommet (B-550) |
8-110-927-395 | EZ-Zone Temperature Controller (programmed for bag closer) | |
8-110-620-822 | Solid State Relay with Cover & LED | |
401380 | Back-up Sleeve (Rubber Roller) - Replaced by #8-110-910-404 | |
8-110-910-404 | Assy Back-up Sleeve (Rubber Roller) - Replaces #401380 | |
364181 | Bearings [two (2) per each Compression Roller] | |
2 * | 372192 | Trimmer Blade (B-550 uses two, identical trimmer blades) |
401327 | Kit - Idler Pulley - Smooth (Replaces #472029) | |
401329 | Kit - Idler Pulley - 32-Teeth (Replaces #472030) | |
2 * | 8-110-627-803 | Fuse - 7 Amp |
1 * | 8-110-102-010 | Fuse - 5 Amp |
1* | 440644 | Fuse - 10 Amp |
2 * | 401002 | Spring - Compression |
4 * | 401276 | Belt Guide - Stationary |
4 * | 401275 | Belt Guide - Moveable Set |
8-110-910-444 | Belt - Carrier | |
401179 | Spring - Compression | |
8-110-968-298 | Lubricant - High-Temp - provides oxidation barrier for heater elements |
NOTE: A * in the "Spare" column denotes a part that is recommended as a common spare part for this machine. If a number is listed, that quantity is typically included in the New Machine Spare Parts Kit Option available when ordering a new machine. Trimmer and Coder spare part components with a quantity and * are included only with the respective Trimmer and Coder New Machine Spare Parts Kit Options. (Spare Parts Kit contents are subject to change without notice.)
Call Toll-Free with your Doboy Parts Order 1-800-785-6785