BaggingGuys.com Header Logo
Packaging  and  Material  Handling  Equipment  for  EVERY  INDUSTRY!

Troubleshooting Tips and Part # Information

BOSCH Doboy CBS-D / Doboy CBS-D Continuous Band Bag Sealers

Following are recommended tips for troubleshooting Doboy CBS-D Continuous Band Sealer problems.  You will also find a list of part numbers and descriptions for commonly used parts.

visual graphic divider

Preventative Maintenance & Proper Use Tips*

Area of Machine

Advice / Technique

General Machine Set-up:

(Applies to CBS-D)

We will gladly try to talk you through proper set-up of your machine - Call us!

visual graphic divider

Troubleshooting Tips & Tricks*

Problem Possible Cause & Solution

Sealer will not Operate

(Applies to 1997 & 1998 CBS-Ds)

Even though fuses are OK and power is connected to machine (i.e. neither drive motor nor cooling fan will turn on.)

Possible Cause: Loose Set Screw on Rotary Safety Interlock: Check set screw on safety interlock (for '97 and '98 machines). The rotary interlock switch is sensitive and will not function if set screw connecting it to the Door Closer Arm becomes loose. This interlock was replaced with a standard magnetic switch on post-1998 machines.

Solution: Reposition switch shaft and tighten screw. Machine should stop when door is open & operate when door is closed.

One Heat Element Does Not Get Hot

(Applies to CBS-D)

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.)

Can't Access Settings in Watlow EZ ZONE Temperature Controller

(Applies to Doboy CBS-D with EZ ZONE controls)

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.

Motor will Not Operate

(Applies to CBS-D)

(or operates intermittently) and Fuses #1 & #2 Blow frequently. Motor controller may display odd message and/or no message.

Possible Cause: Short circuit in motor controller. Remove fuses 1 & 2. Check resistance across terminals 7 & 8. Resistance should be high. If resistance is 0, then there is a short in the motor controller. Also, should have 8-20 ohm resistance across terminals 10 & 11, 10 & 12, and 11 & 12, otherwise there is likely a short circuit in the motor controller.

Solution: Replace motor controller module.

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.

visual graphic divider
Please see your factory instruction manual for additional troubleshooting tips.
visual graphic divider

Common Replacement & Wear Parts (available at www.DoboyParts.com)

Parts for CBS-D Series Machines
Spare Part # Description
8 * 401095 Sealing Band - Teflon Coated Fiberglass (2 / machine)
8 * 472278 Sealing Band - Slider Zipper - Teflon Coated Fiberglass (2 / machine)
2 * 396186 Heating Harness Assembly (i.e. Heat Element with Quick Disconnect [QD])
  401162 Heat Element with Embedded Thermocouple (requires QD install, separate)
  394869 Heat Element (Long Leads with Thermocouple) [for NEMA 4 machines]
  383322 Heat Element (Long Leads but NO Thermocouple) [for NEMA 4 machines]
  370782 Temperature Controller - Watlow 935 (disc. use 8-110-915-401SPAR)
  489732 Temperature Controller - Watlow SD-31 (disc. use 8-110-620-040)
  631.035708 Temperature Controller - Watlow SD-31 (discontinued use 8-110-620-040)
8-110-620-040 Temperature Controller - Watlow SD-31
  8-100-915-401SPAR Temperature Controller - Watlow EZ-ZONE
  401284 Bag Carrier Belt
  401275 Moveable Belt Guide
  401276 Stationary Belt Guide
  401179 Compression Spring - for Carrier Belt Guides
1 * 401327 Idler Pulley - Smooth
1 * 401329 Idler Pulley - 32T
  401380 Back-up Sleeve (i.e. Rubber Compression Roller)
  364181 Bearings for [both] Compression Rollers
4 * 286763 Fuse - 6 Amp
2 * 292414 Fuse - 1 Amp
2 * 292413 Fuse - 7 Amp
1 * 299704 Relay - Solid State (obsolete - see: 631-042799)
  631.042799 Solid State Relay with Cover & LED (replaces 299704)
  401177 Drive Motor (obsolete - replaced with 8-110-621-328)
  631.024254 Drive Motor (obsolete - replaced with 8-110-621-328)
  8-110-621-3285 Drive Motor with Male Cable Assembly
  031.020078 Cable w/ Disconnect (for installing 8-110-321-3285 Motor on older sealers)
  401175 40:1 Gear Reducer - for 300-500 IPM Speed Range
     
* 372192 Trimmer Blade - for Powered Older Model Trimmers
2 * 472048 Trimmer Blade (Upper) - for newer DRD Powered Trimmer
2 * 489020 Trimmer Blade (Lower) - for newer DRD Powered Trimmer
2 * 472072 Trimmer Scrap Removal Belt - for newer DRD Powered Trimmer
2 * 472073 Trimmer Drive Belt - for newer DRD Powered Trimmer
     
1 * 401224 Emboss Coder Back-up Wheel
1 * 401232 Emboss & Markem Coder - Type Wheel Drive Knob
4 * 244821 Emboss & Markem Coder - Rubber Type Stop
1 * 419668 Emboss Coder - Type Wheel Shaft
1 * 252950 Markem Coder (M-1296) - Thermostat
2 * 462425 Markem Coder (M-1296) - Heat Element
12 * 230436 Markem Coder - Ink Roll - Black
2 * 372356 Markem Coder - Ink Roll Arbor
     
215085 Watlube Heat Release - provides barrier to oxidation for heat 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.)

visual graphic divider