Troubleshooting Tips and Part # Information

Doboy HA-720 Hot Air Sealer

Following are recommended tips for troubleshooting Doboy HA-720 Hot Air Bag Sealer problems. You will also find a list of part numbers and descriptions for commonly used parts.

Preventative Maintenance & Proper Use Tips*

Area of Machine

Advice / Technique

One Heat Element Does Not Get Hot

(Applies to HA-720)

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 Element.

Neither Heat Element Gets Hot

(Applies to HA-720)

Temperature controller may be broken.

Solution: Refer to Temperature controller manual and replace if necessary.

General Machine Set-up:

(Applies to Doboy HA-720)

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

Troubleshooting Tips & Tricks*

Problem

Possible Cause & Solution

PROBLEM: Contact us

(Applies to Doboy HA-720)

* 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 (available at www.DoboyParts.com)

Parts for Doboy HA-720 Series Machines
Spare	Part #	Description
*	292723	Heating Element with Cable
*	273656	Thermocouple
	421732	Temperature Controller - Call with Serial Number
	252463	#40 Carrier Chain - Call with Serial Number
	507168	Carrier Chain Connector Link
	200622	Chain Pressure Bar - Fixed Side (Rear Side)
	247465	Chain Pressure Bar Set - Spring Side (Front Side)
	246641	Spring - Compression [Use two (2) with each Pressure Bar Set]
	244705	Chain Back-up
	244638	Chain Guide / Lubricator (Operator Side)
	063-45853	Idler Roller Assembly
	182129	Bearing - for Compression Roller
	257009	Assembly - Motor with Cord
	259060	Solid State Relay

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