Avery 7112 HF user manual Trouble Shooting, Symptoms Probable Cause Corrective Action

Trouble Shooting

Symptoms	Probable Cause	Corrective Action
Timer does not move but	Hold Switch turned on.	Hold Switch should be turned off.
press operates
	Defective timer.	Replace timer.
No heat / no movements	Bad fuse.	Check and / or replace fuse.
	No power.	Check power to its source.

Timer moves / heat works	Lack of air pressure
No movement	Binding cylinder
	Bad 4-way valve

Check main airline.

Disconnect main air line, attempt to move cylinder by hand, loosen air line from 4-way valve to TOP of cylinder; operate machine. If not, replace valve. If air escapes, tighten and check line to the BOTTOM of cylinder.

No heat / no indicator light,	No power	Check wiring
no meter indicator
No heat / no indicator light.	Bad probe	Replace probe.
Meter reads +50
Heat out of control	Unit malfunctions.	Replace Unit
	Probe shorted.	Replace probe.
Heat working, meter not in	Error in manual reset control	Reset according to Athens Booklet.
the green band
Air leak at 4-way valve	Internal leak in cylinder	Replace or rebuild cylinder
exhaust
	Jammed 4-way valve	Replace 4-way valve
Timer will not reset	Reset switch not functioning	Adjust or replace
Vacuum arm stays in the	a) Foot pedal not held down until	1) Hold down until timer hits zero
down position
	timer hits zero
	b) Hold Switch turned on	2) Hold Switch must be off during normal
		operation.
	c) Timer malfunction	3) Replace timer
	d) 4-way valve jammed	4) Replace 4-way valve
Vacuum arm stays in up	Reset Switch not functioning	Replace or adjust
position after cycle
Vacuum arm has no	Broken tension spring	Replace
tension
	Broken gear teeth

14 • Regular Maintenance Users Manual Electro-Sealer 7112 HF