MEFE—Mitchell Engineering Food Equipment Pty Ltd
23 Storie Street Clontarf QLD 4019 Australia
www.mefe.com.au | [email protected]
Page 8
+617 3283 4536
Free AU 1800 669 006
7. Breakdown analysis and removal Continued
7
-
4 Breakdown and removal of heat seal device
Note:
1)
These instructions are only for reference. If any unconformity, please contact the technical department of our company.
2)
There are no additional instructions for special different mechanisms in the above
-
mentioned models.
3)
There is no additional notification for improved design
Breakdown
Reason
Solving method
Incapable of sealing
Heat
-
seal choice switch isn
’
t turned up to the suitable position
Heat
-
seal fuse is burned badly
Replace
Electrothermal belt is broken
Replace
Electrothermal belt is in short circuit
Sealing contractor has broken down
Solenoid valve of small gas cell doesn
’
t act
See Table 7
-
2
Heat
-
seal strip is jammed and can
’
t move
The lines at the sealing of the
package is not even
Electrothermal belt is loose
Tighten belt
The sealing of package is not flat
Heat
-
seal pressure isn
’
t enough
The cooling time is too short
Prolong time
The sealing isn't clean
The sealing isn
’
t firm
The sealing time isn
’
t suitable
Heat
-
seal voltage is selected unsuitably
The voltage of network changes
Heat
-
seal pressure isn
’
t enough:
(1) Too long aeration time makes the pressure in vacuum room too
high
Adjust See Table 7
-
2
(2) Heat
-
seal strip is jammed or can
’
t move flexibly.
(3) The valve of small gas cell can
’
t be turned on flexibly.
(4) Small gas cell or its pipeline leaks. The coating fibre of Teflon is
coked or broken.
Replace
The packing quality is bad
The package explodes when air is
drawn up to vacuum.
Bad reset of heat
-
seal strip and short distance cause non
-
smooth air
exhaust so as to produce pressure in package.
Make the reset flexible through
repair
