Digi HI-700HS, Service Manual, Page: 105 / 324

HI - 700HS service manual - 3 – routine maintenance
3 - 4 Issue 1 02/2020
Cleaning the thermal head - Signature & Classic labellers
Important – before carrying out this process, shut the machine down and turn the mains power off.
To release the applicator on a top labeller, un-
clip the latch on the front of the applicator for air
box and touch. The applicator can now hinge
away from the print head
area
Lift the print head by turning the black knob to gain access to the
thermal head surface.
It is important to keep the thermal head clean to maintain print
quality
Cleaning should be carried out as often as necessary. Certain
types of label leave more deposits than other types and regular
checks should be made to establish the cleaning cycle.
Initially cleaning should be carried out every 2000 - 3000 labels.
Once the machine is power off (including isolator), open the thermal head assembly as shown above.
Place a clean 'Safesleeve' (Digi part no. MM9 - 00034) on the blue 'Safewand' (Digi part no. MM9 - 0033) and
moisten with an approved cleaning fluid. It is recommended that Isopropyl alcohol be used.
If a safewand & sleeve is not available, use a suitable cleaning cloth.
Check this cleaning fluid is acceptable with the relevant authorities for food industry applications .
See the following page for example image of cleaning using the safesleeve and safewand
Signature labeller
For a labeller fitted with HS blow
applicator, loosen the black knob and
slide the Concave shoe assy away from
the thermal head.
Safesleeve Safewand
Use PPE when handling cleaning materials
When handling cleaning material, protective clothing
such as safety gloves and goggles should be worn.