ENGLISH
EN - 12
2.4 - DRILLING THE WALL
This operation should be carried out using the proper tools to facilitate your work and prevent excess damage
or disturbance to your client.
The best tools for drilling large holes in walls are special drills called core borers with very high twisting torque
and adjustable rotation speed depending on the diameter of the hole to be drilled.
Topreventthecreationoflargeamountsofdustandrubbleduetodrilling,thecoreborercanbettedwith
a vacuum system applied by means of suction cups to the drilling zone.
OurServiceDepartmentcangiveyouallnecessaryinformationtoenableyoutondthesedevices.
2.5 - ASSEMBLY OF THE AIR DUCTS AND EXTERNAL GRIDS
• Afterdrillingtheholes(withthecoredrill),inserttheplasticsheet(7)suppliedwiththeairconditioner
(g.7)insidethem.
Thesheetsmustbe65mmshorterthanthelengthofthewall.
• Rollthesheet(7)andinsertitintothehole,payingattentiontothesplicingline,which must always
face upwards. (g.8).
Useanordinarycutterfortheforegoingoperation(g.8).
To position the external grids, proceed as follows:
a. Check that the plastic sheet (7) is correctly inserted in the hole.
b. Fixthetwoanges(6)using2pegshavingadiameterof6mmandcheckthatthetwoxingholesare
horizontal(g.9-10-11).
c. Fitthesmalleyeletofthespring,withthelongstem,onthecappin(onbothcomponents)(g.14).
d. Insert the two caps (with spring), on the front part of the external grid, on its two housings, pulling until
itclicks(g.15)andcouplethetwochainstothelargeeyeletofthespring.
e. Using one hand, grip the two chains connected to the grid;
f. Bendtheexternalgridsback,grippingthemwithyourfreehandwheretheybend,andinsertyourngers
insidethesinglens(g.16).
g. Insert your arm into the pipe until the grid protrudes completely outwards.
h. Reopenthegrid,beingcarefultokeepyourngersinsidethens.
i. Turnthegriduntilthensarefullyhorizontalandtilteddownwards.
l. Pullthechain,tensioningthespring,andcouplethechainringtothepinoftheinnerangethrough
whichthepipespass(g.17).
m. Use hand shears to cut off any excess chain links.
Useexclusivelythesuppliedgrids(5),orgridswithlikecharacteristics.