If you are using the thermowell for a 27L or 30L FermZilla then use a pipe cutter to cut the
thermowell down to 33cm in length.
Step 1 – Scoring the metal for a 55L FermZilla Conical or 60L FermZilla All Rounder
1.
Measure 57cm from the closed end of the Thermowell and make a mark using a permanent
marker at the 57cm mark. There should be 3cm of Thermowell above this mark which
prevents the Thermowell falling into the FermZilla if you accidentally bump it or push it too
far into the duotight Fitting.
If you are using the Thermowell for a 27L or 30L FermZilla then make a mark and cut at 30cm
from the closed end and follow the same procedure.
2.
) make a score mark at this line. This can be done by hand
tightening the pipe cutter onto the mark and then rotating the cutter two full rotations.
Then hand-tighten again on the mark and perform another two full rotations. (The number
of rotations required is dependent on your strength)
Step 2 – Drilling a hole in the FermZilla lid
1.
Secure the FermZilla lid using a vice or vice grips. You will
need the lid to be held tight as it will require a large amount
of force to drill the hole in the lid.
2.
From the underside of the lid cut out a 12mm guide hole
using a 4-22mm self-starting HSS Stepped Drill Bit (Part
).
3.
Then from the outside cut out a 14mm hole using the 12mm
hole as a guide.
4.
You will then need to cut out a groove on the outside of the
lid to sit the o-ring of the duotight bulkhead fitting in. To do
this use the stepped drill bit to cut a 16mm groove (you
should just touch the 16mm step and only cut out a small
groove). Be careful not to cut this groove too deep, it needs
to be deep enough to just seat the o-ring. If you cut it too
deep it will no longer seal.
NOTE: When you seat the duotight fitting into this groove on the
outside of the lid, the o-ring on the duotight fitting should not be
visible.
