
– 6 –
2.6 Installation of clean water faucet (Fig. 5)
The faucet should be positioned
with aesthetics, function, and
convenience in mind. An ample
at area is required for the faucet
base so that it can be drawn down
tight. The space under the sink
below where the faucet will be
mounted must be clear of any
obstructions.
Some conditions may eliminate the
need to drill a hole in the sink such
as a faucet previously installed in
the sink, a hole covered by a chrome
hole cover, or an unused spray
handle. If any of these situations are
present, you may mount the faucet
in one of these holes.
The sink drilling process is not
complicated, but requires a certain
amount of caution and forethought.
Porcelain sinks can be chipped if
care is not exercised when drilling
the hole for the faucet.
[NOTE: This procedure is for the non air gap faucet provided.]
2.7 Porcelain/Enamel over Steel or Cast Iron Sinks
Using a small diameter carbide tipped drill, drill a pilot hole completely through
the porcelain and the material underneath. Remove any metal chips that fall into
the sink to prevent rust stains. Place the spring-loaded porcelain cutter bit in to the
drill chuck. Make sure the pilot guide is inserted tightly. Insert the pilot guide onto
the pilot hole. Push down gently on the drill motor to apply light pressure to the
porcelain surface. Start the drill motor, turning as slowly as possible. After the initial
cut has started, motor speed may be gradually increased. The cut may require three
to four minutes to complete. Going faster could result in excessive chipping. Be sure
a complete ring has been cut through the porcelain to the metal underneath.
Place the nish hole saw into the drill chuck. Make sure the pilot guide is inserted
tightly. Insert the pilot guide into the pilot hole. Begin cut using a slow speed and
light pressure until the porcelain has been penetrated to the material underneath.
Remove the saw from the hole and clean all debris from the porcelain surface.
Reinsert saw into the hole and cut through the remaining material.
Figure 5
Step 1.
Pilot Drill
Step 2.
Spring loaded
porcelain saw
(Relton cutter)
Step 3.
Finish hole saw