Aqua-Pure AP-RO5500 - Manual (Page 9)

Installation, Operation and Maintenance Manual
8
8. Make the Faucet Mounting Hole
Before starting the hole making operation, always check below the sink so that nothing interferes with
mounting the faucet such as reinforcing ribs, support brackets or cabinet construction.
Stainless Steel Sink, faucet with or without air gap module.
Recommended Tools:
• Center punch
• Variable speed drill and high speed drill bits
• Greenlee chassis punch 7/8” hole size
(alternate 9/16” size may be used for faucets without air gap module)
• Protective gloves
Procedure:
A) Center punch a small indent at the desired faucet location.
B) Slowly drill the required pilot hole for the chassis punch.
C) Set up the chassis punch per instructions and tighten nut to cut the desired hole size.
D) Clean up sharp edges with a fi le if necessary.
Porcelain/Enamel/Ceramic on sheet metal or cast iron base;
faucet with or without air gap module:
Recommended Tools:
• Variable speed drill
• Relton porcelain cutter set 7/8” size
(alternate 9/16” porcelain bit may be used for faucets without air gap module)
• Plumbers putty
Procedure:
It is important to understand what is involved in this procedure. First, the glassy layer of porcelain must be
penetrated through to the base metal. Second, a center disc of porcelain must be removed while protecting
the surrounding porcelain against chipping or fracturing. Third, the base metal must be drilled through to
complete the hole.
A) Mark the center for the 7/8” hole.
B) Form a shallow putty dam around hole area and fi ll with enough water to lubricate carbide drill bit.
C) Carefully drill pilot hole through porcelain/enamel and base metal using carbide type pilot drill.
D) Insert pilot tip of spring loaded porcelain cutter into pilot hole.
E) Drill porcelain/enamel using spring loaded porcelain cutter, making certain a complete ring has been
cut through the porcelain/enamel to the base metal.
F) Change to the metal cutter. With slow speed and light pressure, cut away the inner porcelain/enamel
disc down to the base metal. Make certain that the cutter does not touch the outer rim of the cut por-
celain/enamel. Continue with this bit to cut through metal until sink has been completely penetrated.
To reduce the risk of eye injury while drilling counter-tops for faucet installation:
• Safety glasses MUST be worn during sink hole drilling operations.
• Always operate drill with light pressure at slow speed (300-400 rpm).
• When using a porcelain cutter, it is critical to take the precaution that it is always in a sharpened condition. Dull
cutters are known to chip sinks.
IMPORTANT NOTES
CAUTION