10
INSTALL THE GAS LINES
A qualified plumber can install the delivery
piping up to and including the DISS Shut-Off
Valves by following the details below and
illustrations in this brochure.
Important:
The flowmeter systems are designed
and intended to be used with gas supply lines
installed using NFPA 99 guidelines. Medical
grade dry Nitrogen should be used as a “forming
gas” while soldering. To prevent oxidation
inside supply lines:
(a) Use type K or L, pre-cleaned, degreased,
capped copper tubing ONLY.
(b) Use 3/8” O.D. for Nitrous Oxide, use 1/2”
O.D. for Oxygen. DO NOT CHANGE
TUBING DIAMETERS!!
(c) All copper to copper joints are to be
made using a brazing alloy conforming to
AWS Classification BcuP-5 (see AWS
Std. A5.8). Flux shall not be used.
(d) After connecting all gas lines, shut off the
DISS shut-off valves and check the
system for leaks with dry Nitrogen per
NFPA 99, by performing a 150 PSI, 24
hour piping integrity test (5 PSI drop
allowed).
Important:
Prior to installation, turn OFF central
gas supply system and close all tank valves in
tank room. DISS Shut-off valves should be in
closed position throughout installation of
flowmeter.
The dental dealer is responsible for the final
connections to the flowmeter, the details of
flowmeter installation, checking for crossed-
lines, leak testing of connections to the
flowmeter, and basic flowmeter operation.
SWITCHING THE UNIVERSAL
CONNECTORS
Note:
Installations that require the connectors
on the bottom of the flowmeter will need the
connectors removed prior to mounting into the
cabinet or wall. After mounting the flowmeter,
the connectors will then be re-installed onto the
flowmeter in the bottom position.
1. Verify that the Universal DISS connections
for O
2
and N
2
O are in the desired location on
the flowmeter (back or bottom).
2. The Universal connections may be switched
from back to bottom or bottom to back.
Caution: Perform this procedure with the
flowmeter placed on a clean surface and be
careful to protect the exposed holes from
any possible entering debris.
3. Remove the O
2
plug (3/16” Allen Wrench)
and the Universal connection. Carefully
place the plug and connection on the clean
surface without allowing the sealing o’rings
to touch anything.
3.1. The o’rings are lightly lubricated with
Dow Corning High Vacuum Grease.
(This is the only approved lubricant.)
Caution: Do not add any other
lubrication to the o’rings.
Rear View of Flowmeter with
Connectors in the Back Position
Side View with
Back Connectors
