Inferno SFI-6000 User manual

Fig. 1 Sight Feed Indicator (SFI) Assembly
Thank you for choosing "INFERNO" products. Inferno
products are designed and constructed to give satisfactory
performance in a wide range of environmental and operat-
ing conditions. If the correct design and materials were
specified at the time of purchase, satisfactory service will
depend on reasonable care in the subsequent installation,
operation, and maintenance of the product.
INSTALLATION
To help ensure trouble-free operation of your sight feed
indicator (SFI), read this Instruction Manual carefully and
follow its recommendations. Failure to follow any instruc-
tion could possibly result in a malfunction of the gage or
glass breakage during service, which can cause property
damage or bodily injury.
Before installing the gage the following items should be
considered:
• Check for suitability of the SFI in service before
installing.
• Check chemical compatibility of process with materials
of SFI construction.
• Check maximum pressure and temperature of service
with ratings of the SFI (see Fig. 1). Do not exceed ratings
of the SFI in service.
Fig 2- SFI Pressure & Temperature Rating
OPERATION
A. Hydrostatic Test
We recommend a hydrostatic test on the gage assembly at
1.5 times the operating pressure whenever possible, espe-
cially in high pressure applications. The SFI is factory test-
ed to 1.5 times the rated pressure and does not need to be
re-tested at time of installation. However, if glasses and
seals have been replaced during maintenance, then the SFI
should be re-tested by the user.
CAUTION: DO NOT USE WRENCH ON GLAND
NUTS. If a leak develops during testing, do not use wrench
to tighten gland nuts. Wait until the pressure has been vent-
ed to atmosphere before attempting any work on the SFI.
Hand-tight the gland nuts. If it does not eliminate the leak,
disassemble the SFI and follow the maintenance procedure.
B. Starting Up
If a large temperature difference exists between the SFI and
process fluid, raise or lower the temperature slowly by
cracking the connecting valves open. Do not open the
valves all the way until the SFI is either fully warmed up or
cooled down. The glass used in the SFI is tempered borosil-
icate glass that can stand large temperature shocks. But the
amount is limited by other factors such as stresses imposed
during installation which reduces the glass resistance to
thermal shock.
INFERNO Installation Instruction: M991012 Rev B
Rev. Date:10-30-12
Replaces: 9-06
INSTALLATION / OPERATION / MAINTENANCE INSTRUCTION
6000# SIGHT FEED INDICATOR
GLAND NUT
Nozzle
Glass
MODEL SFI-6000

2
Installation Instruction: M991012 Rev B
Inferno Manufacturing Corporation
115 Ricou Street
Shreveport, Louisiana 71107
PH: [phone]
FAX: [phone]
Web Site: www.infernomfg.com
C. Shutting Down
Allow pressure and temperature in the SFI to reach ambi-
ent/atmospheric conditions slowly.
MAINTENANCE
CAUTION: Never perform any maintenance until the
SFI has been vented to the atmosphere, has equilibrated to
ambient temperature, and has been drained of all process
liquids/gases.
Fig. 3 SFI-6000 Assembly
A. Disassembly
See Fig. 2 for the SFI assembly. Loosen the gland nuts by
hand. Replacement "O" ring is size 2-021, material is
viton. Replacement cushion gasket is 1/32" compressed
non-asbestos material (see “Parts List” below for details).
Cushion gasket can protect glass from contact with metal.
Omission of cushion gasket will cause gland nut to scratch
top surface of glass and will cause glass breakage which
may result in severe damage to life and property.
Replacement glass should be free of scratches or chips that
may cause local stress concentration and lower the
strength of the glass in bending. The glass is available
through INFERNO. Do not substitute glass from other
sources. Original glass is tempered borosilicate (Pyrex).
Substitute glasses from other sources may not necessarily
be “high strength in tempered condiotion. For high pres-
sure operation the Inferno SFI must carry tempered glass
which is three times stronger than regular annealed glass.
B. Reassembly
Inspect "O" ring grooves to make sure that there are no
nicks or imperfections that could cause leakage. Blow off
all sanding dust or other debris from the body and gland
nuts and wipe all mating surfaces clean before re-assem-
bling. Take special care to see that no remains of old cush-
ion gasket are left sticking to the glass or the end cap.
See Fig. 2 for the SFI assembly. First insert "O" ring into
the groove on one side of the body. Then place the glass
carefully over top of the "O" ring. Install the cushion gas-
ket on top of the glass. Lubricate the threads of the gland
nut. Finally hand-tight the gland nut. Hand-tight is all
that is required. The gland nut will not loosen when the
body is under internal hydraulic pressure, in fact the nut
will become very stiff and hard to turn. Under no circum-
stance use wrench to tighten the gland nut. Glass is sub-
ject to breakage when wrench-tightened and capable of
causing severe damage to life and property.
Hydrotest to 1.5 times working pressure. Or gas test sub-
merged under water to check for bubbles indicating leak-
age.
CAUTION: Gas testing must be done with great precau-
tion because large amount of stored energy is present in
the SFI when pressurized with gas. A gas pressure check
should be done by specially trained personnel only.
C. Parts List- High Pressure 6000# SFI
11376: Hi Pressure Body v3, SA 479 T-316 CF stainless
steel.
11377: Hi Pressure Gland nut v3, SA 479 T-316 CF
stainless steel.
3261: Cushion gasket, non-asbestos, NBR binder
(K-4401), 1/32" thick.
10821: Glass, clear, borosilicate glass tempered, 3/4"
thick x 1-1/4" diameter.
4063: Nozzle, 1/8" ID tubing, T-316 stainless steel.
3255: "O" ring,Viton 90 durometer, Parker size 2-021.
Note: v3 parts shown above will not interchange with
earlier versions
Gland Nut
Body
"O" ring Name Plate
Glass
Cushion
Gasket
Nozzle- press-in