C
L
3
PREVENTIVE MAINTENANCE
TROUBLESHOOTING
SPECIFICATIONS
WHAT TO AVOID
1.
Use only the 2" wrench flats to install or remove the
unit. Refer to Figure 3. Use of any other surface could
change the calibration. The valve body is calibrated at
the factory and locked in place.
Periodic inspections are a necessary means to keep your Magnetrol level control in good working order. This control is a safety
device to protect the valuable equipment it serves. A systematic program of preventive maintenance should be implemented
when the control is placed into service. Based on utilizing a preventative maintenance program and observing the following sec-
tion on “what to avoid”, your Tuffy will provide reliable protection of your capital equipment for many years.
2.
NEVER attempt to make adjustments without reading
the instructions carefully. When in doubt, consult the
factory or your local representative.
3.
NEVER use in systems which have excess iron parti-
cles in the solution. The magnet at the counterweight
end of the float can attract the particles which could
cause the float rod to jam.
FAILURE TO SHUT OFF OR TURN ON INLET AIR
1.
Check float for full range of travel; clicking of mecha-
nism should be heard.
2.
If the complete Tuffy mechanism operates properly
when removed from service, check to be certain that
liquid is entering the storage tank or vessel. A valve
may be closed or a pipe line clogged.
3.
If the float is determined to be filled with liquid or is
collapsed, the entire level switch must be replaced. Do
not attempt to repair the float.
4.
The factory calibration setting should not require any
adjustment in the field. Check to see that the unit is
installed properly with the serial number tag posi-
tioned on the top of the unit. If the unit is still not oper-
ating correctly, please contact the factory.
NOTE: When in doubt about the condition or performance
of a control, please contact the factory for assistance.
Description
Specification
Max. design pressure
0,6 SG:
103 bar @
0
40°C
(1500 PSIG @ 100°F)
0,4 SG:
34 bar @
0
40°C
(
1
500 PSIG @ 100°F)
Max. process temperature
-40°C to 200°C (-40°F to 400°F)
Pneumatic switch supply pressure
Vacuum - max 13.8 bar (200 PSIG)
Max. leakage rate
14.16 l/h (0.5 SCFH)
Max. air flow
2.55 m
3
/h (1.5 SCFM)
Specific gravity
0.6 minimum or 0.4 minimum
Materials of construction
316/316 SS wetted components including ANSI B 31.3/NACE
Housing
316/316 L SST
Cage (optional)
Carbon steel or 316 / 316L stainless steel
Cage rating
103 bar @ 260°C (1500 PSIG @ 500°F)
Square flange (optional) rating
0
17 bar @ 204°C (
0
250 PSIG @ 400°F)
MECHANICAL SPECIFICATIONS
DIMENSIONAL SPECIFICATIONS in mm (inches)
329 (12.94)
76 (3) max.
nozzle length
2" NPT
1/4" NPT
outlet (C)
1/4" NPT
inlet (B)
1/4" NPT
inlet (A)
Switch Actuates
Rising Level
Falling Level
Switch Actuates
64 (2.5) Ø
19
(0.75)
95 (3.75)
float
minimum
clearance
226 (8.91) [Sp. Gr. 0.4 Min.]
Float Size = 51 (2) Ø x 130 (5.12) Long
202 (7.96) [Sp. Gr. 0.6 Min.]
Float Size = 51 (2) Ø x 116 (4.57) Long
