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Check to make sure that the pipes connected to the trap have been installed properly.
1. Is the pipe diameter suitable?
2. Has the trap been installed within the allowable inclination and with the arrow on the body
pointing in the direction of flow?
3. Has sufficient space been secured for maintenance?
4. Have maintenance valves been installed at the inlet and outlet? If the outlet is subject to
back pressure, has a check valve been installed?
5. Is the inlet pipe as short as possible, with as few bends as possible, and installed so that the
condensate will flow naturally down into the trap?
6. Has the piping work been done with the proper methods, as shown in the table on page 8?
6. Inspection and Maintenance
Operational inspections should be performed at least twice per year, or as called for by trap
operating conditions. Steam trap failure may result in temperature drop in the equipment, poor
product quality or losses due to steam leakage.
WARNING
CAUTION
Body, Cover
Gaskets
X-element
Screen
Float
Air Vent Valve Seat, Orifice
Model
Cover Bolt 9
Orifice 4
SJ _ FNX
Screen
SJ _ FVX, SJ3V-X
Holder 7
Drain Plug 10
X-element Cover 19
Air Vent Valve Seat 16
Orifice Plug 20
* Indicates torque values with a sealing tape wrapped 3 – 3.5 times around the threads of the
plug or drain plug
If drawings or other special documentation were supplied for the product, any torque given there
takes precedence over values shown here.
NEVER apply direct heat to the float. The float may explode due to
increased internal pressure, causing accidents leading to serious injury or
property and equipment damage.
• Installation, inspection, maintenance, repairs, disassembly, adjustment
and valve opening/closing should be carried out only by trained
maintenance personnel.
• Before attempting to open the trap, close the inlet and outlet isolation
valves and wait until the trap has cooled completely. Failure to do so
may result in burns.
• Be sure to use the proper components and NEVER attempt to modify
the product.
Parts Inspection Procedure
Check inside for damage, dirt, grease, oil film, rust or scale
Check for warping or damage
Check for damage
Check for clogging, corrosion or damage
Check for deformation, damage, oil film or water inside
Check for rust, scale, oil film, wear or damage
Tightening Torques and Distance Across Flats
SJ3FNX
SJ3FVX, SJ3V-X
N
mm
m
•
40
13
40
17
140
24
140
38
30*
12
140
32
35
19
140
38
SJ5FNX
SJ6FNX
SJ5FVX
SJ6FVX
N
mm
N
m
m
•
•
60
17
90
50
19
120
24
140
400
140
38
30*
12
30*
140
32
140
19
35
35
140
38
400
SJ7FNX
SJ7FVX
mm
mm
N
m
•
22
100
24
30
120
30
50
400
50
12
30*
12
32
140
32
19
35
19
50
400
50
1 N m ≈ 10 kg cm
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