Bestobell Steam Total Trap 2 - Manual (Page 2)

2. The disc trap can be cleaned without disassembly.
Once the system is shutdown and the trap is cool
to the touch, remove the flush plug above the inlet
hub with a 1/4” Allen wrench. Open the freeblow
valve and close all other valves. Flush the disc trap
using high pressure water in the reverse direction
by connecting the water supply to the vent port and
flushing out the flush port plug. The disc trap may
also be flushed with high pressure air (not to exceed
200 psig). Apply Grafoil tape and reinstall flush plug
(refer to torque values below).
3. If the disc trap must be disassembled, see the
Disc Trap Disassembly Procedure below. Dirt and
deposits can cause erratic operation. If the disc
trap cannot be fully cleaned via flushing, the disc
trap cap, disc and cartridge can be removed for
inspection, and sealing surfaces can be wiped with
a cleaning solvent. Periodic cleaning of the disc and
cartridge will facilitate trouble-free performance. DO
NOT USE ABRASIVES / CORROSIVE MEDIA FOR
CLEANING. If the disc surface is scratched or worn,
replace with a new factory-lapped disc. Only the
disc and cartridge seat are subject to wear. Both
the disc and cartridge can be replaced if neces-
sary; however, a slight disc and seat wear can be
corrected by resurfacing on a lap plate in a straight
line, back and forth direction, for 20 - 30 seconds.
4. If large quantities of air and other non-condensable
gases are suspected at equipment start-up, venting
via the freeblow valve may reduce the time it takes
for the disc trap to achieve steady state operation.
5. Periodically use the strainer blowdown valve to blow
down the internal strainer of debris. Routine blow-
down will prevent dirt and debris from entering the
disc trap.
6. The Total Trap has been properly assembled, cor-
rect valve torques applied, hydro- and leak-tested
at high pressures, so no steam leakage should be
observed. If steam leakage is detected around
the valve packing, use a 7/8” open end wrench to
loosen the packing lock-nut, make minor tightening
adjustments of the packing until leakage ceases,
and then retighten the packing lock-nut. Similarly, if
steam leakage is detected around the valve bonnet
seating surfaces with the body, use a 1 1/8” open
end wrench to make minor tightening adjustments
to the valve bonnets until steam leakage ceases.
Disc Trap Disassembly Procedure
1. Carefully and slowly remove the disc trap cap, en-
suring the disc is not lost during removal of the cap.
2. Remove the cap and disc and set aside in a clean
area.
3. USING ONLY YOUR HANDS, remove the internal
cartridge, being very careful to not lose or damage
the o-rings which seal the bottom cartridge cavities
to the raised sealing surfaces at the bottom of the
disc trap port, or the outer o-ring used to provide
sealing with the cap. Place the cartridge and o-rings
in a clean area. The o-rings may be left attached
to the cartridge. DO NOT USE PLIERS OR ANY
OTHER TOOLS AS THEY MAY DAMAGE THE SEAL-
ING SURFACES OF THE DISC TRAP PARTS OR
INTERNAL SURFACES OF THE TRAP.
Disc Trap Reassembly Procedure
1. Carefully blow the disc trap port out of any debris
using low pressure air. Clean disc trap parts as de-
scribed in the maintenance section above.
2. Apply a small coating of Dow Corning 111 Valve
Lubricant and Sealant Compound to the cartridge
o-rings and insert into their respective grooves on
the bottom of the disc trap cartridge, if necessary,
ensuring they are seated correctly. The purpose of
this compound is to ensure the o-rings are lubricat-
ed and remain in their grooves when the cartridge is
turned upside down and inserted into the disc trap
port in the trap body.
3. USING ONLY YOUR HANDS, carefully and slowly
insert the cartridge into the disc trap port in the trap
body ensuring the o-rings remain in place on the
bottom of the cartridge. DO NOT USE PLIERS OR
ANY OTHER TOOLS AS THESE MAY DAMAGE THE
SEALING SURFACES OF THE DISC TRAP PARTS
OR INTERNAL SURFACES OF THE TRAP.
4. Center disc on top of cartridge, groove side down.
5. Ensure the surface area around the disc trap port is
clean of debris, lubricate the cap threads with Loc-
tite Silver Grade Anti-Seize Compound, and care-
fully screw into place over the disc and cartridge.
6. Tighten the cap until firmly seated to the torque
value listed in the table below. DO NOT OVER-
TIGHTEN.
7. Pick up the trap with two hands and lightly shake,
listening for the disc to rattle around inside the disc
trap. This does not harm any components, and
ensures the disc was not bound up on installation of
the cap.