Bestobell Steam Total Trap 3HP - 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 ® 3HP has been properly assembled,
correct valve torques applied, hydro- and leak-test-
ed 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. Using a 3/8" Allen wrench, evenly loosen the disc
trap cap bolts in a criss-cross pattern and remove.
2. DO NOT ROTATE THE CAP BACK AND FORTH. Us-
ing a small, thin tipped, straight screw driver, insert
and lightly and evenly pry alternate sides up,lifting
approximately the same amount each time first one
set of alternate sides, then the other. When the gap
between the cap and trap body is big enough, a
large screw driver may then be used in the same
manner. After a small amount of lifting in this fash-
ion the cap will be able to be lifted straight up and
removed by hand.
3. Remove the cap flexitallic seal and set the cap and
seal aside.
4. Remove the disc.
5. USING ONLY YOUR HANDS, remove the internal
cartridge, being very careful to not lose or damage
the metal seal rings which seal the bottom cartridge
cavities to the raised sealing surfaces at the bot-
tom of the disc trap port. Remove the seal rings and
set aside. DO NOT USE PLIERS OR ANY OTHER
TOOLS AS THESE MAY DAMAGE THE SEALING
SURFACES OF THE DISC TRAP PARTS OR INTER-
NAL 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
metal seal rings and insert into their respective
grooves on the bottom of the disc trap cartridge en-
suring they are seated correctly. The purpose of this
compound is to ensure the seal rings remain in their
grooves when the cartridge is turned upside 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 metal seal rings remain in place
on the bottom of the cartridge. DO NOT USE PLI-
ERS OR ANY OTHER TOOLS AS THESE MAY DAM-
AGE 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 and place the disc trap cap flexital-
lic seal on the spot faced ring surface around the
disc trap port, centering the inside diameter around
the port.
6. Apply Loctite Silver Grade Anti-Seize Compound to
the outside face of the portion of the disc trap cap
cylinder that will be inserted into the disc trap port
on the trap body. This will aid in the cap smoothly
sliding down into the port when inserted.
7. Align the bolt holes, center the cap over the disc
trap port on the trap body, and slowly push straight
down on the cap, evenly, until it will not go further.
Ensure the cap is inserted all the way prior to insert-
ing the disc trap cap bolts. Lightly tapping the top
of the disc trap cap with a rubber mallet is permis-
sible if necessary to ensure the cap is inserted and
seated fully in the port.