TLV Power Dyne P46SRN Manuel D'installation page 12

Problem
Valve closure is obstructed by scale, etc.
Steam leakage
or blowing
Disc or valve seat is worn
(from valve
Air vent ring (bimetal) or disc holder ring is
seat)
broken, obstructing valve closure
Back pressure exceeds allowable value
Trap is being used below minimum operating
pressure
Disc is sticking to top of cover (due to oil, etc.)
Foreign matter or oil film on disc or valve seat
Valve
chattering
Scratches on disc or valve seat
(Leakage)
Disc or valve seat is worn
Bypass valve is damaged or open
Leakage from a
location other
Cover is loose or module gaskets are
than valve seat
damaged
(via discharge,
Cover is loose or sealing surface between cover
or from
and valve seat is damaged
product body)
Inlet and discharge channels may be
connected, due to erosion
Screen holder is loose or screen holder
gasket is damaged
NOTE: When replacing parts with new, use the parts list on page 5 for reference, and replace with
parts from the appropriate kit. Please note that replacement parts are only available as part of a
replacement parts kit.
10. Optional Blowdown Valve BD2
The BD2 Blowdown Valve, installed in place of the screen holder, uses internal pressure to blow
out condensate/steam, dirt and scale to the atmosphere.
CAUTION
• When disassembling or removing the product, wait until the internal pressure equals
atmospheric pressure and the surface of the product has cooled to room temperature.
• Do not tighten the BD2 valve or the BD2 valve seat in excess of the appropriate tightening
torque. Over-tightening may cause breakage to threaded portions, which may cause burns,
other injuries or damage.
10.1 Reassembly of Blowdown Valve
1. Clean the trap, BD2 threads, and sealing surfaces, and apply a small amount of anti-seize.
2. Replace gasket.
3. Carefully place the gasket over the threaded portion, and position carefully so that it does not
become off-center.
4. Fasten to the steam trap with the proper torque.
Reassembly Type
BD2
Cause
• Installation, inspection, maintenance, repairs, disassembly, adjustment
and valve opening/closing should be carried out only by trained
maintenance personnel.
Coat with
Anti-Seize
Torque (T) and Distance Across Flats (D)
̶ 11 ̶
Remedy
Clean or replace screen
Replace worn parts
Replace air vent ring or disc
holder ring
Use within pressure range
Use within pressure range
Clean
Clean
Replace disc or valve seat
Replace disc or valve seat
Replace or close bypass valve
Tighten cover or replace
module gaskets
Tighten or replace cover, or
replace valve seat
Replace trap (study trap
capacity)
Tighten screen holder or
replace screen holder gasket
(T): 30 N m (22 lbf
·
①
/
(D): 17 mm ( ")
21
32
(T): 100 N m (73 lbf
·
②
(D): 30 mm (1 / ")
3
16
ft)
·
ft)
·