9. Troubleshooting
If the expected performance is unachievable after installation of the steam trap, read the "Proper
Installation" and "Piping Arrangement" chapters again, and check the following table for the
appropriate corrective measures to be taken.
No
condensate is
discharged
(blocked)
or discharge
is poor
X-element is stuck to the valve seat
Screen is clogged with rust or scale
Clean
Steam
leakage or
blow-off
Valve closure is obstructed by rust, etc
Clean (inspect screen as well)
Leakage from
other location
Severe vibration of trap
Cover is loose or gaskets are worn or
damaged
Tighten cover or replace gasket
Replace valve seat or cover
Reinforce trap piping supports
X-element is worn or damaged
Replace X-element
Clean
Valve seat is clogged
Clean
Trap operating pressure exceeds
maximum specified operating pressure
Study inlet pressure
Differential pressure is insufficient
Study inlet / outlet pressure
Cause
Remedy
Problem
Valve seat is worn or damaged
Correct the installation
Improper installation
NOTE: When replacing parts with new, use the parts list on page 7 for reference, and replace with
parts from the Maintenance Kit or Repair Kit.
10.1 Reassembly of Blowdown Valve
10. Optional Blowdown Valve BD2
Reassembly
• Installation, inspection, maintenance, repairs, disassembly, adjustment and valve
opening/closing should be carried out only by trained maintenance personnel.
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.
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.
BD2
Coat with
Anti-Seize
Torque (T) and Distance Across Flats (D)
32
21
/
(T): 30 N
·
m (22 lbf
·
ft)
(D): 17 mm ( ")
8
7
/
(T): 60 N
·
m (43 lbf
·
ft)
(D): 22 mm ( ")
②
①
②
①
― 13 ―
English
