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172-65461MA-03  (JH7.5R-B)    18  Nov  2020

 

13

 

Troubleshooting 

 

 

NEVER apply direct heat to the float. The float may explode due to 
increased internal pressure, causing accidents leading to serious injury 
or damage to property and equipment.

 

WARNING 

 

 

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. Disassembling or removing the 
product when it is hot or under pressure m ay lead to discharge of fluids, 
causing burns, other injuries or damage.

 

CAUTION 

 

When the product fails to operate properly, use the following table to locate the 
cause and remedy. 

Problem 

Cause 

Remedy 

No condensate is 
discharged 
(blocked) or 
discharge is poor 
 

The float is damaged or filled with 
condensate 

Replace with a new float 

The orifice opening, screen or piping are 
clogged with rust and scale 

Clean parts 

Air binding has occurred (air vent valve 
seat is blocked or bimetal plate is 
damaged) 

Clean valve seat or replace 
with a new bimetal unit* 

Steam-locking has occurred 

Perform a bypass blowdown or 
close the trap inlet valve and 
allow the trap to cool 

The trap operating pressure exceeds the 
maximum specified pressure, or whether 
there is insufficient pressure differential 
between the trap inlet and outlet 

Compare specifications and 
actual operating conditions 

Steam is 
discharged or leaks 
from the outlet 
(blowing) 
(steam leakage) 

Build-up on the seating surface of the 
orifice or rust and scale build-up beneath 
the float 

Clean parts 

Scratches on the orifice 

Replace with a new orifice 

The float is misshapen or has a build-up  Clean or replace with a new 

float 

Improper installation orientation 

Correct the installation 

Trap vibration 

Lengthen the inlet piping and 
fasten it securely 

The bimetal air vent valve surface and/or 
the air vent valve seat has a build-up or 
is scratched 

Clean or replace with a new 
bimetal and/or air vent valve 
seat 

The bimetal is damaged 

Replace with new bimetal 

Steam is leaking 
from a place other 
than the outlet 

Gasket deterioration or damage 

Replace with new gasket(s) 

Improper tightening torques were used 

Tighten to the proper torque 

Float frequently 
becomes damaged 

Water hammer has occurred 

Study and correct the piping 

*NOTE: When replacing parts with new, use the parts list for reference, and replace with parts 

from the Maintenance Kit, Repair Kit, etc. Please note that replacement parts are only 
available as part of a replacement parts kit. 

 

 

Содержание JH7.5R-B

Страница 1: ...172 65461MA 03 JH7 5R B 18 November 2020 Free Float Steam Trap JH7 5R B Copyright 2020 by TLV CO LTD All rights reserved ...

Страница 2: ...inge less and lever less free float to rapidly automatically and continuously discharge the inflowing condensate that is continuously generated inside the equipment thus preventing the accumulation of condensate and thereby improving the heat transfer efficiency of the equipment In addition the integral bimetal type automatic air vent allows for the rapid release of start up air and thereby reduce...

Страница 3: ...oses a threat of death or serious injury WARNING Indicates that there is a potential threat of death or serious injury CAUTION Indicates that there is a possibility of injury or equipment product damage WARNING NEVER apply direct heat to the float The float may explode due to increased internal pressure causing accidents leading to serious injury or damage to property and equipment CAUTION Install...

Страница 4: ... recommended components when repairing the product and NEVER attempt to modify the product in any way Failure to observe these precautions may result in damage to the product and burns or other injury due to malfunction or the discharge of fluids Use only under conditions in which no freeze up will occur Freezing may damage the product leading to fluid discharge which may cause burns or other inju...

Страница 5: ...to back pressure has a check valve TLV CK been installed 5 Is the inlet pipe as short as possible with as few bends as possible and installed so the liquid will flow naturally down into the trap 6 Has the piping work been done correctly as shown in the figures below Requirement Correct Incorrect Install catchpot with the proper diameter Diameter is too small Make sure the flow of condensate is not...

Страница 6: ...inflowing condensate causes the float to rise due to buoyancy opening the orifice B and allowing condensate to be discharged The air vent valve will remain closed throughout normal operation due to the high operating temperatures 3 Discharge of Large Quantities of Condensate Increases in the condensate inflow rate cause the condensate level in the trap to rise The float consequently rises and enla...

Страница 7: ...owable Temperature TMA Maximum Allowable Pressure Maximum Operating Temperature Nominal Diameter Maximum Differential Pressure Valve No Production Lot No Maximum allowable pressure PMA and maximum allowable temperature TMA are PRESSURE SHELL DESIGN CONDITIONS NOT OPERATING CONDITIONS Valve No is displayed for products with options This item is omitted from the nameplate when there are no options C...

Страница 8: ...ischarge of fluids CAUTION Installation inspection maintenance repairs disassembly adjustment and valve opening closing should be carried out only by trained maintenance personnel 1 Before installation be sure to remove all protective seals 2 Before installing the product open the inlet valve and blow out the piping to remove any piping scraps dirt and oil Close the inlet valve after blowdown 3 In...

Страница 9: ... losses due to steam leakage Normal Condensate is discharged continuously together with flash steam and the sound of flow can be heard If there is very little condensate there is almost no sound of flow Blocked Discharge Impossible No condensate is discharged The trap is quiet and makes no noise and the surface temperature of the trap is low Blowing Live steam continually flows from the outlet and...

Страница 10: ...faces Replace with a new gasket coat surfaces with anti seize Detaching Reattaching the Cover and its Components Part During Disassembly During Reassembly Cover Nut Remove with a socket wrench Consult the table of tightening torques and tighten to the proper torque Cover Remove by lifting up and off Make sure there are no pieces of the old gasket left on the sealing surfaces of the body and cover ...

Страница 11: ...e Orifice Plug Remove with a box wrench Consult the table of tightening torques and tighten to the proper torque Orifice Plug Gasket Remove the gasket and clean sealing surfaces Replace with a new gasket coat surfaces with anti seize Orifice Remove with a box wrench Consult the table of tightening torques and tighten to the proper torque Orifice Gasket Remove the gasket and clean sealing surfaces ...

Страница 12: ...r Retainer Screen Holder Screen Float Cover Gasket Cover Bolt Body Orifice Gasket Orifice Orifice Plug Gasket Orifice Plug Drain Plug Gasket Drain Plug Air Vent Valve Seat Air Vent Case Air Vent Guide Air Vent Valve Plug Air Vent Guide Gasket Bimetal Plate Snap Ring Air Vent Screen Snap Ring ...

Страница 13: ...e affixes the gasket tightly to the plug holder Check to make sure the gasket is not caught in the recesses of the threads 5 Hold the plug holder upside down to make sure that the anti seize makes the gasket stick to the plug holder even when the plug holder is held upside down 6 Screw the plug holder by hand into the product body while making sure that the gasket remains tightly affixed to the ce...

Страница 14: ...ool The trap operating pressure exceeds the maximum specified pressure or whether there is insufficient pressure differential between the trap inlet and outlet Compare specifications and actual operating conditions Steam is discharged or leaks from the outlet blowing steam leakage Build up on the seating surface of the orifice or rust and scale build up beneath the float Clean parts Scratches on t...

Страница 15: ...roper installation use handling etc by other than TLV CO LTD authorized service representatives 2 Malfunctions due to dirt scale rust etc 3 Malfunctions due to improper disassembly and reassembly or inadequate inspection and maintenance by other than TLV CO LTD authorized service representatives 4 Malfunctions due to disasters or forces of nature 5 Accidents or malfunctions due to any other cause ...

Страница 16: ...MA 03 JH7 5R B 18 Nov 2020 15 Options The options shown below are available for this product on request Please compare with the product you received Options for Area A standard with drain plug Without Drain Plug ...

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