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172-65456MA-04 (JH7RM-P)  14 Jul 2015 

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 may 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 and 
remedy the cause. 

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 

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

Compare specifications and 
actual operating conditions 

Steam-locking has occurred 

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

Air binding has occurred 

Perform a bypass blowdown 
or consider switching to a 
product with a built-in air 
vent or air vent valve 

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

Clogged orifice opening 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 

Steam is leaking 
from a place other 
than the outlet 

Check for gasket deterioration or damage  Replace with new gasket(s) 

Check to make sure that the proper 
tightening torques were used 

Tighten to the proper torque 

Float frequently 
becomes damaged 

Check to see if 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 JH7RM-P

Страница 1: ...P 14 July 2015 Free Float Steam Trap JH7RM P Optional Models JH7RM W JH7RM F JH7RM V Copyright 2015 by TLV CO LTD All rights reserved ISO 9001 ISO 14001 Manufacturer Kakogawa Japan is approved by LRQA LTD to ISO 9001 14001 ...

Страница 2: ...ption section This free float steam trap employs a hinge 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 This steam trap also employs a precision ground float and three poin...

Страница 3: ...reat 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 properly...

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 injur...

Страница 5: ...as a check valve TLV CK been installed 5 Is a bypass valve installed 6 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 7 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 conde...

Страница 6: ...arge 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 enlarges the opening of the orifice A allowing more condensate to be discharged In this manner continuous condensate discharge occurs while the opening size of the orifice varies depending on the condensate flow rate 3 Closed Position When t...

Страница 7: ...other injury CAUTION Refer to the product nameplate for detailed specifications Model Maximum Allowable 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 displa...

Страница 8: ...nspection 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 Install the product so the arrow on the bod...

Страница 9: ...ontinuously 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 there is a continuous metallic sound Steam Leakage Live steam...

Страница 10: ...nd valve opening closing should be carried out only by trained maintenance personnel Drain Plug Part During Disassembly During Reassembly Drain Plug Remove with a socket wrench Consult the table of tightening torques and tighten to the proper torque Drain Plug Gasket Remove the gasket and clean sealing surface Replace with a new gasket coat surfaces with anti seize Detaching Reattaching the Cover ...

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

Страница 12: ...RM P 14 Jul 2015 11 Exploded View Cover Plug Cover Plug Gasket Cover Nut Cover Cover Gasket Screen Screen Holder Float Cover Bolt Body Drain Plug Drain Plug Gasket Orifice Gasket Orifice Orifice Plug Gasket Orifice Plug ...

Страница 13: ...e gasket onto the center of the gasket surface of the plug holder making sure the anti seize affixes the gasket tightly to the plug holder Check to make sure the gasket is not caught in the recesses of the threads 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 Screw the plug holder by hand in...

Страница 14: ...t Compare specifications and actual operating conditions Steam locking has occurred Perform a bypass blowdown or close the trap inlet valve and allow the trap to cool Air binding has occurred Perform a bypass blowdown or consider switching to a product with a built in air vent or air vent valve Steam is discharged or leaks from the outlet blowing steam leakage Clogged orifice opening or rust and s...

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: ... In principle steam traps automatically discharge inflowing condensate However if low temperature condensate in the piping blocks the trap inlet passage displacement inside the piping of steam by condensate is obstructed and condensate can no longer flow into the trap steam locking Traps only function in the presence of condensate inflow A pressure balancing line prevents the occurrence of steam l...

Страница 17: ...ng burned by hot air or steam blowing from the air vent valve The exhaust port is a 2 mm 1 16 in diameter hole on the side of the air valve body DO NOT under any circumstances allow any unprotected part of your body to come in front of this hole 2 Never leave an open air vent valve unattended Tools required 1 open end wrench distance across flats 17 mm 21 32 in 2 long handled mirror to check for s...

Страница 18: ...binding may also occur during the normal course of trap operation due to the slow accumulation of air inside the trap The air vent valve on the top of this trap is to be operated only when air binding has occurred Follow the instructions in the earlier part of this section to operate the air vent valve and release the air accumulated inside the trap The air vent valve is to be open only for as lon...

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