Hubbell STH manual Section V Troubleshooting, Overheating

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SECTION V – TROUBLESHOOTING

(See separate component O&M for additional details.)

Symptom

Probable Cause

Corrective Action / Remedy

Gradual loss of heating

Tubes are fouled.

Clean tubes per Section III, annual

capacity.

 

scheduled maintenance.

 

Excess silt in bottom of tank.

Drain and flush tank per Section III ,

 

 

annual scheduled maintenance.

 

Air or water leak in

Repair or replace per separate O&M.

 

temperature control.

 

 

Ruptured diaphragm on air

Repair or replace per separate O&M.

 

or water operated valve.

 

 

Debris in Accritem.

Clean Accritem.

 

 

 

 

Strainers clogged.

Clean strainers per Section III, annual

 

 

scheduled maintenance.

 

Pump impellor deteriorated.

Repair or replace per separate O&M.

 

 

 

Overheating.

Temperature regulator has

Repair or replace per separate O&M.

 

lost its charge, self contained

 

 

valves only.

 

 

Ruptured tube(s) in heating

Remove / replace heating coil.

 

coil.

 

 

Temperature regulator needs

Adjust temperature regulator per

 

adjusting.

Section IV.

 

Circulator not operating.

Repair or replace per separate O&M.

 

 

 

 

Debris under seat of

Repair or replace per separate O&M.

 

temperature control valve.

 

 

Capillary tube pinched on

Repair or replace per separate O&M.

 

temperature control.

 

Immediate loss of heating

Rib blown out of tube side

Remove heating coil and replace

capacity.

gasket.

gasket.

 

Capillary tube pinched on

Repair or replace per separate O&M.

 

temperature control.

 

 

Ruptured diaphragm on

Repair or replace per separate O&M.

 

temperature control valve.

 

 

Defective steam trap.

Repair or replace per separate O&M.

 

Blockage in condensate line.

Clean blockage from condensate line.

 

Loss of air pressure on

Check air pressure to temperature

 

temperature regulator.

regulator. Verify that it is within

 

 

limits. Adjust as necessary.

 

 

 

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Contents Electric Heater Company Hubbell Electric Heater Company STRATFORD, CTTable of Contents Section Title Page Page Nomenclature for Parts Nomenclature for Accessory Parts Page Section I General Description and Construction TankOuter SHELL, INSULATION, and Supports Tank ConnectionsSteam Heating Coil Steam Operating Controls TrapsSingle Solenoid Safety System OptionsWater Heater Placement Section II Installation and OperationPiping Installation HOOK-UP of AIR and Water Operated Controls Typical Piping Diagram Electrical InstallationFilling the Heater StartupShutdown Quarterly Inspection Section III Scheduled Maintenance and ServicingAnnual Inspection Page Page Page Page Single Safety Solenoid System if installed Double Safety Solenoid System if installed Section IV Adjustment of Temperature Regulators Adjustment of 2-WAY AIR or Water Operated ValvesAdjustment of Pilot Operated Valves Page Section V Troubleshooting OverheatingExcessive vibration Section VI Miscellaneous Charts and Formulas Torque Values Metric Conversions

STH, ST specifications

Hubbell ST and STH connectors are pivotal components in the realm of power and data transmission. Known for their durability and reliability, these connectors are widely implemented in both commercial and industrial applications. Their design caters to the need for efficient connectivity while ensuring safety and performance.

The Hubbell ST connector is engineered with a robust, user-friendly configuration that allows for quick and simple installations. It features a bayonet-style coupling mechanism, which ensures that the connection is secure and resistant to accidental disconnection. This design is especially beneficial in high-vibration environments, making it ideal for use in various industries, including telecommunications, aerospace, and manufacturing.

On the other hand, the STH connector is specifically designed for high-temperature applications and environments where harsh conditions prevail. It is made from high-temperature materials that can withstand significant thermal stress, thus ensuring consistent performance even in challenging conditions. This feature is particularly crucial for industries such as oil and gas, renewable energy, and any sector that relies on high-performance machinery.

Both ST and STH connectors utilize advanced technologies to enhance their performance. They incorporate precision-engineered contact surfaces that allow for optimal electrical flow, while minimizing signal loss. This is especially important in data-intensive industries where maintaining signal integrity is critical. Additionally, these connectors feature insulation systems that provide protection against moisture, dust, and other environmental factors, significantly prolonging their lifespan.

One of the standout characteristics of Hubbell connectors is their versatility. They come in various configurations and sizes, allowing them to cater to a wide range of applications, from telecommunications to industrial machinery. The connectors can handle different voltage levels and current ratings, thus accommodating the requirements of diverse operational setups.

In conclusion, Hubbell ST and STH connectors represent reliability and functionality in connectivity solutions. Their robust construction, advanced technologies, and adaptability make them a top choice for professionals looking for efficient and dependable connectors in demanding environments. Whether it’s ensuring seamless data transmission or providing power to critical systems, Hubbell connectors stand out as a preferred solution across many industries.