Traid Triumph 1000, Руководство по эксплуатации и техническому обслуживанию

Страница: 50 / 67

50
TRIAD Boiler Systems, Inc.
West Chicago, IL
www.triadboiler.com
14. If applicable, remove the flow switch jumper and return the operating and high limit temperature
controls to normal.
15. Start the water circulating equipment.
16. Start the fuel burning equipment. Observe the pressure and temperature until the system returns
to normal operating conditions and the operating control has cycled the burner on and off at least
once.
17. Check again to assure that the safety relief valve is not leaking
* In the absence of flow metering equipment, opening of the valve can be considered to have been
achieved when a steady fast drip or stream of approximately 2.4 cubic inches/min is observed at the
discharge opening of the valve.
7.2 Gauges
7.2.1 Pressure gauges
A proper pressure gauge was shipped loose with your boiler. If your gauge needs to be replaced, the
following information is helpful to specify its replacement. Pressure gauges are used on both steam and
hot water boilers. Gauges can be damaged by overpressure or corrosion.
7.2.2 Pressure gauge range
The gauge range should be selected so that the gauge will normally operate in the middle of the scale. For
example, if the operating pressure is 50 psi, then a 100 psi gage should be used.
7.2.3 Pressure gauge accuracy
The gauge accuracy is expressed in percent of full scale reading. For example, if a 100 psi gage is 2%
accurate, then it will be within ±2 psi of the actual pressure. A gauge is usually more accurate at mid-scale
and should be calibrated at that point. Most gauges used on boilers have an accuracy of 1 % to 1 1/2%.
An inspector gauge is usually 1/2% accurate and a laboratory gauge may have an accuracy of 1/4%.
7.2.4 Pressure gauge calibration
The gauge used on a boiler should be calibrated at least once per year. This can be accomplished by
comparing it to an inspector gauge or using a deadweight tester. If an inspector gauge is used, the accuracy
of that gauge should be verified with a deadweight tester at least once every 2 years. If the gauge is
damaged or cannot be calibrated to provide consistent readings, it should be discarded and replaced with
a new gauge.
7.2.6 Temperature gauges
Water boilers are supplied with a proper temperature gauge installed at a location indicated in the