CleaverBrooks CBEX Elite, Эксплуатация и обслуживание

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Starting and Operating Instructions
5-2 750-368
CBEX Elite 100-1200 HP
Check for rotation of all motors by momentarily closing the motor starter or relay. The blower impeller rotation is
counterclockwise when viewed from the front of the boiler. The air pump rotation is clockwise when viewed from
the drive end.
Before operating the boiler feed pump or oil supply pump, be sure all valves in the line are open or properly posi-
tioned.
For safety reasons, perform a final pre-startup inspection, especially checking for any loose or incomplete piping
or wiring or any other situations that might present a hazard.
5.2 — Control Settings: Steam and Hot Water
See Chapter 6 for adjustment instructions for the following controls. Inspect the operating limit control for proper
setting as follows:
1.
The operating pressure control of a steam boiler should be set slightly above the highest desired steam pres-
sure, but at least 15% lower than the setting of the safety valve.
2.
The temperature operating control on a hot water boiler should be set slightly above the highest desired water
temperature and within the limits of the pressure vessel.
Inspect the high limit control for proper setting as follows:
3.
On a high pressure steam boiler, the high limit control should be set approximately 10 psig above the operat-
ing limit pressure control setting, if feasible, or midway between the operating limit pressure and the safety
valve setting. The setting on a low pressure steam boiler may be 2 or 3 psig above the operating limit setting,
but must not exceed the safety valve setting.
4.
On a hot water boiler, the high limit temperature control should be 5º F to 10º F above the operating limit
temperature control setting but within the limits of the design pressure of the pressure vessel.
Inspect the low-water cutoff and pump control as well as the auxiliary low-water cutoff (if so equipped). See
manual 750-281 for complete information on the CB Level Master.
In the event the boiler is equipped with optional control devices not listed here, be certain to ascertain that their
settings are correct. If additional information is required, see your local Cleaver-Brooks authorized representative
or contact Cleaver-Brooks.
The pressure vessel support legs are welded to mounting skids in front and secured by bolts at the rear of the pres-
sure vessel. The bolts are tightened for shipment. When the boiler is installed, and prior to initial firing, the bolts
securing the rear legs to the skid must be loosened to allow for expansion and contraction caused by differences in
temperature between pressure vessel and skids and to avoid damage to the equipment.
NOTE: The settings of all the above controls may require some readjustment after the boiler is started and running
for a short period. The scale settings on the controls are relatively accurate, but are principally for use as guides.
Final adjustment should be based on and agree with the reading of the steam pressure gauge or the water tempera-
ture thermometer.
!
Caution