CleaverBrooks 4WI, Руководство по эксплуатации, обслуживанию и запасным частям

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750-211 (revised 2009)
Promethean Boilers, Model 4WI Manual 8-27
8.18 — Refractory
11.
Remove screws holding the front bracket to the base and lift off the pump with its attachments. Note the loca-
tion of the pipe fittings and brackets prior to removing for installation on the replacement pump. If piping is
dismantled, be sure that the check valve is re-installed so that the gate swings toward the pump.
8.17.8.2 — Reassembly
Reassemble in reverse order. With the rear pump bracket left in place, realignment and spacing between the pump
shaft and the motor shaft is greatly simplified.
There should be approximately 7/8” space between the two shafts. Place the coupling insert between the coupling
halves prior to reassembly. Check that both shafts rotate freely.
Refer to the previous section on coupling alignment instructions.
If shims were used originally under either pump brackets or motor feet, be sure that they are correctly re-installed.
When re-installing the fan, slide the hub on the pump shaft so that it is bottomed. Tighten the setscrew and cap-
screws. If the fan blades were removed from the hub, be sure that the side of the blade marked “Blower” faces the
hub when reassembling. When tightening the coupling halves or the fan hub, tighten the setscrews against the key
first, then tighten the setscrew against the shaft. Clean or remove any dust or grime from the blades prior to re-
installing.
When replacing the retainer screen, a slight force may be required to push the cooling coil into the air cylinder so
that the pins may be fitted into place.
Be sure that all piping connections are tight.
If the motor was replaced or if motor leads were disconnected, be sure that pump rotation is proper before starting
operation. The air pump should rotate in a clockwise direction, as viewed from the drive shaft end.
Keep the motor and other components free from dust and dirt to prevent overheating and damage. Motor lubrica-
tion should follow manufacturer’s recommendations.
8.18 — Refractory
The boiler is shipped with completely installed refractory. This consists of furnace throat tile, furnace liner, and the
crawl-way plug. Normal maintenance requires little time and expense, and prolongs the operating life of the refrac-
tory.
Preventive maintenance through periodic inspection will keep the operator informed of the condition of the refrac-
tory, and will guard against unexpected and unwanted downtime and major repairs.
Frequent wash coating of the refractory surfaces is recommended. High-temperature bonding, air-dry type mortar,
diluted with water to the consistency of light cream, is used for wash coating. Re-coating intervals will vary with
operating loads and are best determined by the operator when the boiler is opened for inspection.