Cleaver Brooks TrayMaster Deaerator 750-273 Maintenance


Cleaver Brooks TrayMaster Deaerator 750-273 Maintenance

    General Maintenance

    Cleaver-Brooks equipment is designed, engineered, and built to provide long life and excellent service on the job.

    Good operating practices and conscientious maintenance and care will obtain efficiency and economy from their operation and contribute to long years of performance.

    A well planned maintenance program avoids unnecessary down time or costly repairs, promotes safety, and aids boiler code and local inspectors.

    An inspection schedule with a listing of procedures should be established. It is recommended that a boiler room log, or record, be maintained.

    Recording of daily, weekly, monthly and yearly maintenance activities provides a valuable guide and aids in obtaining economies and length of service from Cleaver-Brooks equipment.

    Even though the deaerator has electrical and mechanical devices that make it operate automatically, these devices require systematic and periodic maintenance.

    Any “automatic” features do not relieve the operator from responsibility, but rather free him of some repetitive chores, providing time to devote to maintenance.

    Only trained and authorized personnel should be permitted to operate, adjust or repair the boiler and its related equipment.

    Good housekeeping helps maintain a professional appearing boiler room. The boiler room should be kept free of all material and equipment not necessary to the operation of the boiler or heating system.

    Alertness in recognizing unusual noises, improper gauge reading, leaks, etc., can make the operator aware of a developing malfunction, permitting prompt corrective action that may prevent extensive repairs or unexpected down time.

    Any steam, water or fuel leaks should be repaired as soon as they are noticed. These are wasteful as well as hazardous.

    Include in the program preventive maintenance measures such as regularly checking the tightness of connections, locknuts, setscrews, packing glands, etc.

    Insurance regulations or local laws may require a periodic inspection of the pressure vessel by an authorized inspector.

    Inspections of this type are usually, though not necessarily, scheduled for periods of normal boiler down time such as an off season.

    This major inspection can often be used to accomplish maintenance, replacements, or repairs that cannot easily be done at other times.

    This also serves as a good basis for establishing a schedule for annual, monthly, or other periodic maintenance programs.

    While this inspection pertains primarily to the waterside and fireside surfaces of the boiler, it provides an excellent opportunity for detailed inspection and checking of all components of the system including :

    In the event there is an accumulation of:

    Pump Maintenance - General

    At regular intervals depending on the conditions and time of operation, the following checks should be made:

    To extend the pump life in severe duty applications, consider performing one of the following actions:

    If the pump fails to operate or there is a loss of performance, refer to the Troubleshooting Section.

    CR (Grundfos) Pumps

    Motor Replacement


    CR 1s, 1, 3, 5, 10, 15, and 20: do not loosen the three shaft seal securing allen screws.

    Figure 4-1


    CR 1s, 1, 3, and 5:

    CR 10, 15 and 20:

    Torque Specifications

    CRT 2, 4, 8 and 16:

    Note: the shaft can only be raised approximately 0.20 inches (5mm).

    CR(N) 32, 45, 64 & CR90:

    Figure 4-2

    Figure 4-3

    Figure 4-4

    Motor Inspection

    The following steps should be performed at each inspection:

    Check that the interior and exterior of the motor is free of:

    Warning: Do not touch electrical connections before you first ensure that power has been disconnected. Electrical shock can cause serious or fatal injury. Only qualified personnel should attempt installation, operation, and maintenance of this equipment.

    Motor Lubrication

    Motor Lubrication Schedule (for Motors with Grease Nipples)

    Table 4-1 Motor Lubrication Schedule


    Caution: To avoid damage to motor bearings, grease must be kept free of dirt. For an extremely dirty environment, contact Grundfos, the motor manufacturer or an authorized service center for additional information. Mixing dissimilar grease is not recommen

    Note: If new grease does not appear at the shaft hole or grease outlet plug, the outlet passage may be blocked. At the next service interval the bearings must be repacked.

    Add grease SLOWLY taking approximately one minute until new grease appears at the shaft hole in the end plate or grease outlet plug. Never add more than 1-1/2 times the amount of grease shown in the lubrication schedule.

    ESV (Goulds) Pumps

    Recommended Motor Bearing Lubrication Intervals

    Mechanical Seal Replacement (e-SV 1–125) - refer to Figures 4-5 through 4-8

    Figure 4-5

    Figure 4-6

    Mechanical Seal Replacement (Sizes 33SV-125SV) fitted with Cartridge Seals

    Motor Replacement

    Figure 4-8

    Figure 4-7

    Water Level Controls

    Series 63 McDonnell & Miller

    Blow down control as follows when the deaerator is in operation:

    Note: More frequent blowdown may be necessary due to dirty water and/or local codes.

    Blowdown procedure:

    Caution: To prevent serious personal injury from steam pipe blowdown, connect a drain pipe to the control opening to avoid exposure to steam discharge. Failure to follow this caution could cause personal injury

    Series 64 McDonnell & Miller

    Series 93/193 McDonnell & Miller

    Blow down daily when the deaerator is in operation.

    Remove head assembly and inspect waterside components annually.

    Inspect the float chamber and equalizing piping annually.

    Replace head mechanism every 5 years.

    Replace unit every 15 years.

    Blowdown Procedure:

    Caution: To prevent serious personal injury from steam pipe blowdown, connect a drain pipe to the control opening to avoid exposure to steam discharge. Failure to follow this caution could cause personal injury.

Source: Cleaver Brooks

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