CleaverBrooks CBEX Elite, Operation And Maintenance

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Inspection and Maintenance
8-20 750-368
CBEX Elite 100-1200 HP
8.17.2 — Lubricating Oil
Lubricating oil must be visible in the sight glass at all times. There is no specific level required as long as oil is
visible. Do not operate if oil is not visible.
Oil with proper viscosity must be used. SAE 20 detergent is recommended, although SAE 10 detergent is also
permissible.
When adding oil, remove the cover from the fill pipe and add oil through the conical strainer in the pipe with the
unit running.
The oil and its container should be clean. Although there is a strainer in the lube oil line, its purpose is to remove
any unwanted materials rather than to act as a filter for unclean oil.
8.17.3 — Lubricating Oil Strainer and Cooling Coil
Air pressure from the pump forces lubricating oil from the tank through a cooling coil to the pump. The oil lubri-
cates the pump bearings and also provides a seal and lubrication for the pump vanes.
The cooled oil flows to the pump through the strainer in the filler pipe. It is possible to visually verify oil flow
during operation by removing the filler cap and checking the flow. If necessary, the strainer may be cleaned
during operation.
In the event it is necessary to clean the strainer during operation, clean it and replace immediately. It can be
cleaned by immersing in solvent and blowing it dry with compressed air. Do not operate without the strainer any
longer than necessary, and never add new oil unless the strainer is in place. A spare strainer basket can be
obtained, if desired, and used on a rotating basis while the other is serviced.
8.17.4 — Air-Oil Tank
Pads of steel wool are used in the air-to-oil tank as a filtering medium to separate the lube oil form the com-
pressed air.
The pads play a very important role and should be replaced semi-annually. It is also important that a proper
grade of steel wool be used. Only No. 3 coarse grade American steel wool or equivalent (CB919-124) should be
used. When replacing the wool, insert all but the last pad into the cylinder. Alternate the grain of the pads. Install
the spacer with its stub end toward the opening and fit one pad over the stub. Be careful not to overly compress
the wool and be sure that it is fluffed out to fill all available space. Improper packing can cause high oil con-
sumption. After the last pad is in place, slip the retainer screen onto the cylinder. Be sure to fit an o-ring gasket
under the cover so that a tight seal is obtained.
Follow previous instructions for oil replacement.
Oil must NEVER be added unless the pump is in operation and the strainer screen is in place. Failure to follow these
instructions could result in equipment damage.
! Caution