Specifications

Dekker Vacuum Technologies, Inc. – DuraVane/12 11
Devarnishing
The operating life of the pump is greatly enhanced based on the oil quality and condition of filters.
Oxidized or darkened oil is a sign of trouble. Plugged filters reduce performance and may damage
pump. Periodic maintenance will offer the best protection for your equipment.
DEKKER offers a specially formulated devarnishing compound Proclean 68D for rotary vane vacuum
pumps and systems. Procedure for using Proclean 68D and MSDS sheet, are included with the
product. The compound is available in the following quantities:
Proclean 68D (part no.: 5230-0010-001) – 1 gallon
Proclean 68D (part no.: 5230-0050-001) – 5 gallon
Proclean 68D (part no.: 5230-0055-001) – 55 gallon
NOTE: Varnished pumps are not covered under warranty.
Oil filter (if installed)
When using the factory recommended specially formulated Duratex oils, change filter every 6 months
or 1000 hours of operation, whichever comes first. If other oil must be used, change filter every 2-3
months or 500 hours of operation.
CAUTION: Do not clean or re-use these filters. Filters must be disposed of properly as they
might contain toxic substances carried over from the process.
Inlet Filter (if installed)
Check after first 8 hours of operation. Clean or replace inlet filter element every 1000 to 3000 hours
depending on application or if excessive pressure drop is noticed. Note: in some applications it may be
required to clean inlet filter more often. Under extra dirty conditions it may be necessary to install 2 inlet
filters in series, one 10 micron and one 5 micron.
CAUTION: Be careful not to allow accumulated foreign material to fall in the pump suction
opening when removing the filter cartridge. Horizontal filter installation is recommended to
prevent this. Filters must be disposed of properly as they might contain toxic substances
carried over from the process.
Exhaust filter
Replace after every 2,000 hours of operation or every 6 months. All pumps fitted with a back-pressure
indicator should use this as a guide for changing the filter whenever the pressure has reached the red
mark of 8-10 psig.
CAUTION: Over filling pump with oil may result in misting and if filter is oil-soaked, it must be
replaced.
CAUTION: Do not clean or re-use these filters. Filters must be disposed of properly, as they
might contain toxic substances carried over from the process. Always replace O-rings on filter
when changing.
Bearings and Seals
Internal pump components do not require preventative maintenance. Bearings are self-lubricating type.
Bearing Lubrication – Motor (where required)
The motors are shipped from the factory with the bearings properly packed with grease. During
extended storage of 6 months or greater, the bearings should be re-lubricated prior to starting with a
good quality high temperature lithium based grease of #2 consistency. Typical products are Texaco
Premium RB and Chevron SR1 #2.
The bearings may be lubricated with the motor running or stationary. Stationary with the motor warm is
preferred. Locate the grease inlets – there is one on each end of the motor.
Note: This is generally the case with domestic motors. European motors use sealed bearings
and do not require lubrication. Consult Factory with any questions.
Clean the area and replace the pipe plug with a grease fitting as generally they are not equipped with a
grease fitting. Remove the grease drain plug, located at the lower portion of each motor face (typically
a plastic plug), and loosen any hardened grease that may block the drain. Add the recommended
volume of the previously described grease using a hand operated grease gun. Run the motor for two
hours. Replace the pipe plug in grease drain.