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Tenney Company
www.tenneyco.com
Jensen Sentry System Recharge/Flush Procedure
Jensen's dual purpose Sentry System is designed to provide lubrication to the Seal area and provide a visual notification of a Seal fa ilure.
Know your system
Upper Leak Detection Glass.
If product is visible a leak is present.
Lower Lubrication Level Glass.
Fill with lubrication until visible in
the center this glass.
Air Release Valve
MODEL 480 is shown here.
This Valve opens to the "Tank
Product Side" of the Sentry
System. It is used to "bleed" the
Shaft Tube of air and prevent Air
Lock during a new installation or if Tank
has been lowered below the Shaft Tube.
(Removal of pipe plug is necessary.)
NOTE:
Model 450 Air Release Valve
and Leak Detection Inlet are swapped
left to right. Air Release Valve is pointed
in a downward direction.)
SYSTEM FLUSH
The purpose of a System Flush is to clean the seal area of debris and other
unwanted contaminants that may have collected in the Seal area.
To perform the system flush a containment vessel (bucket) and an adjust-
able wrench will be needed. Mixer unit must be powered down.
1)
Remove the plug from the Leak Detection Fill Inlet. Item 10
2)
Remove the plug from the base of the Valve (Item 7). Place contain-
ment vessel under the Reservoir Valve and raise the valve handle to
the open position and empty contents into containment vessel.
3)
With valve open, pour FLUSHING fluid into Leak Detection Fill Inlet
(Jensen recommends flushing with the Royal Purple Poly Guard FDA
46) . Add approximately 2-3 quarts and let the system drain.
4)
Close Reservoir Valve and replace Inlet plug. Refill Reservoir to cen-
ter of lower sight-glass. Power up mixer for 3-5 minutes.
5)
Remove Inlet plug and open Reservoir Valve to drain contents.
Add 2-3 quarts and let the contents drain. Close Reservoir Valve,
replace Reservoir Valve plug and fill to center of the lower sight-
glass. Replace inlet plug and power up Mixer. This will complete the
System Flush.
For Jensen Mixer Parts - Call 281-350-1200
12
Vent\Breather Assembly
Lubrication Reservoir
rd
*Some models may possess a 3
port for automated
detection capabilities.
Reservoir Drain Valve
Leak Detection Inlet
Removing the pipe plug provides access to
the Seal Cavity and Lubrication Reservoir.
This is the fill point for adding seal
lubrication.
FILL WITH :
ROYAL PURPLE POLY GUARD FDA 46
(OR COMPARABLE )
This will also be the Fill Point for a Sys-
tem Flush. A System Flush should be
performed at every Lubrication Oil
change and every Seal change.
Jensen recommends changing the Seal
Lubrication Oil every 6 months. More or
Less time between oil change intervals
may be possible depending on climate,
run time, product, and other factors. Oil
quality should be checked monthly.
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