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PNEUMATIC LUBE SENTRY VALVE

OPERATION: Initiate lubricant ﬂow from the lube pump serving the

divider valve or pump to point system (until ﬂow has been established,

the electric or pneumatic circuit to the Lube Sentry must be bypassed).

Lubricant passing through the hydraulic section of the valve (See Figure

1 or 2) from port (1) to port (2) moves to piston (3) in the direction of the

arrow. The actuator rod (4) is attached to piston (3) and simultaneously

moves in the same direction allowing the directional spool (5) in the air

valve of the Pneumatic Lube Sentry (See Figure 1) to permit air to ﬂow

between port “A” and port “C” or tripping the microswitch(es). (See Figure

2 Note 2 on the Electric Lube Sentry.) The Lube Sentry is now in a ﬂow

position.

When lubricant ﬂow stops, spring (6) returns piston (3) in the opposite

direction, closing the porting to the lube outlet (7). The lubricant ahead

of piston (3) is forced back through the adjustable needle valve (8) at a

controlled rate. As piston (3) returns to the right, the attached actuator rod

(4) moves the Pneumatic Lube Sentry directional spool (5) permitting air

to now ﬂow between port “A” and port “B” (See Figure 1), or changing the

position of the microswitch(es) (See Figure 2 Note 2) on the Electric Lube

Sentry. The Lube Sentry is now in a no-ﬂow condition. Figure 1 shows a

typical no-ﬂow position.

Adjusting needle valve (8) clockwise increases shutdown time. A

counterclockwise adjustment decreases the shutdown time.

Note 1: Pneumatic Valve Operation (During Lubricant Flow)

Figure 1. Pneumatic Lube Sentry Valve Figure 2. Electric Lube Sentry Valve

ELECTRIC LUBE SENTRY VALVE

Flow - Green Light - ON; Red Light - OFF

No-Flow - Red Light - ON; Green Light - OFF

Note 2:

FLOW CONDITION :

For Closed Contact: Use Red and Blue Wires (Red Common)

For Open Contact: Use Red and White Wires (Red Common)

NO-FLOW CONDITION:

For Open Contact: Use Red and Blue Wires (Red Common)

For Closed Contact: Use Red and White Wires (Red Common)

CAUTION: If only two of the three wires are used, tape un-used wire.

Pneumatic/Electric

Lube Sentry Valve

Operation Port “A” Port “B” Port “C”

Norm. Open Air In Plugged Air Out

Norm. Closed Air Out Air In Plugged

Summary of content (4 pages)

PAGE 1
Pneumatic/Electric Lube Sentry Valve ELECTRIC LUBE SENTRY VALVE PNEUMATIC LUBE SENTRY VALVE OPERATION: Initiate lubricant flow from the lube pump serving the divider valve or pump to point system (until flow has been established, the electric or pneumatic circuit to the Lube Sentry must be bypassed). Lubricant passing through the hydraulic section of the valve (See Figure 1 or 2) from port (1) to port (2) moves to piston (3) in the direction of the arrow.
PAGE 2
45425 Manzel® Pneumatic/Electric Lube Sentry Valve INSTALLATION General Lube Line Connection 1. The Lube Sentry Valve should be located in the lube line downstream of pump, filters, and controls, but ahead of the master divider valve. (A high-pressure line filter placed after the pump is insurance against system plugging due to oil-born dirt.) 2. A pressure rupture assembly (Disk Relief Type) must be located in the main lube line between the pump and the line filter. 3.
PAGE 3
45425 Manzel® Pneumatic/Electric Lube Sentry Valve The Lube Sentry is provided with a 1/8” air valve. If the control orifice for the safety system is too large, air will be supplied to the Lube Sentry too quickly to permit it to dump properly.) housing, consisting of conduit elbow and cap, nipple, and adaptor by loosening and removing the adaptor, (Figure 7, Item 31) from the switch housing. A pneumatic relay may be operated by the Lube Sentry (see Figure 4). 3.
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Ordering Information Figure 7. Switch Assembly for Electric Lube Sentry Description Part No. Old Part No. Item Pneumatic Lube Sentry, Complete 563506 527-100-190 22 Description Part No. Old Part No. Qty.