Graco Manzel Lube Line Alert User Manual download pdf

ELECTRIC CIRCUITRY

The alert should not be mounted near strong magnetic ﬁelds, such as

large motors, since they may adversely affect the permanent magnet or

the magnetically actuated switch. The lead wires from the switch are

readily available through the 1/2" NPT conduit connection for wiring into

a suitable alarm or other circuit to handle electrical loads up to the rated

switch capacity.

For the normally open (NO) switch position, multiple alerts should

be wired in series or through separate circuits to provide fail-safe

circuitry. Note: The loose cover must be assembled over the exposed

machined face of the alert hydraulic body for proper Underwriters

Laboratory listing. For normally closed (NC) switch position, multiple

alerts should be wired in parallel or through separate circuits. Note:

Automatic start-up and shutdown circuits will require the use of a time

delay relay to lock out the alert circuit during start-up. A start-up delay

time of approximately sixty (60) seconds or longer is required on some

installations.

Caution: To reduce the risk of ignition of hazardous atmospheres

conduit runs must have a sealing ﬁtting connected with 18 inches of the

enclosure.

ALERT ADJUSTMENT

Check the actual installation by operating the system. If the alert fails to

energize the circuit or continuously cuts in and out, see Troubleshooting.

If, when the system is shut down, the delay time (time from ﬂow failure

to indication) is too long, the delay time can be reduced by adjusting

the switch housing body towards outlet. Adjustment should be made in

small increments, about 1/32" at a time. The ﬁnal adjustment should

be checked out several times, since the total time delay is dependent

on the physical location of the inner parts of the alert at the time of the

ﬂow stoppage. Excessive adjustment of the alert can result in failure to

energize the circuit.

If a longer or shorter time delay is needed than can be obtained with the

switch body adjustment, see Troubleshooting.

CONTAMINATION CONTROL

Alerts must be cleaned periodically. The frequency depends on the

cleanliness of the installation. Remove the hydraulic body from the

lubricant line, remove the inlet plug and tap the O-ring, bushing, plunger

magnet, and spring out through the inlet connection. Flush and blow out

all the passages. Wipe the magnet free of any iron dust.

Do not place the magnet on or near iron or steel. This may cause some

demagnetization, and affect the operation of the switch on reassembly.

Make sure the plunger is oriented in the bushing the same as in the

original assembly.

Note: The plungers and bushing are tested in matched sets at the

factory. DO NOT INTERCHANGE WITH OTHER PLUNGERS AND

BUSHINGS.

*Up Stream - toward the pump or supply source.

**Down stream - toward the outlet or terminal point.

OPERATION

The alert can be used with any lubrication system to indicate low,

intermittent or steady ﬂow. Air in any amount cannot be tolerated. For

maximum protection connect the alert in the lubricant line as close to the

terminal point as possible. The alert will detect ﬂow or lack of low up to

and through it, but not beyond it.

One alert per pump will warn of ﬂow stoppage for any reason, including

lack of lubricant in the reservoir, shaft rotation stoppage, broken lubricant

lines, contamination under pump valves or worn plungers.

A single lube line alert per lubricator compartment on an active pump will

warn of lack of lubricant in the reservoir, or shaft rotation stoppage. It

will warn of a broken lubricant line, contamination under the pump check

valve, or a worn plunger on the individual pump on which the alert is

mounted.

A single lube line alert per lubricator compartment on a special spare

pump having a shortened pump suction tube and returns the ﬂow directly

to the reservoir, will warn of shaft rotation stoppage or low lubricant level

in the reservoir before the active pumps are out of oil. Note: Cannot be

used with Manzel Model 25 Lubricator.

INSTALLATION

Cut the lubricant line as close to the point of lubrication as practical.

Extreme care is needed to eliminate all dirt and lint. Install the alert using

caution to get proper ﬂow direction, as shown on the name plate.

CHECK VALVES

Check valves should be used if the alert is going to be connected:

Directly down stream** of a lubricator pumping unit.•

Directly up stream* of a terminal check valve of lubrication point •

feeding a pulsating pressure source.

When a rupture relief or vent is directly up stream of the alert. •

That is, there is no check valve or divider valve between the alert

and the relief or vent.

Any system where the alert could be subjected to a sudden •

pressure or ﬂow reversal.

Check valves are not necessarily required if the alert is in a lubrication

system:

Between the lube meter and divider valve.•

Between sets of divider valves.•

Between a pump manifold which has inlet check valves and no •

rupture relief and a lube meter or set of divider valves.

7/16-20 NF straight thread O-ring check valves and tube ﬁttings are

available for various tubing and pipe thread sizes. See speciﬁcation sheet

bulletin No. 54000 for connection.

Manzel

Lube Line Alert

1 2

Lube Line Alert 1
Contact us today! 2

Summary of Contents

Page 1 - Lube Line Alert

ELECTRIC CIRCUITRYThe alert should not be mounted near strong magnetic ﬁelds, such as large motors, since they may adversely affect the permanent magn

Page 2 - Contact us today!

TROUBLESHOOTINGWhen contacting the Distributor, please specify delay code, oil viscosity, operating temperature (ambient and maximum differential), ﬂo

Comments to this Manuals

No comments

Graco Manzel Lube Line Alert User Manual

Browse online or download User Manual for Unknown Graco Manzel Lube Line Alert. Graco Manzel Lube Line Alert User's Manual

Summary of Contents

Comments to this Manuals

Related products and manuals for Unknown Graco Manzel Lube Line Alert