Operation
Lube cycle initiates when pump times out.
Air solenoid is energized to deliver air to
pump and vent valve. Pump dispenses
lubricant through injectors to bearings. Once
all bearings receive lubricant, pressure rises
in system to actuate pressure switch. When
pressure switch actuates, control is reset to
de-energize solenoid valve, cutting off air to
pump and vent valve. Pump stops, pressure
vents and pressure switch de-actuates.
Control begins timing toward next lube
event.
To prime system
Supply lines
Allow lubricant to bleed around vent plug to
expel air pockets trapped between pump
and supply line connection. Continue
operating pump until lubricant flows around
any plug.
Feeder lines
Fill each feed line with lubricant before
connecting lines to outlets of injectors and
bearings to prevent having to cycle each
injector.
Injectors
Check injectors for proper operation by
observing movement of indicator stems.
To fill reservoir
Lubricant reservoir is filled through
filler cap (
) at top of reservoir. Strainer ()
is located in filler cap. Strainer should be
removed from filler cap and cleaned
periodically.
To lubricate air valve
mechanism
Refer to Fig. IPB , page .
Disconnect air to pump.
Remove four cover screws (),
cover plate () and cover plate
gasket (
).
Remove and disassemble
air valve casting (
) from pump.
Clean or flush air valve casting to remove
any chips, or other foreign particles prior
to reassembly.
Pack cavity with grease before replacing
toggle assembly (
). Use approximately
/ ounces ( ml) NLGI light grade
water repellent grease.
Replace cover gasket, cover and screws.
Tighten to avoid air leaks.
Inspect parts at least once each year.
Vent valve
Vent valve () operates with compressed air
from same source that operates pump.
When pump is in operation, air pressure
keeps vent valve closed and lubricant is
directed through outlet to injectors. When air
to pump is shut off, vent valve opens and
supply line pressure vents back into
reservoir.
Safety unloader
Safety unloader () is provided at pump
outlet to prevent build-up of dangerously
high lubricant pressure in system. It is fac-
tory set to open at approximately
psi to psi ( to bar)
.
WARNING
Safety unloader requires no adjustment
and should not be tampered with.
Failure to comply may result in death
or serious injury.
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