Graco 312147B User Manual download pdf (Page 6)

Operation

6 312147B

Operation

Oil Level

When necessary, completely fill the lubricator reservoir

with clean filtered lubricant. A sight level gauge is pro-

vided on the reservoir to monitor the fluid level. Oil level

should not be allowed to drop below the line indicating

an empty reservoir.

During the initial filling, remove the vent plug from

pumps using sight glasses prior to filling the reservoir.

This allows lubricant to rise in the vacuum tube up to the

level of lubricant in the reservoir and reduces the prim-

ing required at start up.

Pump Priming

If the sight well on the pump does not contain oil, the

pump should be primed using the following procedure:

1. If using a vacuum type pump with a sight glass,

remove the vent screw located on the top of the

sight glass.

2. Adjust the pump stroke length to its maximum set-

ting.

3. Depress the hand plunger assembly and release

when the cap contacts the adjustment rod guide.

4. Repeat until an air free stream of fluid exits the

pump outlet.

5. Replace the vent screw at the top of the sight glass.

Pumping Rate

The amount of lubricant dispensed from each pump can

be adjusted. The volume dispensed by each pump is

indicated by the amount of lubricant dripping from the

vacuum tube inside the sight glass.

The amount of dispensed volume can be adjusted by

performing the following steps:

1. Loosen the adjustment rod lock nut.

2. Turn the adjustment rod guide clockwise to

decrease the amount of lubricant dispensed, or

counterclockwise to increase the amount of lubri-

cant dispensed.

3. Once the desired settings have been achieved,

tighten the adjustment rod lock nut by hand.

If pressurized pumps are used, the reservoir should

be filled with lubricant to extend the life of the inter-

nally moving components.

The vacuum tube dispense rate is accurate after

the pump has operated long enough to stabilize

the pressure inside the sight glass. There is a time

lag at start-up, low dispense rates, and during the

adjustment of dispense rates. Allow sufficient time

to ensure the proper amount of lubricant is dis-

pensed.

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Graco 312147B User Manual Page 6

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