allen 12HD, Operation Manual

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OPERATIONS
SECTION 1
• LUBRICATOR OPERATION •
The following illustrations explain the location and operation of the air lubrication system on air
powered screeds. Follow instructions carefully to prevent mistakes that could cause problems in the
air flow which could then destroy the vibrators.
Oil must be added to the lubricator prior to operation.
Remove the oil filler cap, fill the lubricator 3/4 full with:
Pneumatic lubricating oil should be a 10W, non-detergent
mineral oil rated for pneumatic tools. [ This oil can be
purchased from McMaster Carr under Air Tool Oil. May
also be found in big box stores. ]
OIL FLOW CONTROL SCREW
Replace filler cap and tighten securely. Connect air
01L FILLER cAP
SIGHT DOME (OIi Flow)
2 - 4 Drops Per Sec.
supply hose from compressor to crows foot, attached to
lubricator. For safety, always install hair pins when
completing crows foot connections. Turn air supply
control handle to open position. Start compressor. After
the machine vibrators are running, turn the air supply
down slowly to operating pressure (30 - 75 PSI), check
LUBRICATOR ASSEMBLY
sight dome for proper oil flow (2 - 4 drops per second),
FILL To
turn screw counter-clockwise (+) for more oil, clockwise (-)
3'4;�
LL
for less oil. Do not turn screw too far in or out, this will
siGHT GLAss
shut off the oil completely. When oil flow is properly set,
you are ready for the pour.
S1-13
HOSE TO
COMPRESSOR
TO START UP NEW MACHINE:
• Make sure tape on all vibrators exhaust ports
is removed.
• Run screed with bursts of air, at intervals, until
all vibrators are lubricating. You will see an air
oil mist coming from the vibrators. Hold your
hand at the exhaust ports. This mist should
feel oily.
• Run vibrators 2 - 3 minutes at a time, up and
down in pressure, for a total of 15 minutes.
This will seat the piston to the barrel inside the
vibrator.