Graco Single Line Parallel Lubrication System Bedienungsanleitung PDF herunterladen (Seite 12)

L12100

1. HANDLE

2. PISTON

3. DETENT BALL

4. RELIEF-TO-TANK

PORT

5. CONNECTING PORT

6. CHECK VALVE

7. OUTLET

8. LUBE CAVITY

9. BALL DETENT CAVITY

10. GAUGE PORT

VIEW “A-A”

FRONT

VIEW

FEATURES / BENEFITS

• Interchangeable reservoirs make it easy to customize the

pump package for each application.

• Simple, positive-displacement pump design keeps the number

of wear parts to a minimum for extended pump life.

• Built-in bleed mechanism provides system pressure venting

when the pump handle is returned to the fully upright

position.

• 3000 psi pressure gauge provides a fast check on system

status.

OPERATION

Figure 6 shows a cutaway view of a hand-operated pump. As the

pump handle (1) is pulled down, piston (2) moves forward past the

detent (3) closing the relief to tank port (4). Further forward motion

of piston (2) displaces the volume of lubricant in cavity (8) through

connecting port (5) and check valve (6) and to the outlet (7). The

handle is then partially returned until the detent ball (3) contacts,

but does not retract into, the ball indent cavity. If the handle is

returned too far, the pressure built up in the lube cavity (8) will be

vented, indicated by a decrease in the pressure gauge’s reading.

Continue to stroke the pump until the pressure gauge reads 1500

psi (103 bar) for oil or 2500 psi (173 bar) for grease). After system

pressure has been attained, causing all the injectors to dispense

lubricant, the pump handle is returned to the full upright position

(past the detent). This allows system pressure to vent through port

(4) back to reservoir, thereby allowing the injectors to reset and

prime for their next delivery of lubricant.

PRESSURE GAUGES

Pressure Gauges are installed in the pump outlet to allow the

operator to know when correct pressure has been attained.

When correct pressure has been reached, the operator returns

the handle to the full upright position, venting line pressure and

allowing the injectors to reset.

Figure 6. Hand-Operated Pump - Operation

(Full upright position shown)

Page 10

SPECIFICATION

Pump Body Material Aluminum and steel

Pump Output 0.125 cu.in (2.0 cm

) per stroke

Max Operating Pressure 3000 psi (207 bar)

Force to Operate Handle 20 lbs (9 kg) per 1000 psi (69 bar)

Lubricant Oil or Grease (NLGI #1 or lighter)

Reservoir Capacities

(for oil or grease, plastic)

6 pints (2.84 liters) or 6 lbs (2.72 kg)*

12 pints (5.68 liters) or 12 lbs (5.44 kg)*

20 pints (9.46 liters) or 20 lbs (9.06 kg)*

*Nominal grease reservoir size is based on a direct conversion of oil

reservoir capacity and does not reﬂ ect volume loss due to the follower

and spring. Actual volumes containd are: 6 lb (2.6 lb), 12 lb (5.8 lb), 20

lb (11.8 lb).

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