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30:1 President
Инструкция по эксплуатации Страница: 10

Graco 30:1 President [10/24] Operation

10 308106

Operation

WARNING

Moving parts can pinch or amputate your fingers or

other body parts. When air is supplied to the motor,

the air motor piston (located behind the air motor

plates) moves. See Fig. 2. Therefore, never oper-

ate the pump with the air motor plates removed.

Flush the Pump Before Using

The pump is tested with lightweight motor oil, which is

left in to protect the pump parts. If the fluid you are

using may be contaminated by the oil, flush it out with

a compatible solvent before using the pump. If the

pump is being used to supply a circulating system,

allow the solvent to circulate until the pump is thor-

oughly flushed.

WARNING

FIRE AND EXPLOSION HAZARD

Before operating the pump, ground the

system as explained in Grounding on

page 6. Also read the section FIRE

AND EXPLOSION HAZARD on page

Starting and Adjusting the Pump

See the Typical Installation on page 7. Be sure the

air regulator (E) and bleed–type master air valve (D)

are closed. DO NOT INSTALL THE SPRAY TIP YET!

Connect a suction hose (N) to the pump’s fluid inlet.

Hold a metal part of the spray gun (M) firmly to the

side of a grounded metal pail and hold the trigger

open. Then open the pump’s bleed–type master air

valve (D). Now slowly open the air regulator until the

pump starts, about 40 psi (280 kPa, 2.8 bar).

Cycle the pump slowly until all the air is pushed out

and the pump and hoses are fully primed. Release the

spray gun trigger and engage the safety latch. The

pump should stall against pressure when the trigger is

released.

WARNING

To reduce the risk of serious injury whenever you

are instructed to relieve pressure, always follow the

Pressure Relief Procedure on page 9.

Relieve the pressure, then install the spray tip in the

gun.

With the pump and lines primed, and with adequate air

pressure and volume supplied, the pump will start and

stop as the spray gun is opened and closed. In a

circulating system, the pump will run continuously and

will speed up or slow down as supply demands until

the air supply is shut off.

Use an adequately sized air regulator (E) to control the

pump speed and the fluid pressure. Always use the

lowest air pressure necessary to get the desired

results. Higher pressures waste fluid and cause pre-

mature wear of the pump packings and spray tip.

WARNING

To reduce the risk of overpressurizing your system,

which could result in component rupture and cause

serious injury, never exceed the Maximum Incom-

ing Air Pressure given on your pump or in the

Technical Data on pages 20 and 21.

Keep the packing nut/wet–cup (4) filled with Graco

Throat Seal Liquid (TSL) or compatible solvent, to help

prolong the packing life. Adjust the packing nut weekly

so it is just tight enough to prevent leakage; do not

overtighten. See Fig. 2. Always relieve the pressure

before adjusting the packing nut.

Never allow the pump to run dry of the fluid being

pumped. A dry pump will quickly accelerate to a high

speed, possibly damaging itself. A pump runaway

valve (B), which shuts off the air supply to the pump if

the pump accelerates beyond the pre–set speed, is

available. See the Typical Installation on page 7. If

your pump accelerates quickly, or is running too fast,

stop it immediately and check the fluid supply. If the

supply container is empty and air has been pumped

into the lines, refill the container and prime the pump

and the lines with fluid, or flush and leave it filled with a

compatible solvent. Be sure to eliminate all air from the

fluid system.

Graco 30:1 President [10/24] Operation

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