Graco 25C483 Manual de operación

Instructions-Parts

Electric Back Gear Drum Agitators

3A4548A

Heavy duty, back geared agitator for mixing and maintaining suspension of industrial coatings stored in

55 gallon drums. For professional use only.

Important Safety Instructions

Read all warnings and instructions in this manual and associated

component manuals. Save all instructions.

See page 3 for a complete list of model

descriptions and part numbers.

PROVEN QUALITY. LEADING TECHNOLOGY.

Contents

Models............................................................... 3

Related Manuals ................................................ 3

Warnings ........................................................... 4

Installation.......................................................... 6

Assembling and Positioning the

Agitator .......................................... 6

With or Without an Elevator .......................... 7

Installing the Siphon Kit ................................ 8

Electrical Connections.................................. 9

Graco Motor Control..................................... 9

Grounding the Agitator ................................. 9

Operation........................................................... 10

Pre-Start Checklist ....................................... 10

Startup ........................................................ 10

Shutdown .................................................... 10

Service .............................................................. 11

Cleaning the Agitator Shaft and Seal............. 11

Cleaning the Agitator Shaft with Siphon

Kit.................................................. 11

Servicing the Gear Reducer.......................... 11

Additional Agitator Service............................ 12

Parts — Agitator with Drum Cover and

Elevator................................................ 13

Parts — Motor and Back Gear Box ...................... 14

Parts — Agitator with or without Siphon................ 16

Notes ................................................................ 18

Accessories........................................................ 19

Technical Data ...................................................19

23A4548A

Models

Table 1 UL Listed Explosion Proof Inverter Duty Motor*

PN Desc

Shaft

and

Blades

Siphon Drum

Cover

Elevator

and Cover

Support

Elevator Air

Control

Ground

Wire Kit

25C483 Back-Gear, Drive Only ♦

25C485 Agitator ♦♦

25C486 Agitator, Siphon ♦♦ ♦

25C374 Agitator, Elevator, Cover ♦♦♦♦♦

25C451 Agitator, Elevator, Cover,

Siphon ♦♦♦ ♦ ♦ ♦

Table 2 ATEX Listed Explosion Proof Inverter Duty Motor*

PN Desc

Shaft

and

Blades

Siphon Drum

Cover

Elevator

and Cover

Support

Elevator Air

Control

Ground

Wire Kit

25C484 Drive Only ♦

25C487 Agitator ♦♦

25C488 Agitator, Siphon ♦♦ ♦

25C481 Agitator, Elevator, Cover ♦ ♦♦♦♦

25C480 Agitator, Elevator, Cover,

Siphon ♦♦♦♦♦♦

*SeeTechnical Data, page 19 for motor ratings.

NOTE: See manual 3A4793 for listing of VFD motor controls ordering information.

Related Manuals

Manual Number Title

3A4793 Motor Control, VFD (Variable Frequency Drive)

306287 Elevators and Pump Supports

308466 Drum Covers, Stainless Steel, Passivated

3A4548A 3

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation

point symbol alerts you to a general warning and the hazard symbols refer to procedure-speciﬁc risks. When these

symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-speciﬁc hazard

symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation

point symbol alerts you to a general warning and the hazard symbols refer to procedure-speciﬁc risks. When these

symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-speciﬁc hazard

symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.

WARNING

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or

solvent ﬂowing through the equipment can cause static sparking. To help prevent ﬁre and explosion:

• Use equipment only in well ventilated area.

• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic

drop cloths (potential static arc).

• Ground all equipment in the work area. See Grounding instructions.

• Never spray or ﬂush solvent at high pressure.

• Keep work area free of debris, including solvent, rags and gasoline.

• Do not plug or unplug power cords, or turn power or light switches on or off when ﬂammable

fumes are present.

• Use only grounded hoses.

• Hold gun ﬁrmly to side of grounded pail when triggering into pail. Do not use pail liners unless they

are antistatic or conductive.

•Stop operation immediately if static sparking occurs or you feel a shock, Do not use equipment until

you identify and correct the problem.

• Keep a working ﬁre extinguisher in the work area.

ELECTRIC SHOCK HAZARD

This equipment must be grounded. Improper grounding, setup, or usage of the system can cause

electric shock.

• Turn off and disconnect power at main switch before disconnecting any cables and before servicing

or installing equipment.

• Connect only to grounded power source.

• All electrical wiring must be done by a qualiﬁed electrician and comply with all local codes and

regulations.

43A4548A

Warnings

WARNING

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

• Do not operate the unit when fatigued or under the inﬂuence of drugs or alcohol.

• Do not exceed the maximum working pressure or temperature rating of the lowest rated system

component. See Technical Data in all equipment manuals.

• Use ﬂuids and solvents that are compatible with equipment wetted parts. See Technical Data in all

equipment manuals. Read ﬂuid and solvent manufacturer’s warnings. For complete information

about your material, request SDS from distributor or retailer.

• Do not leave the work area while equipment is energized or under pressure.

• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine

manufacturer’s replacement parts only.

• Do not alter or modify equipment. Alterations or modiﬁcations may void agency approvals and

create safety hazards.

• Make sure all equipment is rated and approved for the environment in which you are using it.

• Use equipment only for its intended purpose. Call your distributor for information.

• Route hoses and cables away from trafﬁc areas, sharp edges, moving parts, and hot surfaces.

• Do not kink or over bend hoses or use hoses to pull equipment.

• Keep children and animals away from work area.

• Comply with all applicable safety regulations.

MOVING PARTS HAZARD

Moving parts can pinch, cut or amputate ﬁngers and other body parts.

• Keep clear of moving parts.

• Do not operate equipment with protective guards or covers removed.

• Before checking, moving, or servicing equipment, disconnect all power sources.

TOXIC FLUID OR FUMES

Toxic ﬂuids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or

swallowed.

• Read Safety Data Sheet (SDS) to know the speciﬁc hazards of the ﬂuids you areusing.

• Store hazardous ﬂuid in approved containers, and dispose of it according to applicable guidelines.

PERSONAL PROTECTIVE EQUIPMENT

Wear appropriate protective equipment when in the work area to help prevent serious injury, including

eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but

is not limited to:

• Protective eyewear and hearing protection.

• Respirators, protective clothing, and gloves as recommended by the ﬂuid and solvent manufacturer.

3A4548A 5

Installation

Assembling and Positioning the

Agitator

Personal injury or equipment damage may result

from lifting/falling heavy equipment. To avoid

personal injury or equipment damage:

• Do not lift the drum cover and agitator without

proper assistance

• Do not walk or stand beneath a raised elevator.

With an Elevator

Mount the drum cover as described in manual

306287. The elevator must be in the down

position when working on the elevator, agitator,

or drum cover assembly. Proceed to step 1 in

With or Without an Elevator, page 7 .

Without an Elevator

If your system does not have an elevator, install the

Handles Kit to facilitate handling the drum cover and

agitator.

To order the Handles Kit, order Part No.

237524

Place two standard 55 U.S. gallon (45 Imperial gallon)

barrels 14 in. (approximately 36 cm) apart, and center

the drum cover on the barrels with the Graco logo

centered and facing you, as shown in Fig. 2. Proceed

to step 1 in With or Without an Elevator, page 7 .

Figure 1 Drum Cover on Barrels

63A4548A

Installation

With or Without an Elevator

1. Install the agitator shaft (33) by threading it into

the stub (6) on the bottom back gear housing (1).

See Figure 2.

2. Slide the agitator shaft through the large hole in

the center of the drum cover.

3. Rotate and align the three tapped holes in the

bottom of the housing with the three through

holes in the drum cover.

4. Thread three hex head screws (45 not shown)

with thread sealant (not provided) up through the

drum cover and into the bottom housing. Torque

them to 75 in-lb (8.4 N-m).

5. Assemble one pair of agitator blades (34) so that

the four through holes in the blade halves are

lined up.

6. Push four cap screws (35) through the four holes

in the blades, and start the four lock nuts (36)

onto the cap screws.

7. Slide the loose blade assembly up the shaft, and

position it approximately 13 in. (33 cm) from the

bottom of the shaft.

8. Tighten the lock nuts evenly to draw the blades

together until they are tight on the shaft. Torque

thelocknutsto50to55in-lb(5.6to6.2N-m). A

gap will remain between the blade halves.

9. Repeat steps 4 and 5 with the second pair of

agitator blades.

10. Position the second blade assembly near the

bottom end of the shaft, but not on the bottom

plug (40).

11. Rotate the lower blade assembly so that it is

oriented 90 degrees relative to the upper blade

assembly, and torque the lock nuts to 50 to 55

in-lb (5.6 to 6.2 Nm). A gap will remain between

the blade halves.

Figure 2 Agitator Shaft and Blades

3A4548A 7

Installation

Installing the Siphon Kit

The equipment must be grounded to reduce the

risk of static sparking and electric shock. Electric

or static sparking can cause fumes to ignite or

explode. Improper grounding can cause electric

shock. Grounding provides an escape wire for the

electric current.

1. Replace the bottom plug (20) with the plain

bearing (53), and tighten the bearing with a

wrench. See Figure 4.

2. Work the PTFE o-ring (54) onto the siphon tube

retainer (51), and press it into the o-ring groove.

3. Replace the top plug (5) with the siphon tube

retainer/o-ring. Leave the retaining nut (52) on

the siphon tube retainer, but make sure it is not

tightened. Tighten the siphon tube retainer/o-ring

into the top of the agitator housing with a wrench.

4. Slide the siphon tube (50) down through the

retaining nut, siphon tube retainer, and agitator

shaft until the siphon tube touches the bottom of

the drum. Raise the siphon tube approximately

1/4 in. (approximately 6 mm) so that it does not

touch the bottom of the drum. Hold the siphon

tube at this height with one hand, and tighten the

retaining nut with the other hand (hand-tight is

enough to hold the siphon tube in place).

NOTICE

Barrel Heights Vary.

Loosen the retaining nut on the siphon tube

retainer before you raise the drum cover. If you do

not loosen the retaining nut, the siphon tube may

make contact with the bottom of the barrel when

you lower the drum cover onto a new barrel, which

could damage the siphon tube or the barrel.

Figure 3 Siphon Tube

83A4548A

Installation

Electrical Connections

Connect Motor to VFD

To avoid injury from ﬁre, explosion, or electric

shock, all electrical wiring must be done by a

qualiﬁed electrician and comply with all local codes

and regulations.

Follow the instructions in the motor manufacturer’s

manual provided with this agitator to connect the

motor to the VFD. Wire size, fuse size, and other

electrical devices must comply with all local codes

and regulations.

NOTICE

To avoid equipment damage, do not plug the

motor directly into a wall socket. The motor must

be wired to a VFD.

Graco Motor Control

See manual 3A4793 for information on motor control

installation and operation.

Grounding the Agitator

The equipment must be grounded to reduce the

risk of static sparking and electric shock. Electric

or static sparking can cause fumes to ignite or

explode. Improper grounding can cause electric

shock. Grounding provides an escape wire for the

electric current.

The drum cover and all electrically conductive

objects or devices in the dispensing area must be

properly grounded. Check your local electrical code

for detailed grounding instructions for your area and

type of equipment.

To ground the agitator, connect one end of the

ground wire (A) to the ground connector (B) on the

agitator. Connect the other end of the ground wire to

a true earth ground.

Figure 4 Agitator Ground

3A4548A 9

Operation

To reduce the risk of serious injury, including cuts,

amputation of ﬁngers by the agitator blades, and

splashing in the eyes or on the skin, always shut

off the agitator (power off the VFD) before you

raise, check, or repair the agitator.

Pre-Start Checklist

Verify each of the following items before starting the

pump.

•DEBRIS: Ensure that the drum is free of any

contaminants or debris that will block blade

movement.

•HOSE MATERIAL: Check that the hose material

is compatible with the ﬂuid being pumped. Consult

your Graco distributor for available hose materials.

•FASTENERS: Check that all fasteners are properly

tightened.

•LEAKS: Check the suction line connection to verify

there are no leaks and that all ﬁttings are tight.

•COVERS: Verify that the motor cover and motor

fan cover are in place before starting the pump.

Startup

Use the VFD to start, stop, and adjust the agitator

speed. See manual 3A4739 for Graco supplied VFD

operating information.

NOTE: Always maintain moderate agitator speed,

which is approximately 20 to 40 rpm of the agitator

blades. Excessive agitator speed may cause

vibration, foaming of ﬂuid, and increased wear

on parts. Always agitate ﬂuid thoroughly before

supplying it to the dispensing equipment. Continue

agitating ﬂuid while the dispensing equipment is

being supplied.

If using a Graco-supplied VFD, the agitator speed

can be calculated by using the formula below:

Example 1: (AIB) x C = DIE=F

Example 2: (40 hz I60 hz) x 1725 rpm = 1150

rpm (motor)I24 (gear reduction) = 48 rpm

(agitator shaft)

A VFD Frequency

B Motor Frequency

C Motor Speed

D Motor RPM

EGear Reduction

F Agitator RPM

See manual 306287

Elevators and Pump Supports

for information on operating the elevator.

Shutdown

UsetheVFDstopbuttontostoptheagitator.

NOTICE

Keep the agitator upright. Do not lay it on its side

or upside down or liquid may ﬂow down the shaft

and into the gear reducer area, which will damage

the equipment.

10 3A4548A

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