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Service

9.

Turn the large gear (9) counter-clockwise to
remove it from the agitator shaft, and lift the
pinion/gear assembly (10, 15) out of the lower
housing. Do not lose the two small thrust balls
(4). One in the upper housing, and one in the
lower housing.

10. Turn the 50 mm nut (18) counter-clockwise to

remove it from the agitator shaft.

11. Carefully lift the lower housing off of the agitator

shaft.

Cleaning

Cleaning

Cleaning and

and

and Servicing

Servicing

Servicing

1.

Clean any foreign material from the outside of
the upper and lower housings (1 and 2). See

Parts, page 15

.

2.

Inspect the parts for any wear. If any of the
parts are worn or damaged, replace them. The
Bearing Replacement Kit contains replacement
bearings, seals, and balls.

Reassembling

Reassembling

Reassembling

1.

Reposition the lower housing (1) on the agitator
shaft stub (6). See

Parts, page 15

.

NOTICE

NOTICE

NOTICE

To prevent damage to the bearings and seals,
avoid scraping them against the threaded
agitator shaft while lowering the lower housing
in place.

2.

Thread the 50-mm nut (18) onto the agitator shaft
by turning it clockwise, and tighten it hand tight.

3.

Reposition the pinion/gear assembly (10, 15)
in the lower housing, thread the large gear (9)
onto the agitator shaft, and tighten the large gear
hand tight.

4.

Make sure the small thrust balls (4) are in place.

5.

Carefully lowering it straight down, reposition the
upper housing (2) on the lower housing (1).

6.

Replace the two short bolts (11) and the two long
bolts (19) that hold the upper housing and the
lower housing together, and torque the bolts to
75 in-lb (8.5 N-m).

7.

Remove the blocks supporting the agitator
housing, and reposition the agitator on the drum
cover.

8.

Thread the three hex head screws up through
the drum cover and into the agitator, and torque
them to 75 in-lb (8.4 N-m).

9.

If your agitator has a siphon kit, re-install it
by doing the reverse of steps 2 through 4 in

Cleaning the Agitator Shaft — Models with
Siphon Kit, page 13

.

Additional

Additional

Additional Agitator

Agitator

Agitator Service

Service

Service

If the unit requires more than installation of a bearing
replacement kit or gear replacement, it is advisable
to send the unit to a Graco distributor for repair or
replacement.

14

3A4548G

All manuals and user guides at all-guides.com

Summary of Contents for 25C374

Page 1: ...in 55 55 55 gallon gallon gallon drums drums drums For For For professional professional professional use use use only only only Important Important Important Safety Safety Safety Instructions Instruc...

Page 2: ...nal Agitator Service 14 Parts 15 Models 25C483 and 25C484 15 Models 25C485 25C486 25C487 25C488 17 Models 25C374 25C451 25C480 25C481 19 Accessories 20 Dimensions 21 Models 25C483 and 25C484 21 Models...

Page 3: ...Agitator Approval Approval Approval 25C484 Back Gear Drive Only with Ground Wire Kit ATEX Listed Table Table Table 2 2 2 Models Models Models with with with UL UL UL Listed Listed Listed Explosion Exp...

Page 4: ...on Siphon Siphon Drum Drum Drum Cover Cover Cover Elevator Elevator Elevator and and and Cover Cover Cover Support Support Support Elevator Elevator Elevator Air Air Air Control Control Control Approv...

Page 5: ...ING WARNING FIRE FIRE FIRE AND AND AND EXPLOSION EXPLOSION EXPLOSION HAZARD HAZARD HAZARD Flammable fumes such as solvent and paint fumes in work work work area area area can ignite or explode Paint o...

Page 6: ...k 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 MOVING MOVING PARTS PARTS PARTS HAZARD HAZARD HAZ...

Page 7: ...mage Do not lift the drum cover and agitator without proper assistance Do not walk or stand beneath a raised elevator With With With an an an Elevator Elevator Elevator Mount the drum cover as describ...

Page 8: ...e 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 approximatel...

Page 9: ...hand hand tight is enough to hold the siphon tube in place NOTICE NOTICE NOTICE Barrel Barrel Barrel Heights Heights Heights Vary Vary Vary Loosen the retaining nut on the siphon tube retainer before...

Page 10: ...tor Equipment surfaces and fluid that is heated can become very hot during operation resulting in severe burns To avoid severe burns do not touch hot fluid or equipment Hazardous locations Install a h...

Page 11: ...e no leaks and that all fittings are tight NOTICE NOTICE NOTICE To avoid equipment damage be sure the motor rotation is set in a clockwise rotation when looking down on the motor fan blade and agitato...

Page 12: ...t is being supplied The agitator shaft speed can be calculated by using the formula below or determined by the graph below using the VFD frequency Example 1 AIB x C DIE F Example 2 40 hz I 60 hz x 172...

Page 13: ...e flush the inside of the agitator shaft 33 and clean the agitator blades 34 and the outside of the shaft 7 Reassemble the siphon tube by doing the reverse of steps 2 through 4 Servicing Servicing Ser...

Page 14: ...m nut 18 onto the agitator shaft by turning it clockwise and tighten it hand tight 3 Reposition the pinion gear assembly 10 15 in the lower housing thread the large gear 9 onto the agitator shaft and...

Page 15: ...rts Parts Parts Parts Models Models Models 25C483 25C483 25C483 and and and 25C484 25C484 25C484 Back Gear Back Gear Back Gear Drive Drive Drive 3A4548G 15 All manuals and user guides at all guides co...

Page 16: ...OCKET HEAD CAP M4 x 0 7 x 8 mm 3 18 190976 NUT 50 MM 1 Ref Ref Ref No No No Part Part Part No No No TEST TEST TEST Qty Qty Qty 19 113356 SCREW CAP SOCKET HEAD M6 x 1 x 60 mm 2 20 105489 PIN DOWEL 2 21...

Page 17: ...5 25C485 25C485 25C486 25C486 25C486 25C487 25C487 25C487 25C488 25C488 25C488 Agitator Agitator Agitator with with with or or or without without without Siphon Siphon Siphon 3A4548G 17 All manuals an...

Page 18: ...nits without Siphon 1 Ref Ref Ref No No No Part Part Part No No No Description Description Description Qty Qty Qty 32 117536 SCREW CAP SOCKET HEAD M8 x 1 25 x 25 mm 2 33 24D311 KIT SHAFT AGITATOR incl...

Page 19: ...ls 25C374 35C451 1 103 See 103a m COVER DRUM models 25C480 25C481 103a 190995 COVER BARE 1 103b 104029 STUD GROUNDING 1 103c 180755 WASHER TAB 1 103d 112903 WASHER SPRING LOCK M5 304 Stainless Steel 1...

Page 20: ...rt Part Part No No No Description Description Description 237524 Handles Kit 238250 Siphon Kit 238884 Return Tube Kit 17T255 Accessory Blade Kit Blades are 15 5 inch 39 4 cm diameter assembled 20 3A45...

Page 21: ...ive Model Model Model 25C483 25C483 25C483 Atex Atex Atex Listed Listed Listed Back Gear Back Gear Back Gear Drive Drive Drive Model Model Model 25C484 25C484 25C484 Reference Reference Reference Meas...

Page 22: ...ithout without Siphon Siphon Siphon Models Models Models 25C485 25C485 25C485 25C486 25C486 25C486 UL UL UL Listed Listed Listed Reference Reference Reference Measurement Measurement Measurement in cm...

Page 23: ...els 25C487 25C487 25C487 25C488 25C488 25C488 ATEX ATEX ATEX Listed Listed Listed Reference Reference Reference Measurement Measurement Measurement in cm Reference Reference Reference Measurement Meas...

Page 24: ...dels Models Models 25C374 25C374 25C374 25C451 25C451 25C451 UL UL UL Listed Listed Listed Reference Reference Reference Measurement Measurement Measurement in cm Reference Reference Reference Measure...

Page 25: ...1 25C481 Atex Atex Atex Listed Listed Listed Reference Reference Reference Measurement Measurement Measurement in cm Reference Reference Reference Measurement Measurement Measurement in cm A 14 14 35...

Page 26: ...Agitator Agitator Agitator RPM RPM RPM NOTE NOTE NOTE The power measured includes the VFD power usage ATEX ATEX ATEX Motor Motor Motor Power Power Power Usage Usage Usage Chart Chart Chart Power Powe...

Page 27: ...kg Agitator Blade Span 20 in 50 8 cm Agitator Blade Width 3 in 7 6 cm Wetted Parts 304 SST 304 304L SST Acetal AF Nylon PTFE Siphon Tube ID 3 4 in 19 mm Siphon Kit Threaded Outlet Size 1 npt Maximum A...

Page 28: ...TY AND AND AND DISCLAIMS DISCLAIMS DISCLAIMS ALL ALL ALL IMPLIED IMPLIED IMPLIED WARRANTIES WARRANTIES WARRANTIES OF OF OF MERCHANTABILITY MERCHANTABILITY MERCHANTABILITY AND AND AND FITNESS FITNESS F...

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