Specifications

Page Number - 3
CENTRO-MATIC
®
PUMP, MODEL 85471, 85472 & 85473
Form 404064
run if wired incorrectly. Wire the pump motor and vent valve (if
used) as shown in Illustrations 1.
Please refer to the 85567 operation manual, section C8, page
298, series “A” for setting the pump speed control on the 24VDC
motor.
Low Level Kit (Model 85490)
Low Level Kit is recommended whenever higher viscosity
greases or lower temperatures are encountered and when
an external indicator of lubricant level is desired. The kit is
composed of a follower with wiper and a level indicator gage
located on the cover of the reservoir.
PUTTING PUMP INTO OPERATION
Filling Reservoir
• Tobulkllthereservoir,removethelowerandupperpipe
plugs from the side of the reservoir (see Figure 4). Attach
 theappropriatebulk-llingpumptothelowerinlet(3/4
NPT). Fill reservoir until grease appears at the top 1/2
 NPTventhighlevelport.Removethebulk-llingpump.
Replace both pipe plugs.
• Tousethereservoirwithave-gallonpailoflubricant
 (Model85571only),rstremovethesixboltsthatsecure
the lid. Remove the entire assembly of lid, pump and vent
 valve.Usingpipewrenchorvicegrips,removetheller
nipple extension (43) (View A-A) attached inside the
reservoir at the 3/4 NPT inlet nipple. Insert opened pail of
lubricant and reattach lid and pump assembly.
Note: Ifvegallonpaillubricationistobeused(forModel
85571 only), then the wing screw kit 273431 should be
used in place of the hex bolt (10). Do not use follower
assembly with the 5 gallon pail.
In Case of System Malfunction
(See Trouble Shooting Chart Page 9)
• UsetheTrouble Shooting Charts to determine where to
look if problems occur.
• Seethesectionsbelowforreplacementandrepairof
 specicareasofthecheckvalve,ventvalveorsafety
unloader valve.
• Eachpartisidentiedwithanumberkeyedtothe
matching part on the illustrated views.
• Generalrecommendationsoftoolsrequiredarealso
 speciedineachstep.
• PayparticularattentiontotheWarning statements to
prevent personal injury and possible damage to pump
components.
Outlet Check Service
(See Figures 2, Page 6)
Thepumpwillnotbuildupsufcientlubricantpressureif
the outlet check (21) is fouled. Foreign material may lodge
beneath the Check Ball (49) or between check disc (46) and
the seat of bushing assembly (45). Sealing surfaces of the
seat must form a perfect seal. Clean parts or replace if pitted,
worn or scored.
1. Turn off and disconnect the electric power supply to the
pump assembly.
2. Standard tools required are a bench mounted vice, a set of
open end wrenches ranging from 7/16” to 1-1/2”, a large
24” (600 mm) adjustable wrench and a smaller 10”
(254 mm) adjustable wrench.
3. Remove bolts, nuts and lock washers (25, 26 & 27).
4. Loosen adapter union (20). Set vent valve assembly to
the side.
5. Remove entire outlet check assembly (21) by loosening
adapter (22) from pump outlet.
6. Remove adapter (22) from outlet check assembly (21).
7. Remove outlet connector (50) from bushing (45).
8. Remove ball check seat (47) from outlet connector (50).
9. Inspect all check components (46, 45, 47 & 49) for
presence of foreign material, scoring and or other
damage, which may cause internal leakage. Replace
components if damage is found.
10. If foreign material is present, clean components and
reassemble. Be sure to always replace gaskets (44) &
(48) whenever vent valve is disassembled. Reverse the
above procedure to reassemble. Torque check
assembly to 100 ft.-lbs. (13.5 N-M).
Follower (see Figures 4, 5 & 6 Page 6)
If follower wiper appears to be damaged or does not wipe the
sides of the container effectively service may be necessary.
1. Disconnect electric supply from pump.
2. Remove the eight bolts (10) and lock washers (9) which
attach the cover to the reservoir.
3. Lift the entire pump, vent valve, cover assembly and
follower out of the reservoir.
Whenllingthereservoir,cautionshouldbeusedas
extreme pressure can cause damage to the reservoir or
serious personal injury.
MAINTENANCE & REPAIR
General Maintenance
• Keepareaaroundpumpclean.Cleanoffllingportarea
 priortollingreservoir.Cleanareaaroundllerafterlling
as lubricants will attract dirt.
• Keeplubricantscleanandfreeofdirtanddebris.
• Whenreplacinggreasepailsbeespeciallycarefulto
prevent any foreign matter from entering the grease pail or
contaminating the grease, as it adheres to the pump.