Barnes 2ADG3, Installation And Operation Manual

7

6.  TO CHANGE DIAPHRAGM:
 

A. Rotate connecting rod and crank to down position.

B. Remove four bolts at outer edge to take off water box.

C. Remove three bolts at connecting rod and take out

 diaphragm.
 

D. Replace diaphragm with type designed for heavy duty

service as originally supplied with pump. Raised ridges 

on diaphragm must fi t in grooves in connecting rod 

and bottom clamp plate. Insert three bolts and draw up

 nuts 

snug.

E. Center diaphragm carefully over water box and clamp

with four bolts to pump frame.

7.  TO CHANGE VALVE RUBBERS:
 

A. Remove suction and discharge connections and

remove valve rubbers.

B. Place new valve rubber between weight and binder

and insert and tighten 2 screws that hold them together.

Tighten fi rmly but not so rubber is distorted, causing poor

 seating.
 

C. Dowel pin in suction connection and on discharge side

of waterbox must enter hole in valve rubber to locate

valve in correct relation to valve opening.

8.  Diaphragm pumps will handle fl uids containing
 

considerable solids, however if mixture is too heavy to

be pumped, liquid must be added until it becomes

suffi ciently fl uid for pumping.

9.  Neoprene and other rubbers can be furnished for the
 

diaphragm and valve rubbers when pumping fl uids

containing considerable oils, greases or chemicals.

10. ENCLOSED GEAR CASE:
 

Change the transmission oil after the fi rst 40 hours of

operation. Use an SAE80 -90 wt. EP gear lube.

Capacity is 20 oz. (550ml). Fill to the oil level plug in 

the transmission cover. Check oil level periodically

and change oil every 400 hours.

11.  Change engine oil per manufacturer’s specifi cations.
 

Check oil level frequently.

SECTION E: TROUBLE SHOOTING

If your pump does not prime or operate properly, check the 
following:

1.  Pump may be too high above or far from water.

2.  Leaks in suction hose or hose connection to pump.
 

Check if hose inner lining has loosened. If loose,

pump suction will cause lining to collapse and block hose.

3.  Valves may not be seating properly due to accumulation
 

of residue or wear. Pour water in suction and discharge

chambers to help seal valves.

4.  Check diaphragm for breaks or leaks.

5.  Make sure that end of suction line is in position to allow
 

water to enter; it may be buried in muck or blocked in 

 other 

ways.

SECTION: F REPLACEMENT PARTS

F-1 ORDERING REPLACEMENT PARTS:

When ordering replacement parts, ALWAYS furnish the 
following information:

1. Pump model number. (F-2)
2. Pump serial number.(F-3)
3. Part description.
4. Item part number.
5. Quantity required.
6. Shipping instructions.
7. Billing Instructions.

F-2 MODEL NUMBER:

This designation consist of numbers and letters which 
represents the discharge size, series horsepower, motor 
phase and voltage, speed and pump design. This number is 
used for ordering and obtaining information.

F-3 SERIAL NUMBER:

The Serial Number block will consist of a six digit number, 
which is specifi c to each pump and may be preceded by 
a alpha character, which indicates the plant location. This 
number will also be suffi xed with a four digit number, which 
indicates the date the unit was built (Date Code). 

EXAMPLE: A012345 0490.

Reference the six digit portion (Serial Number) of this number 
when referring to the product

HOME

MENU

Manual Index