MODELS A2 and A2H MULTI-PURPOSE DRUM PUMP
INSTRUCTION MANUAL
Thank you for purchasing either a Macnaught model
A2 or A2H Multi-Purpose Drum Pump.
Please read and retain this instruction sheet to assist
you in the maintenance of this quality product.
Model A2H is supplied complete with hose
assembly and nozzle.
Note: Models A2 and A2H are supplied with various
seals to suit a wide variety of chemicals and solvents.
If you require replacement seals order service kit
A2-1K.
FEATURES
* Fits 60-205 litre drums.
* Convenient bung opener cast on the pump head.
* Pumps 250 ml/stroke (approx).
* Pumps most liquids up to SAE90 viscosity.
* Nickle chrome plated pump rod and deep packing for
smooth action and long life.
* 19mm hose can be fitted.
* Self cleaning valves help prevent blockages.
* Brass piston rings for efficient pumping.
AA8
0206
0007
DESCRIPTION
The A2 and A2H Multi Purpose transfer pump is a high
quality transfer pump designed to pump diesel fuel,
lubricating oils (up to SAE 90) and a wide range of
non-corrosive fluids. Simply by replacing the suction tube
‘O’ring with one of the other O’rings supplied with the
pump you will be able to pump a wide range of solvents
and chemicals (Refer to the compatibility chart for the
correct “O’ring selection)
Model A2H
TROUBLE SHOOTING
TROUBLE
CAUSE
REMEDY
Hard to pump
Pump fails to
prime
a) Adjust gland nut
b) Adjust handle position refer to Fig 2
c) Replace piston rod and piston
assembly
a) Footvalve ball is not seating
.
b) Piston valve is damaged
and is not seating
a) Remove the footvalve assembly
from the pump, clean and reseat the
footvalve ball. Using sealant,
reassemble the footvalve assembly
to the pump.
b) Replace the Piston Rod and Piston
assembly.
Fig 1
Fig 2
a) Gland nut is screwed down
too tightly.
b) Handle is positioned on the
wrong setting for heavy oils.
c) Bent piston rod
