Aurora of America 344A User Manual

SECTION 6 ITEM 340
DATED JUNE 1998

SUPERSEDES ITEMS 341, 342, 344
DATED MARCH 1992

© 1992 AURORA PUMP
NO. AURORA, ILLINOIS

NOTE

This repair manual is applicable to pump Models 341A,
342A and 344A. All photos illustrate Model 344A.

Read and understand all warnings before installation or servic-
ing pump.

OPERATIONAL LIMITS: *
Maximum Operating Pressure:

175 psi at Temperatures
to 150

O

F  (65.6°C)

Maximum Operating Temperature:

225°F  (107°C)

* See ASTM A126/ANSI B16.1 for pressure/temperature rat- 

ings of flanges.

SERVICE

Your Aurora pump requires no maintenance other than periodic
inspection,  occasional  cleaning  and  lubrication  of  bearings
(MODEL  344A  only).  The  intent  of  inspection  is  to  prevent
breakdown, thus obtaining optimum service life. The liquid end
of the pump is lubricated by the fluid being pumped and there-
fore does not require periodic lubrication. The motor, however
may  require  lubrication,  in  which  case,  the  motor  manufactur-
er’s recommendation should be followed.

LUBRICATION OF IMPELLER SHAFT BEARINGS

The  MODEL  344A  pump  is  available  with  three  options  for
lubricating the shaft bearings. They are:

1. Regreasable (standard)
2. Oil Lubrication
3. Sealed Bearings, Permanent Lubrication

Regreasable  bearings  will  require  periodic  lubrication  and  can
be accomplished by using the zerk or lubrication fittings in the
cartridge cap and power frame. Lubricate the bearings at regu-
lar  intervals  using  a  grease  of  high  quality.  Polyurea  base 

Electrical Shock Hazard

All electrical connections are to be made by a qualified elec-
trician in accordance with all codes and ordinances. Failure
to  follow  these  instructions  could  result  in  serious  personal
injury, death or property damage. 

Electrical Overload Hazard

Insure  all  motors  have  properly  sized  overload  protection.
Failure  to  follow  these  instructions  could  result  in  serious
personal injury, death or property damage.

Sudden Start-Up Hazard

Disconnect  and  lockout  power  source  before  servicing.
Failure  to  follow  these  instructions  could  result  in  serious
personal injury, death or property damage.

Hot Surface Hazard

If  pumping  hot  water,  insure  guards  or  proper  insulation  is
installed  to  protect  against  skin  contact  to  hot  piping  or
pump components. Failure to follow these instructions could
result in serious personal injury, death or property damage.

Spraying Water Hazard

When servicing pump replace all gaskets and seals. Do not
re-use  old  gaskets  or  seals.  Failure  to  follow  these  instruc-
tions could result in serious personal injury, death or proper-
ty damage.

High Pressure Hazard

The  pump  is  rated  at  a  maximum  of  175  psi  at  150°F.  Do
not  exceed  this  pressure.  Install  properly  sized  pressure
relief  valves  in  system.  Failure  to  follow  these  instructions
could  result  in  serious  personal  injury,  death  or  property
damage.

Expansion Hazard

Water  expands  when  heated.  Install  properly  sized  thermal
expansion  tanks  and  relief  valves.  Failure  to  follow  these
instructions could result in serious personal injury, death or
property damage.