Goulds Pumps 3408A - IOM - Manual (Page 28)

FREEZE PROTECTION
Pumps that are shut down during freezing conditions
should be protected by one of the following methods.
1. Drain the pump; remove all liquids from the casing.
2. Keep fluid moving in the pump and insulate or heat the
pump to prevent freezing.
$
! CAUTION
Bearing/Seal Damage Hazard
Do not let heated pump temperature rise above 150°F.
Failure to follow these instructions could result in
property damage and/or moderate personal injury.
CHANGING ROTATION
3408A centrifugal pumps can be operated clockwise or
counterclockwise when viewed from the coupling end of
the pump. If you wish to reverse the suction and discharge
nozzles, this can be accomplished with the same pump as
follows:
IMPORTANT: Refer to the disassembly and assembly
procedures section of this manual for proper
disassembly and assembly techniques:
1. Remove the impeller from the shaft, turn it 180° and
replace it on the shaft.
NOTE: The impeller can only come off from the
outboard end.
2. With the rotating element out of the casing, remove the
casing from the bedplate and turn 180°.
3. Set the rotating element back in the casing and
reassemble the pump.
NOTE: The impeller and casing are in the same
relationship to each other as they were originally. The
shaft and motor are also in the same relationship to
each other as they were originally.
4. Reassemble pump and realign the coupling as called
for in the alignment instructions.
s
! WARNING
Rotating Components Hazard
Do not operate pump without all guards in place.
Failure to follow these instructions could result in seri-
ous personal injury or death, or property damage.
NOTE: Unless the motor rotation is reversed, the
impeller will run backward.
Figure 11: Correct Relationship of Impeller and Casing
20
3408A IOM 6/08