Xylem 8200 Series Base Mounted Centrifugal Fire Pumps AC2675 REV.C - Manual (Page 19)

b. Check and record pressure gauge
readings for future reference.
c. Check and record voltage, amperage per
phase, and kw if an indicating wattmeter is
available.
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d. Check bearings for lubrication and
temperature. Normal temperature is 180°
maximum.
e. Make all pump output adjustments with
the discharge line.
CAUTION: Cavitation Damage Hazard
Do not throttle the suction line to adjust the
pump output. Failure to follow these instructions
could result in property damage and/or moderate
personal injury.
FREEZING PROTECTION
Pumps that are shut down during freezing
conditions should be protected by one of the
following methods.
a. Drain the pump; remove all liquids from
the casing.
b. 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.
FIELD TESTING
A typical performance curve for a specific pump
can be obtained from AC Fire Pump Systems.
This can be used in conjunction with a field test,
tests and curves are based on the Hydraulic
Institute Standards. Any field test must be
conducted according to these Standards.
Unless otherwise specifically agreed, all capacity,
head, and efficiencies are based on shop tests
when handling clear, cold, fresh water at a
temperature not over 85°F.
Appendix “C” (Pages 36-37) contains a field test
report sheet and some useful equations which can
be used when conducting a field test.
MAINTENANCE
GENERAL MAINTENANCE
Operating conditions vary so widely that to
recommend one schedule of preventative
maintenance for all centrifugal pumps is not
possible. Yet some sort of regular inspection must
be planned and followed. We suggest a
permanent record be kept of the periodic
inspections and maintenance performed on your
pump. This recognition of maintenance procedure
will keep your pump in good working condition,
and prevent costly breakdown.
One of the best rules to follow in the proper
maintenance of your centrifugal pump is to keep a
record of actual operating hours. Then, after a
predetermined period of operation has elapsed,
the pump should be given a thorough inspection.
The length of this operating period will vary with
different applications, and can only be determined
from experience. New equipment, however,
should be examined after a relatively short period
of operation. The next inspection period can be
lengthened somewhat. This system can be
followed until a maximum period of operation is
reached which should be considered the operating
schedule between inspections.
MAINTENANCE OF PUMP DUE TO FLOOD
DAMAGE
WARNING: Unexpected Startup Hazard
Disconnect and lockout power before
servicing. Failure to follow these instructions could
result in serious personal injury or death, or
property damage.
WARNING: Electrical Shock Hazard
Electrical connections to be made by a
qualified electrician in accordance will all
applicable codes, ordinances, and good practices.
Failure to follow these instructions could result in
serious personal injury or death, or property
damage.
The servicing of centrifugal pumps after a flooded
condition is a comparatively simple matter under
normal conditions.
Bearings are a primary concern on pumping units.
First, dismantle the bearings; clean and inspect
them for any rusted or badly worn surfaces. If
bearings are free from rust and wear, reassemble
and relubricate them with one of the
recommended pump lubricants. Depending on the
if one is required. All AC Fire Pump Systems