Crane Crown B12 Series, Инструкция по установке и эксплуатации

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7
SECTION B: GENERAL INFORMATION
B-1) To the Purchaser:
Congratulations! You are the owner of one of the fi nest
pumps on the market today. Crown® Pumps are products
engineered and manufactured of high quality components.
Over one hundred years of pump building experience along
with a continuing quality assurance program combine to
produce a pump which will stand up to the toughest pumping
projects.
This pump manual will provide helpful information concerning
installation, maintenance, and proper service guidelines.
B-2) Receiving:
Upon receiving the pump, it should be inspected for
damage or shortages. If damage has occurred, fi le a claim
immediately with the company that delivered the pump. If the
manual is removed from the crating, do not lose or misplace.
B-3) Storage:
Short Term -
Crown Pumps are manufactured for effi cient
performance following long inoperative periods in storage.
For best results, pumps can be retained in storage, as factory
assembled, in a dry atmosphere with constant temperatures
for up to six (6) months.
Long Term - Any length of time exceeding six (6) months, but
not more than twenty four (24) months. The units should be
stored in a temperature controlled area, a roofed over walled
enclosure that provides protection from the elements (rain,
snow, wind blown dust, etc.), and whose temperature can be
maintained b40 deg. F and +120 deg. F.
If extended high humidity is expected to be a problem, all
exposed parts should be inspected before storage and all
surfaces that have the paint scratched, damaged, or worn
should be recoated with a water base, air dry enamel paint.
All surfaces should then be sprayed with a rust-inhibiting oil.
B-4) Service Centers:
For the location of the nearest Crown Service Center, check
your representative or Crane Pumps & Systems, Inc., in
Piqua, Ohio, telephone (937) 778-8947 or Crane Pumps &
Systems Canada, Bramton, Ontario, (905) 457-6223.
SECTION C: INSTALLATION RECOMMENDATIONS:
C-1) Location:
Locate the pump as close to the source of supply as possible.
Although the pump will operate on suction lifts of 25 feet, it is
desirable to keep the suction lift less than 15 feet, if possible.
The closer the pump can be located to the source of supply,
the faster the pump will prime and a greater capacity can be
pumped.
All pump units rotate clockwise when looking from the motor
end (driven end) of the pump. Also, rotation arrows are
located on the pump. On three phase units with threaded
suction/discharge connections the impellers are threaded on
the shaft and it is necessary to slide one half of the fl exible
coupling back when checking rotation in order to eliminate
the possibility of unscrewing the impeller and damaging the
pump.
NOTE: Where impellers thread on pump shaft, never
check the direction of electric motor rotation without fi rst
disconnecting fl exible coupling.
Locate the pump on a fi rm footing to make sure the pump
will not move due to vibration. Flex coupled and V-belt
driven units should be permanently grouted onto a cement
foundation. The pumps should be level to provide favorable
operating conditions. In addition, the fl exible coupling should
be realigned after grouting in order to eliminate excessive
wear on the coupling.
Allow a minimum of 18 inches in front of the pump case cover
or hatch cover to permit easy removal and access to the
interior of the pump. On belt driven units, allow a minimum
of 10 inches at the shaft end to permit easy removal of the
pedastal or rotating cartridge.
C-2) Suction:
It is advisable to use a suction line of the same size as the
pump port size. All horizontal suction lines should slope up to
the pump to avoid trapped air pockets. An adjustable stand,
pipe clamp or fl oor fl ange must be installed to support the
weight of the suction line. On suction lifts less than 5 feet, it is
sometimes possible to increase capacity slightly by oversizing
the suction line, but oversized suction pipe on high suction
lifts will create priming problems. Using a smaller suction line
than the pump port size can cause internal damage to the
pump.
The suction line must not have holes, even small holes. The
smallest air leak in the suction line may prevent the pump
from priming. Coat all threaded connections in the suction
line with pipe thread compound to insure an air tight joint. In
addition, suction fl anges should be pulled up tight to prevent
air leaks. Where fi ber gaskets are used, coat them with
grease.
Use a strainer on suction line to prevent the entrance of
oversize solids. This strainer should be submerged deep
enough to prevent air from being drawn into the suction line,
thus reducing the pump’s capacity and pressure.
CAUTION! - This pump should not be operated
without a strainer on the end of the suction line
to prevent sticks, stones, rags and other foreign
matter from being drawn into the impeller. The
strainer should be cleaned regularly to insure full
fl ow.
C-3) Discharge:
Connect discharge hose or pipe to discharge on pump.
If Discharge hose is used, protect it from being driven over.
Do not use quick closing check valves.
SECTION D: OPERATION RECOMMENDATIONS:
1. Fill the pump case with liquid prior to starting the pump. A
self priming pump does require the case to be at least 2/3 full
of liquid in order to self prime. Operate at suffi cient speed to
prime pump. Generally speaking, the pump will prime faster if
it is operated at a fast speed.
2. Place the self-feeding grease lubricator in operation by
turning the wing nut on the threaded plunger shaft counter
clockwise as far as it will go. Do not force the plunger into the
grease cup as this can cause a seal failure. See Maintenance
Recommedations, Paragraphs 1 and 2 for instructions on
fi lling the grease cup.