Armstrong 4280 Series Panduan Petunjuk Pemasangan dan Pengoperasian - Halaman 8
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Halaman Cetak
i nstal la ti on &
o p era t i n g i n stru ction s
8
6.
gener al care
Vertical In-Line pumps are built to operate without periodic
maintenance, other than motor lubrication on larger units. A
systematic inspection made at regular intervals, will ensure
years of trouble-free operation, giving special attention to the
following:
• Keep unit clean
• Provide the motor with correctly sized overload protection
• Keep moisture, refuse, dust or other loose particles away
from the pump and ventilating openings of the motor.
• Avoid operating the unit in overheated surroundings
(Above 40°c / 10 0°f).
warning:
Whenever any service work is to be performed on
a pumping unit, disconnect the power source to the
driver, lock it off and tag with the reason. Any pos-
sibility of the unit starting while being serviced must
be eliminated.
• If mechanical seal environmental accessories are
installed, ensure water is flowing through the sight
flow indicator and that filter cartridges are replaced as
recommended. (See Armstrong files 43 . 85 & 43 . 86 for
seal environmental instructions).
7.
lubrication
Pump
• Lubrication is not required. There are no bearings in the
pump that need external lubrication service.
• Large Series 430 0 units are installed with a shaft bushing
located beneath the impeller that is lubricated from the
pump discharge. This bearing is field removable for ser-
vice on the 20×20×19 size without disturbing the motor
or other major pump components.
• Service instructions for the lower bearing is to be found
on File No: 43 . 8 05 .
Motor
• Follow the lubrication procedures recommended by the
motor manufacturer. Many small and medium sized
motors are permanently lubricated and need no added
lubrication. Generally if there are grease fittings evident
the motor needs periodic lubrication. None if not.
• Check the lubrication instructions supplied with the mo-
tor for the particular frame size indicated on the motor
nameplate.
Series 4300, 4360 and 4380
Vertical in–line pumps
Mechanical Seal
• The mechanical seal is fitted with a flush line. The seal
is flushed from discharge of the pump casing on Series
430 0 pumps and is flushed/vented to the suction on
close coupled pumps, Series 436 0 & 438 0.
• The Series 430 0 pump is flushed from the pump
discharge because the mechanical seal chamber is
isolated from the liquid in the pump by a throttle bushing.
Because the seal chamber is isolated, seal environmental
controls such as filters and separators, when installed in
the Series 430 0 flush line are very effective, as only the
seal chamber needs cleansing, and will prolong seal life in
hvac systems.
• Do not run the pump unless properly filled with water as
the mechanical seals need a film of liquid between the
faces for proper operation.
• Mechanical seals may 'weep' slightly at start-up. Allow
the pump to continue operating for several hours and
the mechanical seal to 'seat' properly prior to calling for
service personnel.
• The following Armstrong files are available for mechanical
seal replacement instructions:
436 0
438 0
• Series
&
430 0
• Series
:
tcz
• P-Base and
Motor Frames –
file 43 . 88
• Motor Frame –
caution
Do not use oil, Vaseline or other petroleum or silicon
based products for seal elastomer lubrication.
Otherwise elastomer swelling may occur, causing
seal failure. Recommended: International Products Corp
p-8 0 Rubber Lubricant Emulsion in www.ipcol.com
caution
The permissible tds levels are :
a SSiC Vs C – 2000ppm max
b SSiC Vs SSiC – 40 0 0ppm max
In case the water exceeds permissible tds levels, corrosion
or fouling may occur resulting in seal failures. It is necessary
to maintain the water quality with proper water treatment
program.
file 43 . 81
:
file 43 . 84tc