Viking Pump TSM420: HL-LL 4925 - Manual (Page 18)

SECTION TSM 420
PAgE
18 Of 18
ISSUE E
VIKING PUMP, INC. • A Unit of IDEX Corporation •
Cedar Falls, IA 50613 USA
© 3/2013 Viking Pump Inc.
All rights reserved
TECHNICAL SERVICE MANUAL
WARRANTY
Viking warrants all products manufactured by it to be
free from defects in workmanship or material for a
period of one (1) year from date of startup, provided
that in no event shall this warranty extend more than
eighteen (18) months from the date of shipment from
Viking. The warranty period for Universal Seal series
pumps ONLY (Universal Seal models listed below) is
three (3) years from date of startup, provided that in
no event shall this warranty extend more than forty-two
(42) months from the date of shipment from Viking.
UNDER NO CIRCUMSTANCES SHALL VIKING BE
LIABLE UNDER THIS WARRANTY OR OTHERWISE
FOR SPECIAL, INCIDENTAL, INDIRECT,
CONSEQUENTIAL OR PUNITIVE DAMAGES OF ANY
KIND, INCLUDING, BUT NOT LIMITED TO, LOST
OR UNREALIZED SALES, REVENUES, PROFITS,
INCOME, COST SAVINGS OR BUSINESS, LOST OR
UNREALIZED CONTRACTS, LOSS OF GOODWILL,
DAMAGE TO REPUTATION, LOSS OF PROPERTY,
LOSS OF INFORMATION OR DATA, LOSS OF
PRODUCTION, DOWNTIME, OR INCREASED
COSTS, IN CONNECTION WITH ANY PRODUCT,
EVEN IF VIKING HAS BEEN ADVISED OR PLACED
ON NOTICE OF THE POSSIBILITY OF SUCH
DAMAGES AND NOTWITHSTANDING THE FAILURE
OF ANY ESSENTIAL PURPOSE OF ANY PRODUCT.
THIS WARRANTY IS AND SHALL BE VIKING’S SOLE
AND EXCLUSIVE WARRANTY AND SHALL BE IN
LIEU OF ALL OTHER WARRANTIES, EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED
TO, ALL WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND
NON-INFRINGEMENT ALL OF WHICH OTHER
WARRANTIES ARE EXPRESSLY EXCLUDED.
See complete warranty at www.vikingpump.com.
figure 24 shows a typical schematic of a Continuously
Recirculating System with vertical accumulator Space
or other physical requirements may make a horizontal
accumulator more practical As long as the minimum
submergence requirement of 4’ of liquid is maintained, the
arrangement of the accumulator is of little consequence
to good pump operation The schematic is intended only
to show in a general way piping and connections directly
related to the pump No attempt has been made to show all
the necessary controls, valves, regulators, gauges, etc that
are necessary for successful operation of this portion of an
ammonia refrigeration system
fIgURE 24
Schematic of Liquid Ammonia Recirculating System
Pumps on this system run continuously as long as there
is a load on the evaporators The evaporators are flooded
with several times the amount of ammonia needed; this
helps maintain an even temperature in the evaporators The
pressure or head differential across the pump is generally very
low; the only head the pump must develop is that required to
over come any elevation head and any line losses
THROTTLE
VALVE
LIQUID
AMMONIA MAKE
UP LINE fROM
HIgH PRESSURE
RECEIVER
ACCUMULATOR
THROTTLE VALVE
EVAPORATORS
RETURN LINE
fROM PUMP
MOUNTED
RELIEf VALVE
TO
COMPRESSOR
VIKINg REfRIgERATION
AMMONIA PUMP
HEAVY-DUTY REfRIgERATION AMMONIA PUMPS
SERIES 4925
SIZES HL - LL