Technical service manual, Assembly, Pressure adjustment – Viking Pump TSM151.1: H-LL 123/4123 User Manual

Page 13: Important, Warranty

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ASSEMBLY


Reverse procedures outlined under Disassembly. If valve is
removed for repairs, be sure to replace in same position.
Relief valve adjusting screw cap must always point towards
suction side of pump. If pump rotation is reversed, remove
relief valve and turn end for end. Refer to Figures 1, 2, and
3, page 1.

PRESSURE ADJUSTMENT


If a new spring is installed or if pressure setting of
pressure relief valve is to be changed from that which the
factory has set, the following instructions must be
carefully followed.

1. Carefully remove valve cap, which covers adjusting

screw.

Loosen locknut, which locks adjusting screw so
pressure setting will not change during operation of
pump.

2. Install a pressure gauge in discharge line for actual

adjustment operation.

3. Turn adjusting screw in to increase pressure and out

to decrease pressure.

4. With discharge line closed at a point beyond

pressure gauge, gauge will show maximum pressure
valve will allow while pump is in operation.


IMPORTANT


In ordering parts for pressure relief valve, always give
model number and serial number of pump as it appears
on nameplate and name of part wanted. When ordering
springs, be sure to give pressure setting desired.

DANGER

BEFORE STARTING PUMP, BE SURE ALL DRIVE

EQUIPMENT GUARDS ARE IN PLACE.

FAILURE TO PROPERLY MOUNT GUARDS MAY

RESULT IN SERIOUS INJURY OR DEATH.

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. If, during said warranty period, any products

sold by Viking prove to be defective in workmanship or

material under normal use and service, and if such

products are returned to Viking’s factory at Cedar Falls,

Iowa, transportation charges prepaid, and if the

products are found by Viking to be defective in

workmanship or material, they will be replaced or

repaired free of charge, FOB. Cedar Falls, Iowa.

Viking assumes no liability for consequential

damages of any kind and the purchaser by acceptance

of delivery assumes all liability for the consequences of

the use or misuse of Viking products by the purchaser,

his employees or others. Viking will assume no field

expense for service or parts unless authorized by it in

advance.

Equipment and accessories purchased by Viking

from outside sources, which are incorporated into any

Viking product, are warranted only to the extent of and

by the original manufacturer’s warranty or guarantee, if

any.

THIS IS VIKING’S SOLE WARRANTY AND IS IN
LIEU OF ALL OTHER WARRANTIES,
EXPRESSED OR IMPLIED, WHICH ARE
HEREBY EXCLUDED, INCLUDING IN
PARTICULAR ALL WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.

No officer or employee

of

IDEX Corporation or Viking Pump, Inc.

is

authorized to alter this warranty.

TECHNICAL SERVICE MANUAL

HEAVY DUTY STEEL EXTERNAL BRACKET MOUNTED PUMPS

SERIES 123 AND 4123

SIZES H-LL


SECTION TSM

151.1

PAGE

13 OF 13

ISSUE

C

VIKING PUMP INC.·

A Unit of IDEX Corporation

VIKING PUMP INC.·

Copyright 2008·

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