Technical service manual, Pressure adjustment important, Disassembly – Viking Pump TSM141.2: LS-M 125/4125 User Manual

Page 12

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SECTION TSM 141.2
PAgE

12 Of 12

ISSUE

f

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.

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 the valve will

allow while pump is in operation.

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.

PRESSURE ADJUSTMENT

IMPORTANT

Mark valve and head before disassembly to insure proper

reassembly.
1. Remove valve cap.
2. Measure and record length of extension of adjusting

screw.

Refer to “A” on figures 14 and 15.

3. Loosen locknut and back out adjusting screw until spring

pressure is released.

4. Remove bonnet, spring guide, spring and poppet from

valve body. Clean and inspect all parts for wear or

damage and replace as necessary.

DISASSEMBLY

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.

HEAVY-DUTY BRACKET MOUNTED PUMPS

SERIES 125 AND 4125

SIZES LS, Q, QS, M

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