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TECHNICAL SERVICE MANUAL  

VIKING PUMP, INC.

 

 A Unit of IDEX Corporation

 

 

Cedar Falls, IA 50613 USA

© 5/2007 Viking Pump Inc. 

 All rights reserved

SECTION TSM 845.1
PAGE

13 Of 13

ISSUE

C

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.

DANGER !

Before  opening  any  Viking  pump  liquid 

chamber  (pumping  chamber,  reservoir,  

relief  valve  adjusting  cap  fitting,  etc.) 

be sure:
1.  That any pressure in the chamber has 

been  completely  vented  through  the 

suction  or  discharge  lines  or  other 

appropriate openings or connections.

2.  That the driving means (motor, turbine, 

engine, etc.) has been “locked out” or 

made non-operational so that it cannot 

be started while work is being done on 

pump. 

3.  That  you  know  what  liquid  the  pump 

has been handling and the precautions 

necessary to safely handle the liquid. 

Obtain  a  material  safety  data  sheet 

(MSDS) for the liquid to be sure these 

precautions are understood. 

failure 

to 

follow 

above 

listed 

precautionary  measures  may  result  in 

serious injury or death.

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.

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

 figure 21 on page 12.

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.

ASSEMBLY: RELIEf VALVE

Reverse procedures outlined under Disassembly.  If valve is 

removed  for  repairs,  be  sure  to  replace  in  original  position.  

Relief  valve  adjusting  screw  cap  must  always  point  toward 

suction side of pump.  If pump rotation is reversed, remove 

relief valve and turn end for end.  

See figure 3 on page 3.  

Also refer to 

PUMP ROTATION on page 7.

DISASSEMBLY: RELIEf VALVE

Summary of Contents for 823

Page 1: ... 10 Adjusting Head Gasket End Clearance 11 Assembly D Series Coupling 11 Troubleshooting 12 Pressure Relief Valves 12 Pressure Adjustment 12 Disassembly Relief Valve 13 Assembly Relief Valve 13 FIGURE 1 LS 825 MD D290 R Complete Unit on Base with Viking C Reducer FIGURE 2 QS 825 MD D450 B Bearing Carrier Footed Pump and Coupling Bracket Jacketed Pump Bracket INTRODUCTION The illustrations used in ...

Page 2: ...Viking Pump product catalog DO NOT attempt to dismantle a pressure relief valve that has not had the spring pressure relieved or is mounted on a pump that is operating AVOID contact with hot areas of the pump and or drive Certain operating conditions temperature control devices jackets heat tracing etc improper installation improper operation and improper maintenance can all cause high temperature...

Page 3: ...This may be a relief valve mounted directly on the pump an inline pressure relief valve a torque limiting device or a rupture disk Do not rely on decoupling of magnets for protection from over pressure this may result in damage to the magnets pump or other equipment 2 If pump rotation is to be reversed during operation pressure protection must be provided on both sides of the pump 3 The relief val...

Page 4: ...table alternate SUGGESTED REPAIR TOOLS The following tools are required to properly repair a Mag Drive pump These tools are in addition to standard mechanics tools such as open end wrenches socket set pliers screw drivers etc Most items can be obtained from an industrial supply house 1 Soft headed hammer 2 Allen wrenches 3 Spanner wrench adjustable pin type for use on end cap Source 482 J H Willia...

Page 5: ...e 19 Idler Bushing 29 Capscrews for Relief Valve 10 Locating Pin 20 Idler Bushing FIGURE 5 EXPLODED VIEW LQ LS SIZE MAG DRIVE PUMPS FIGURE 6 EXPLODED VIEW Q QS SIZE MAG DRIVE PUMP QS SHOWN ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION 1 Brkt Gasket Pilot Face 10 Locating Pin 19 Idler Bushing 2 Brkt Gasket Pilot O D 11 Pipe Plugs 20 Head Gaskets 3 Bracket 12 Casing 21 Idler Pin 4 Capscrews for...

Page 6: ...re original parts and in good condition usually the rest of the pump is also in good condition FIGURE 7 EXPLODED VIEW D SERIES COUPLING ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION 1 Locknut 9 Jack Screws 17 Outer Magnet Assembly 2 Lockwasher 10 Set Screws 18 Bracket 3 Endcap 11 Insert 19 Temperature Monitor Optional 4 Lip Seals 12 Capscrews Bearing Housing 20 Pipe Plug 5 Bearing Spacer Oute...

Page 7: ...on the suction side of the head Remove the pipe plug and reinstall in the other similar hole in the head Follow the procedure for pump assembly Reverse the relief valve orientation so the adjusting cap points towards suction port PORT ARRANGEMENT Standard configuration as viewed from the pump shaft is right angle porting LQ LS Q the suction port for clockwise rotation is at 9 o clock The top port ...

Page 8: ...down on a clean flat surface preferably not steel to keep from rolling around Remove temperature probe if present FIGURE 11 FIGURE 12 FIGURE 13 FIGURE 14 7 Insert a brass bar through a port between two rotor teeth and loosen the capscrew holding the inner magnet onto the shaft See Figure 13 The 0 437 capscrew has right hand threads therefore turn it counterclockwise THE INNER MAGNET HAS A VERY STR...

Page 9: ...If the seal is in good condition slide the endcap over the outer spacer then thread into bearing housing Center the inner spacer so the shaft will slide through the two bearings Thread in the end cap until it makes contact with the outer TRB Tighten the endcap by hand until tight and secure in position with the 2 setscrews 3 Insert the outer magnet shaft through the bearings and the spacers When t...

Page 10: ...gaskets have been put in place 5 Coat the idler pin with suitable lubricant and place the idler on the idler pin in head 6 The head can now be assembled on the pump Tilt the top of the head away from the pump slightly until the crescent enters the inside diameter of the rotor and rotate the idler until its teeth mesh with the rotor teeth Line up mark on head and casing which were previously marked...

Page 11: ...all one 015 and 007 gasket onto the head With the idler on idler pin place head into the pump casing With capscrews tight the feeler gage should fit snugly otherwise gaskets should be added or removed until the proper clearance is attained See Figure 19 FIGURE 19 FIGURE 20 PROCEDURE B If the pump is in the pipeline and not accessible through ports remove the head and remove gaskets Put the head ba...

Page 12: ...he strainer is partially clogged An air leak somewhere in suction line The pump may be running too slow Is motor the correct speed and wired up correctly The pressure relief valve is set too low stuck open or has a damaged poppet or seat The bypass line around the pump is partially open The pump is worn out or has too many gaskets Pump takes too much power stalls motor The liquid is more viscous t...

Page 13: ...FOR A PARTICULAR PURPOSE No officer or employee of IDEX Corporation or Viking Pump Inc is authorized to alter this warranty DANGER Before opening any Viking pump liquid chamber pumping chamber reservoir relief valve adjusting cap fitting etc be sure 1 That any pressure in the chamber has been completely vented through the suction or discharge lines or other appropriate openings or connections 2 Th...

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