Viking pump MAG DRIVE 855 SERIES Technical & Service Manual Download Page 4

Page: 4 / 16

GAUGE

PORT BOSS

STORAGE:

If the pump and coupling are to be stored, drain the pump

and pour non-detergent SAE 30-weight oil into the pump port.

Apply grease to the pump or the coupling shaft extension, if

present or accessible.

Viking suggests rotating the pump shaft every 30 days to

circulate the oil in the pump. The coupling should be stored

in a dry area.

Note

: If the liquid to be pumped reacts with oil, use an

acceptable alternate.

SUGGESTED REPAIR TOOLS:

The following tools are required to properly repair Series 855

pumps. These tools are in addition to standard mechanics’

tools such as open-end wrenches, pliers, screwdrivers, etc.

Most of the items can be obtained from an industrial supply

house.

Soft face hammer

Metric Allen wrenches (for set screws)

Torque Wrench with a locknut socket

External snap ring pliers -

(Viking Part # 2-810-029-375)

Internal snap ring pliers -

(Viking Part # 2- 810-047-999)

Arbor press

Brass bar

Hook style spanner wrench

SECTION TSM

685.2

ISSUE

PAGE 4 OF 16

MAINTENANCE

Series 855 pumps are designed for long, trouble-free service

life under a wide variety of application conditions with a

minimum of maintenance. The points listed below will help

provide long service life.

CLEANING PUMP:

Keep the pump as clean as possible. This will facilitate

inspection, adjustment and repair work.

ROTOR

HEAD

IDLER PIN

RELIEF VALVE

(shown with optional

RV coverplate)

HEAD

GASKET

SEAL

IDLER

CUTAWAY VIEW MAG DRIVE PUMP, MD2-B

WITH BEARING CARRIER ILLUSTRATED

INNER MAGNET

ASSEMBLY

OUTER

MAGNET

ASSEMBLY

BEARING

CARRIER

ASSEMBLY

(Optional)

CANISTER

TEMPERATURE

PROBE HOLE

CANISTER

O-RING

CASING

BUSHING

BRACKET

SHAFT

fIGURE 4

CASING

LUBRICATION:

Some bearing carriers require external lubrication. This must

be applied slowly with a handgun to lubrication fittings every

500 hours of operation with multi-purpose grease, NLGI # 2.

Do not over-grease. Applications involving very high or low

temperatures will require other types of lubrication. Refer to

ESB-515. Consult factory with specific lubrication questions.

Summary of Contents for MAG DRIVE 855 SERIES

Page 1: ...of the part part number and material with the model number and serial number of the pump when ordering repair parts The unmounted pump or pump unit model number and serial number can be found on the nameplate secured to the pump This manual deals only with Series 855 magnetic drive pumps Refer to Figures 1 through 22 for general configuration and nomenclature used in this manual Pump specification...

Page 2: ...drive and or base plate refer to the 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 maint...

Page 3: ...ssure For additional information on pressure relief valves refer to Technical Service Manual TSM000 and Engineering Service Bulletin ESB 31 CAUTION Rare earth magnets used in couplings have extremely strong magnetic fields capable of changing performance or damaging items such as the following Pacemakers Metal Implants Watches Computers disks Credit Cards Completely assembled magnetic couplings wi...

Page 4: ... press 7 Brass bar 8 Hook style spanner wrench SECTION TSM 685 2 ISSUE C PAGE OF 16 MAINTENANCE Series 855 pumps are designed for long trouble free service life under a wide variety of application conditions with a minimum of maintenance The points listed below will help provide long service life CLEANING PUMP Keep the pump as clean as possible This will facilitate inspection adjustment and repair...

Page 5: ...ing 46 Capscrews metric for Relief Valve 6 Req d 36 Rotor and Shaft Assembly 47 Relief Valve table 2 Figure 5 Model number system AS855 M B MD2 B14 B Series Material 5 Cast Iron Port Design M DIN U ANSI Magnetic Coupling Size and Torque Specification Drive Related A 4 and 9 Ft Lbs B 14 32 and 50 Ft Lbs C 40 90 135 and 180 Ft Lbs Size Nominal displacement Magnetic Coupling Design Second generation ...

Page 6: ...s 160 180 ITEM DESCRIPTION ITEM DESCRIPTION ITEM DESCRIPTION 601 Bolt on Hub with Hardware 607 Capscrews metric for Pump 4 Req d 613 Drive Key Outboard Side 602 Outer Magnet Assembly 608 Canister and Bushing Assembly 614 Shaft 603 Bracket 609 Inner Magnet Assembly 615 Drive Key Inboard Side 604 Capscrew jackscrew for Disassembly metric 610 Capscrews metric for Motor or Bearing Carrier 4 Req d 616 ...

Page 7: ... replace the plugs 2 Refer to Figures 4 6 7 8 for names of parts 3 Mark the head and casing before disassembly to insure proper reassembly 4 To inspect the head and pin assembly and idler and bushing assembly remove the head capscrews 5 Remove the head from the pump Do not allow the idler to fall from the idler pin Tilt the top of the pump head back when removing to prevent this Avoid damaging the...

Page 8: ...om the pump and pull it straight off FIGURE 12 Motor or Bearing Carrier and Bracket FIGURE 11 Inner Magnet and locknut assembly Motor or Bearing Carrier Bracket Capscrews 3 Remove the two 6mm buttonhead machine screws and the set collar Insert a brass bar through a port between two rotor teeth and remove the locknut See Figure 11 Slide the inner magnet off the shaft Do not forget this is a very st...

Page 9: ...reased externally using the grease fitting If further disassembly is required reference Figure 8 on page 7 and Figure 14 then proceed as follows 1 Remove the two setscrews from the bolt on hub and slide the outer magnet off of the shaft Remove the outboard drive key in shaft 2 Place the inboard side of the shaft in a vise with padded jaws Bend the lockwasher tab up and gently tap the locknut in a ...

Page 10: ...er O ring needs to be replaced apply a lubricant to the O ring and place it into the O ring groove If the O ring is PTFE derivative encapsulated follow these special instructions ASSEMBLY Depending on the condition of the bearings either replace or repack existing bearings by cleaning and packing with multi purpose NLGI 2 grease Replace the lip seals if necessary See Figure 14 page 9 for lipseal o...

Page 11: ...r on the idler pin in head Make sure the O ring for the head is installed In the O ring is PTFE follow instructions given in step 1 8 The head can now be assembled onto the pump Tilt the top of the pump 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 The pump head and casing should have been ...

Page 12: ...ackscrew to guide the canister into the bracket Thread the capscrew all the way into the bracket as shown in Figure Sequence 19 Use an overhead hoist to support the pump if possible while guiding the canister into the bracket opening CAUTION Do not place fingers onto the front of pump mounting flange Align the canister into bore of the bracket and gently slide it in When the magnets start to engag...

Page 13: ...ring and install one 0 007 shim onto the head With the idler on the idler pin place the head into the pump casing With the capscrews tight the feeler gage should fit snugly between the idler and the rotor face otherwise shims should be added or reduced in thickness until the proper clearance is attained PROCEDURE B If the pump is in line and ports are not accessible remove the head and shims Put t...

Page 14: ... relief valve and turn end for end Refer to Figure 3 page 3 DANGER Before starting pump be sure all drive equip ment guards are in place Failure to properly mount guards may result in serious injury or death PRESSURE ADJUSTMENT If a new spring is installed or if the pressure setting of the pressure relief valve is to be changed from that which the factory has set the following instructions must be...

Page 15: ...ion line An air leak or air pocket in the suction line Pump is noisy The pump is being starved viscous liquid cannot get to pump fast enough Increase the suction pipe size reduce its length or slow down the pump The pump is cavitating liquid vaporizing in suction line Increase suction pipe size or reduce its length Check alignment The magnetic coupling has decoupled Shut off and restart Pump is no...

Page 16: ... 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 Equipmen...

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