Viking Pump TSM635.1: H-HL Universal Mag Drive - Manual (Page 9)

DISCHARGE PoRT
SUCTIoN PoRT
SECTION TSM 635.1 ISSUE E PAGE 9 OF 12
16. Inspect the canister to make sure it has not picked up
any foreign particles, which could damage the pump.
Support the pump with a overhead hoist, if possible, while
guiding the canister into the bracket opening. Back the
capscrew off, being careful that the end of the capscrew
is positioned in the counterbore hole of the adaptor plate.
Secure the pump to the bracket with four capscrews.
Make certain that the power supply to the pump is
“Locked-out”. Check that the pump rotates freely by
spinning the motor fan blades or pump shaft.
FIGURE 13
PUMP ASSEMBLY SEQUENCE
CAPSCREW
Do NoT PLACE
FINGERS HERE
ALL-THREAD RoD
Do NoT PLACE
FINGERS HERE
PUMP RoTATIoN
The pump is designed to operate in either direction. Process
fluid is generally fed to the inner thrust washer and bushing
interface and then through a groove in the bushing to the
outer thrust washer. Then the fluid is pulled into the canister
bushing and back through the hollow shaft and idler pin to the
suction side of the pump. When the pump is operated in the
opposite direction, the fluid flow is reversed, see Figure 14.
FIGURE 14
CIRCULATIoN oF LIQUID THRoUGH
UNIVERSAL MAG DRIVE PUMP
This figure is for illustrative purposes only.
Actual pump construction and location of ports varies.
ADJUSTING END CLEARANCE
Standard end clearance of 0.004” is used on sizes H-HL.
End Clearances are adequate for viscosities up to 2500
SSU / 540 cSt (SAE 40 lube oil at room temperature).
Higher viscosities require additional clearances. As a
general rule, the end clearance is doubled for higher
viscosities. For specific recommendations on end clearance
for high viscosity or for operating temperatures above
225°F (107°C), check with your Viking representative or
consult the factory. Use either of the following procedures
to properly adjust the end clearance when replacing
shims or reassembling the pump.
PRoCEDURE A
After the rotor has been installed and the locknut has been
positioned and retained, insert a feeler gage of the proper
end clearance into the port and between two rotor teeth, see
Figure 15. With the idler on the idler pin, place the head
into the pump casing. With the capscrews tight, the feeler
gage should fit snugly; otherwise shims should be added or
reduced in thickness until the proper clearance is attained.
FIGURE 15 PRoCEDURE A