Dover Blackmer TLGLF3C Kurulum, Çalıştırma ve Bakım Talimatları - Sayfa 9
Su Pompası Dover Blackmer TLGLF3C için çevrimiçi göz atın veya pdf Kurulum, Çalıştırma ve Bakım Talimatları indirin. Dover Blackmer TLGLF3C 12 sayfaları. Liquefied gas pumps
Sayfayı Yazdır
12. Turn the pump casing around and remove the outboard
head previously attached.
13. Install the outboard head (20), mechanical seal (153) and
bearing (24) as instructed in steps 6 through 11.
14. Rotate the shaft by hand to engage the mechanical seal
drive tangs, and to test for binding or tight spots. If the
rotor does not turn freely, lightly tap the rims of the heads
with a soft faced mallet until the correct position is found.
Install all of the remaining head capscrews (21) for each
head (20) and uniformly torque to 30 lbs ft (40.7 Nm).
15. LOCKNUT ADJUSTMENT
It is important that the bearing locknuts (24A) and lockwashers
(24B) be installed and adjusted properly. Overtightening
locknuts can cause bearing failure or a broken lockwasher
tang. Loose locknuts will allow the rotor to shift against the
discs (71), causing wear. See Figure 7.
Figure 7 - Locknut Adjustment
a. On both ends of the pump shaft, Install a lockwasher
(24B) with the tangs facing outward, followed by a
locknut (24A) with the tapered end inward. Ensure the
inner tang "A" of the lockwasher is located in the slot in
the shaft threads, bending it slightly, if necessary.
b. Tighten both locknuts (24A) to ensure that the bearings
(24) are bottomed in the head recess. DO NOT
overtighten and bend or shear the lockwasher inner
tang.
c. Loosen both locknuts one complete turn.
d. Tighten one locknut until a slight rotor drag is felt when
turning the shaft by hand.
e. Back off the nut the width of one lockwasher tang "B".
Secure the nut by bending the closest aligned
lockwasher tang into the slot in the locknut. The pump
should turn freely when rotated by hand.
f.
Tighten the opposite locknut (24A) by hand until it is
snug against the bearing (24). Then, using a spanner
wrench, tighten the nut the width of one lockwasher tang.
Tighten just past the desired tang, then back off the nut
to align the tang with the locknut slot. Secure the nut by
bending the aligned lockwasher tang into the slot in the
locknut. The pump should continue to turn freely when
rotated by hand.
g.
To check adjustment, grasp the nut and washer with
fingers and rotate back and forth. If this cannot be done,
one or both locknuts are too tight and should be
alternately loosened one stop at a time (.001" – 25
microns). Begin by loosening the locknut adjusted last.
MAINTENANCE
16. Inspect the grease seal (104) for wear or damage and
replace as required. Grease the outside diameter of the
grease seal and push it into the inboard bearing cover
(27) with the lip of the seal inward.
17. Attach a new bearing cover gasket (26) and the bearing
cover (27) to the inboard head (20). Make sure the grease
fittings (76) are accessible. Install and torque the bearing
cover capscrews (28) to 30 lbs ft (40.7 Nm).
18. Install the grease seal (104) and bearing cover (27) on the
opposite side of the pump as instructed in steps 16 and
17.
19. Push the dirt shield (123A) over the inboard and outboard
shafts and firmly against the bearing cover (27).
20. Attach the shaft protector (186) to the non-driven shaft
end of double ended pumps.
Do not operate
without guard
in place
21. Refer to "Pre-Start Up Check List" and "Start Up
Procedures" sections of this manual prior to restarting
pump operation.
501-D00
Page 9/12
Operation without guards in place can
cause serious personal injury, major
property damage, or death.