Inspection Of Disassembled Parts; Reassembling The Pump - BeaconMedaes Lifeline Camel Installation, Operation And Maintenance Manual

"Camel" Liquid Ring Medical Vacuum
s. If the shaft sleeve (114) is damaged or worn and requires replacement, use propane torch and 350°F
(177°C) temp stick, and heat shaft sleeve to 300° to 350°F (149° to 177°C) to loosen Loctite 262 that
bonds shaft sleeve to motor shaft. Then pry shaft sleeve off the motor shaft.
t. On all iron pumps if a lobe stud (106-2) is broken or damaged and requires replacement, unscrew broken
or damaged lobe and stud and remove from lobe (106). On all iron pumps MHF 80 and MHF 120
vacuum pumps, if either of two lower lobe studs (106-2) require replacement, heat stud area to 300° to
350°F (149° to 177°C) with propane torch to loosen Loctite 262 and then remove lobe stud. On stainless
steel pumps, heat stud area in same manner to remove any lobe stud that requires replacement.
B.6.3

Inspection of Disassembled Parts

With the vacuum pump, disassembled, inspect parts for wear from corrosion or erosion. Clean all foreign material
from the inside face of the head (103, Figure 9-1), the rotor (110) and the internal surfaces of the lobe (106). If any
of the parts are worn or damaged, contact your BeaconMedæs representative to determine if the parts must be
replaced.
B.6.4

Reassembling the Pump

On stainless steel pumps, use Loctite anti-seize or equivalent on all threaded fasteners and
use Teflon tape, Loctite PST pipe sealant or equivalent on pipe threads to avoid galling and
Following the inspection of the pump parts, reassemble the pump as follows:
a. On all iron type MHF pumps, if the shaft sleeve (114, Figure 9-1) was removed, install a new shaft
sleeve on the motor shaft (401).
b. If lobe studs (106-2) were removed, install new lobe studs in lobe (106). On all iron size MHF vacuum
pumps, if lobe studs are to be installed in two lower through lappings in lobe, clean tapping and new
lobe stud threads with Oakite Safety Solvent and let solvent dry. Then apply Loctite 262 to lobe tapping
and lobe stud threads and install lobe studs. On stainless steel pumps, clean lappings and any new lobe
stud threads and apply Loctite 262 in same manner
c. On stainless steel pumps, install holding pin (2-5), if removed, in lobe with pin protruding no more than
1/16 inch (1.6 mm) into lobe interior.
d. Remove new shaft seal assembly (2) parts from wrapping carefully and keep cardboard shipping disc
between sealing faces. In handling make certain not to drop rotating seal (2-1) or stationary seal (2-2)
and take particular care not to chip or scratch sealing faces.
e. Apply small amount of light oil (not grease) to O-ring on stationary seal (2-2) and bore of lobe (106).
Note
On stainless steel pumps, make sure that slot in stationary seal (2-2) is aligned with holding pin (2-5) when
performing step f.
f. Install stationary seal, shiny face up, in lobe bore.
g. Place cardboard shipping disc on stationary seal to protect sealing face and press stationary seal into lobe
with a piece of wood with smooth flat end. Trim end of piece of wood to 2-1/4 inch (57 mm) maximum
diameter. Use care, push squarely and firmly until stationary seal (2-2) bottoms in lobe bore. Remove
cardboard shipping disc and clean and oil sealing face of stationary seal using clear light oil (not
grease).
CAUTION
pick-up.
B-11
Medical Systems