"Camel" Liquid Ring Medical Vacuum
Medical Systems
B-10
Note:
If mechanical puller screw has removable tip, remove tip to expose hollow end and
do not
center punch rotor nut
(110-1) in step j.
j. Center punch top of rotor nut and install rotor nut on shaft (302 or 401) finger-tight to protect end of
shaft.
k. Install mechanical puller on lobe (106) with either tip of puller screw seated in center punch in rotor nut
or with hollow end of puller screw against rotor nut and puller arms secured to lobe with two head
screws (103-1) and flat washers.
Note
Shims (4) may fall out as lobe (106) moves away from motor.
Retain shims (4) for re-assembly.
l. On stainless steel pumps, install mechanical puller on rotor (110) with tip of puller screw seated in center
punch in rotor nut or with hollow end of puller screw against rotor nut and internal puller lips under rotor
inner lip.
m. Using box wrench, tighten puller until rotor (110) breaks free of shaft (302 or 401).
Note
If rotor (110) does not break free of shaft (302 or 401), reheat rotor hub area as specified in step f and repeat step 1.
n. On all iron pumps, proceed as follows:
1. Loosen puller screw and remove rotor nut.
Note
If mechanical puller screw tip was removed, replace tip before performing step n.2.
2. Tighten puller until shaft seal assembly (2) is free of shaft journal. Remove puller.
3. Carefully remove lobe (106), rotor (110) and shaft seal assembly (2) as a unit and place drive
end of lobe on a flat surface.
4. Remove rotor (110), rotating seal (2-1) and seal spring (2-3) from lobe (106).
o. On stainless steel pumps, proceed as follows:
1. Remove puller and rotor nut.
2. Remove rotor from shaft.
3. Loosen four setscrews (2-4) in rotating seal (2-1) and remove rotating seal from shaft.
4. Remove four lobe nuts (106-1) securing lobe (106) to pedestal and remove lobe.
p. Using wooden handle of a hammer or other wooden tool, press stationary seal (2-2) out of lobe (106).
Place a rag or other soft material on bench to prevent damage to stationary seal when it falls from lobe.
Note
Perform step q only if rotor key (110-4) is damaged and requires replacement.
q. Using diagonal pliers, pry rotor key (110-4) out of motor shaft (401) or pedestal shaft (302). Removal of
the key may be difficult. This is a normal condition.
Note
Perform step r only if the slinger (3) is damaged and requires replacement or if the motor requires disassembly.
r. Remove slinger (3) from shaft (302 or 401). This completes disassembly of vacuum pump.
