Elmo Rietschle S-VSA - Manual (Page 19)

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5.4.2 Re-assembly procedure
(1) Insert plate guide (A) 8 & (B) 9 on front end plate 2 and secure with socket bolt (M8).
(2) Insert plate guide (B) 9 on rear end plate 3 and secure with socket bolt. (M8).
(3) Insert drive shaft (A) 6 & driven shaft (B) 7 on front & rear end plate.
(4) The reassembly should be done from gear side (=discharge side) first. Insert mechanical seals on drive & driven shaft.
(5) Inset spacer (A) 36 on drive & driven shaft.
(6) Insert bearing holder (A) 10 & (B) 11 on front end plate.
(7) Push insert ball bearing 23 on bearing holder (A) & (B).
(8) Secure ball bearing on drive & driven shaft with lock washer 17´& lock nut 16 and bend one edge of lock washer to fix it.
(9) Put bearing stopper (A) 13 & (B) 14 on bearing holder (A) & (B) and secure them together to front end plate with socket
bolt (M10).
(10) Separate rear end plate from drive & driven shaft to assemble casing 1.
(11) Apply sealant on mating faces of casing and front end plate. Insert O-ring on cooling water line of front end plate. Insert
shaft to casing and fix front end plate of casing with bolt.
(12) Apply sealant on mating face of casting and rear end plate. Insert O-ring on cooling water line of casing. Secure rear end
plate and casing with bolt (M10).
(13) Install spacer (B) 38 on drive & driven shaft.
(14) Insert lip seals (2ea for each bearing holder) inside the bearing
holder (C) 12.
(15) Insert bearing holder (C) 12 on rear end plate.
(16) Install slip sleeve 20 on drive & driven shaft for the lip seals to sit
on slip sleeve.
(17) Push insert roller bearing 22 on bearing holder (C). Secure bear-
ing holder (C) 12 with socket bolt (M8).
(18) Fix expansion side roller bearing on drive & driven shaft with push
sleeve 37, lock washer 17 and lock nut 16. Now, go to front end
cover side.
(19) Insert timing gear (A) on drive shaft and timing gear (B) on driven shaft. Install power lock 15 on timing fear (B) and secure
it with wrench. Set clearance to be 0.1 mm with thickness gauge through suction port as shown above. Tighten fix timing
gear (A) with power lock.
(20) Put O-ring on Groove of cooling water line of front end cover 4 and insert oil paper packing 58 between front end plate 3
and front end cover 4. Secure them with bolt temporary.
(21) Insert ball bearing 24 on drive shaft (A). Tightly secure front end cover to front end plate.
(22) Insert O-ring on seal adapter housing 25 and fix them to front end cover with socket bolt.
(23) Insert speedy sleeve 20 & oil seal on seal adapter housing 25.
(24) Fill lubrication oil through oil inlet on the top of front end plate. The oil level should be on the top of red mark in oil level
gauge. (Oil amount for each model is listed on specification 1.3)
(25) Assemble blind plates & covers on casing & plate side.
(26) Install all accessories. Now, go to rear end plate side.
(27) Tightly secure lock nut 16 and bend one edge of lock washer 17 to fix expansion side roller bearings.
(28) Apply vacuum grease (approx.
1 /
2
of the space) into the space of bearing holder (C).
(29) Apply sealant between grease cover 5 and rear end plate 3. Secure them with bolt. Now, the assembly is completed.
For reference, clearance table for assembling of the units are listed as follows:
Feeler gauge
Screw clearance table in mm
A B C D E
VSA 150 0.13 - 0.17 0.18 - 0.25 0.15 - 0.2 0.1 - 0.12 0.08 - 0.1
VSA 330 0.2 - 0.25 0.2 - 0.3 0.2 - 0.25 0.1 - 0.15 0.1 - 0.12
VSA 400 0.25 - 0.3 0.25 - 0.4 0.25 - 0.27 0.12 - 0.15 0.11 - 0.13
VSA 800 0.28 - 0.33 0.35 - 0.5 0.3 - 0.35 0.15 - 0.18 0.11 - 0.13
Discharge (fixed) side Suction (expansion) side