Tuthill M-D Pneumatics 7021 - Model 3200 C Disassembly and Reassembly; 3200 C Disassembly Procedures

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7.5 LONG TERM STORAGE
Any time the booster will be stored for an extended period of time, you should take make sure that it is
protected from corrosion by following these steps:
1. Spray the interior (lobes, housing and end plates) with rust preventative. This should be repeated as
conditions dictate and at least on a yearly basis.
2. Fill both end covers completely full of oil.
3. Firmly attach a very prominent tag stating that the end covers are full of oil and must be drained and
relled to proper levels prior to startup.
4. Apply a rust preventative grease to the drive shaft.
5. Spray all exposed surfaces, including the inlet and discharge anges, with rust preventative.
6. Seal inlet, discharge and vent openings. It is not recommended that the unit be set in place, piped to
the system, and allowed to remain idle for a prolonged amount of time. If any component is left open
to the atmosphere, the rust preventative will escape and lose its effectiveness.
7. During storage, ensure that the booster does not experience excessive vibration.
8. Attach a desiccant bag to either of the covers to prevent condensation from occurring inside the booster.
Make sure any desiccant bag (or bags) is so attached to the covers that they will be removed before
startup of the booster.
9. Store the booster in an air conditioned and heated building if at all possible. At least insure as dry
conditions as possible.
10. If possible, rotate the drive shaft by hand at least monthly in order to prevent seals from setting in one
position.
8. MODEL 3200C SERIES DISASSEMBLY AND REASSEMBLY
8.1 DISASSEMBLY OF 3200C SERIES BOOSTERS
WARNING
Before performing any repair or replacement, disconnect and lock out
power.
With proper maintenance and lubrication, normal life expectancy for gears, bearings, and seals can be
achieved. However, over a period of time these parts must be replaced to maintain the efciency of your
booster. This section is written in a way that will allow you to completely disassemble your booster. The
inspection of certain repairable or replaceable parts is referred to at the point of disassembly where these
parts are exposed. If at any point of inspection, repair or replacement is deemed necessary, appropriate
instruction will be given to achieve these repairs or replacements is deemed necessary, appropriate
instruction will be given to achieve these repairs or replacements.
1. Disconnect cooling water lines [274 & 181]. Do not disturb cover bushings [120] or it will be necessary
to retest cooling coils for leakage as described in the assembly procedure. Covers should be retested
if water is detected in drain oil. (90/91 series only).
2. Drain oil from both ends of booster and remove inlet and outlet port ttings [38 or 48].
3. Remove spanner lock nut [83], dust washer [82], screws [93], and seal adapter housing [91]. Tap out
seal [76] and discard O-rings [92 & 140]. Remove spacers [77 & 74], adjusting shim [118] and discard
O-ring [75].
4. Remove cap screws [26A & 26B] and both end covers [6 & 7]. Two jack screw holes are provided on
each cover.
5. Remove lockwire [49], socket head screws [66], and drive shaft [45]. Using puller, remove bearing [50].
6. Remove at head Allen screws [29] from end of each rotor shaft. Remove washers [25], spacers [57],
and oil slinger [21]
NOTE
The at head screws have nylok in their threads and may be difcult to
remove. Strike the head a couple of blows with a at face hammer for easy
removal.