-36-
(4) When drying, never raise the rotor temperature beyond 120°C.
After dry, apply stop cock grease on the entire surface.
Maintenance of core, O-rings and seal packings
After disassembly, immerse them in warm diluted solution of neutral detergent at pH7
(excluding one containing chlorine) and eliminate soilings, by rubbing with a soft brush as
required.
Then immerse them in warm water of 40°C to 50°C to eliminate sticking materials, rinse them
with distilled water, dry and store them.
Maintenance of seals
After use, wash them with warm water, dry and store them.
Take care not to scratch the contact surface of the seal.
Checkup of rotor
Check the rotor for corrosion every 100 hr of operation. Check particularly carefully the round
portion of the rotor, tapered opening at the rotor bottom (marked in Fig. 17), etc because the
mechanical resistance is considerably lost when they are corroded. Corrosion can be recognized
by discoloration, dent, crack or others on the surface. If corrosion is found, stop using the rotor
thereafter and contact the nearest agent for check.
Fig. 17
