H E Y E R P a s i t h e c
70 / 106 HEYER Pasithec, Operator’s manual Rev. 0.2 Draft - 12/09
8.2.1 User Maintenance
Minimum maintaining
Standard
Planned maintaining Standard
Daily Clean the outer surface.
Weekly Perform 21% O
2
sensor calibration.
Ventilate the system, open flowmeter, and make sure that the float moves
up and down smoothly. It can prevent blocking and clinging.
Monthly Perform 100% O
2
sensor calibration.
Test leakage of bellows assembly.
When cleaning and
installing
Check if any components are broken, and replace or repair them if
necessary.
As required Replace O
2
sensor (one year generally).
Open the drain valve and replace absorbent in the absorber.
8.2.2 Useful Life Estimation
CAUTION: The useful life of the following parts should be considered in normal
environment and operating requirements.
Main unit 5 years
Components 5 years
Vaporizer 5 years
Absorb circle 5 years
8.2.3 Replacement of Consumable Parts
Parts are replaced at multiple intervals from the date of installation.
Consumable parts 6 months 12 months 36 months
Check/replace internal battery (3 years) Not needed Check Replace
Check/replace folding bag Not needed Check Replace
Check/replace U-shaped ring (U-ring) Not needed Check Replace
Check/replace O-shaped silicone airtight ring
∅6X1.8 (for micromanometer)
Check Replace Replace
Check/replace O-shaped silicone airtight ring
∅4X1.8 (for micromanometer)
Check Replace Replace
Check/replace O-shaped rubber airtight ring
14×2.65 (on by-pass valve).
Check Replace Replace
Replace O
2
sensor Check Replace Replace
8.3 Maintaining the Breathing System
Parts that are broken, crushed, worn or distorted must be replaced immediately when cleaning the
breathing system.
Refer to the sections corresponding to reassembly and testing.
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