Dental Delivery Unit Operation Manual
REV-A Page 10 of 43
2.2.9 Foot Switch
Turn on the foot switch when the air source condition is 4.1f, the air pressure should
stable and follow the requirements of the working pressure for any handpiece.
2.2.10 Doctor Stool
Doctor stool should move freely when the load is more than 1350N;
Doctor stool could support more than 180N;
The range of height adjustment should more than 130mm;
The doctor stool should drop less than 10mm after loading 135kg(after initial settlement);
The cover materials and filler materials of doctor stool should follow the requirements of
4.2.1.5.
2.2.11 Air supply switch for water bottle should be with well performance;
2.2.12 The air and water system should be with well performance, and all values
should be operated easily;
2.2.13 The dental unit should be with well sealing, no leakage;
2.2.14 The working noise should be less than 70dB (except the air compressor);
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2.2.15 The pressure system should be safe and reliable, without leakage and
explosion when in the normal condition;
2.2.16 The parts which may generate pressure in the fire accident, should be
equipped with pressure release devises;
2.2.17 Additional load in the emergency measure
The dental unit should be afforded additional 40kg in 1min, which should be interval 1sec;
keep the dental unit stay when in the testing, no damage obviously after testing.
2.2.18 The speed of high speed handpiece should be more than 260
×
×
×
×
103r/min with
medical devise registration certificate;
2.2.19 The speed of motor handpiece should be more than 22
×
×
×
×
103r/min, the torque
should be more than2.65N
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·
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m, with medical devise registration certificate;
2.2.20 The curing light should be with medical devise registration certificate;
2.2.21 The flow on the handpiece should be adjusted with 28L/min
40L/min;
2.2.22 The dental unit should follow the requirements of 5.1 YY/T1043-2004;
2.2.23 The dental unit should follow the requirements of 5.3.1 YY/T1043-2004;
