Daikin ZH7SLF Инструкция по эксплуатации IV ver онлайн [10/58] 527034

Si50-402 Periodic Inspection

Semi-Hermetic Single Screw Compressor Version IV 9

* When the yellowing is observed on the gate rotor blade, remove gate rotor and check the

damage on outside of the screw rotor.

If the damage on screw rotor is found, conduct one of the following counter measures.

- Repair (deburr, etc.) the damaged part of the screw rotor.

- Replace the screw rotor.

(5) Measuring the slit clearance

The slit clearance is a gap between the gate rotor and casing, and it affects the compressor

performance and reliability to a great extent. Therefore, the slit clearance must be set

properly (60 to 90 µm).

While pressing the periphery of the gate rotor shaft with fingers, insert a thickness gauge into

the slit clearance to measure the gaps on both suction and discharge sides. Be careful not

to insert the thickness gauge too deep. If the thickness gauge is inserted to deep, it can be

caught between the screw rotor and gate rotor and break.

(See Fig. 3-7 and 3-8.)

Fig. 3-5 Inspection of gate rotor chipping Fig. 3-6 Inspection of gate rotor surface

Fig. 3-7 Slit clearance measuring location Fig. 3-8 Measuring slit clearance on suction side