Daikin SkyAir RZF-A Series, Руководство по обслуживанию

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Outdoor Unit Control SiME281906E
61 Part 4 Functions and Control
4.12 High Pressure Protection Control
In order to prevent abnormal high pressures in the system and hence avoiding activation of the
high pressure safety device the below control function will be activated.
Flowchart
As the bearing resistance limit pressure decreases during slow operation of the compressor, the
lower limit of frequency is restricted.
In cooling
Parameters
Normal operation
Hp > B MPa
Compressor operation
frequency –1 step/10 seconds
Compressor operation
fre1 step/1 minute
Compressor operation
frequency A Hz
Compressor operation
fre1 step/5 minutes
Hp > C p H a P M
≤
G MPa
OR
Hp < E MPa
Compressor stop
Abnormal stop ( E3 indication)
15 times or less
stopping in 300 minutes
Hp
≤
F MPa
• Stopped 16 times in 300 minutes
• High pressure switch is activated.
• Hp >
D MPa for 1 minute
Hp
≥
2.55 MPa
Normal operation
Hp < 2.36 MPa
After 30 seconds
Compressor
frequency lower limit
H Hz
RZF18/24AVMK RZF30/36AVMK
A (Hz) 88.5 88.5
B (MPa) 3.67 3.67
C (MPa) 3.77 3.77
D (MPa) 4.02 4.02
E (MPa) 3.62 3.62
F (MPa) 3.39 3.39
G (MPa) 3.52 3.52
H (Hz) 63 64.5