Mitsubishi Electric PURY-100TMU, Руководство по обслуживанию

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CONTROL
[1] Control of Outdoor Unit
(1) Initial processing
• When turning on power source, initial processing of microcomputer is given top priority.
• During initial processing, control processing corresponding to operation signal is suspended. The control process-
ing is resumed after initial processing is completed. (Initial processing : Data processing in microcomputer and
initial setting of each LEV opening, requiring approx. 2 minutes at the maximum.)
(2) Control at staring
• In case unit is started within 2 hours after turning on power source at low ambient temperature (+5˚C (41˚F) or
less), the unit does not start operating for 30 minutes at the maximum.
(3) Bypass, capacity control
• Solenoid valve consists of bypass solenoid valve (SV1, SV2) bypassing between high pressure side and low
pressure sides. The following operation will be provided.
1) Bypass solenoid valves SV1 and SV2 (both “open” when turned on)
• PURY-80·100TMU(-A)
Item
SV1
ON (Open) OFF (Close)
When Pd reaches
2.70MPa (391psi) or
more When Pd is 2.35MPa
(341psi) and after 30
seconds
SV2
ON (Open) OFF (Close)
When starting compressor
After thermost “ON is returned
and after 3 minutes restart
When compressor stops in
cooling or heating mode
After operation stops
During defrosting operations
During oil recovery operations
During 20Hz operations, at
fall in low pressure or low
pressure saturation tempera-
ture. (3minutes or more after
starting)
When high pressure rises
(Pd)
When high pressure rises
(Pd) during 20Hz operations
(3 minutes after starting)
When discharge temperature
rises
(3 minutes after starting)
Turned on for 4 minutes
Turned on for 4 minutes
Always turned on
Always turned on
Turned on for 3 minutes
Always turned on.
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–
Turned on for 4 minutes
Turned on for 4 minutes
Always turned on.
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–
Always turned on.
When Ps is 0.15MPa
(21.3psi) or less When Ps is 0.25MPa
(35.6psi) or more
When Pd reaches 2.5MPa
(377psi) or more When Pd is 2.30MPa
(334psi) and after 30
seconds
Turned on when high
pressure (Pd) exceeds
pressure limit When high pressure (Pd)
is 1.96MPa (284psi) or
less
When temp. exceeds
130˚C (266˚F) and Pb
reaches 1.47MPa (213psi)
or more When discharge temp. is
115˚C (239˚F) or less
Compressor
Bypass
solenoid
valve (SV1)
(4-minute)
(2-minute) (4-minute) (3-minute)
Start Thermo.
OFF Thermo.
ON Defrost-
ing time
(*1)
Stop