JPS5773876A - Control system of refrigeration equipment - Google Patents

Control system of refrigeration equipment

Info

Publication number
JPS5773876A
JPS5773876A JP14943180A JP14943180A JPS5773876A JP S5773876 A JPS5773876 A JP S5773876A JP 14943180 A JP14943180 A JP 14943180A JP 14943180 A JP14943180 A JP 14943180A JP S5773876 A JPS5773876 A JP S5773876A
Authority
JP
Japan
Prior art keywords
thermostat
compressor
auxiliary relay
water inlet
inlet temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14943180A
Other languages
Japanese (ja)
Inventor
Akiyoshi Taga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP14943180A priority Critical patent/JPS5773876A/en
Publication of JPS5773876A publication Critical patent/JPS5773876A/en
Pending legal-status Critical Current

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  • Control Of Positive-Displacement Pumps (AREA)

Abstract

PURPOSE: To improve the reliability of the unit by connecting a thermostat in series with a reverse contact of an auxiliary relay, said thermostat being actuated through the detection of the cool water inlet temperature slightly lower than the set value of the compressor thermostat at the multiple number of the stage.
CONSTITUTION: A thermostat 23C3 which actuates through the detection of the cool water inlet temperature slightly lower than the set value of a compressor thermostat 23C2 at the multiple number of stage is connected inseries to an auxiliary relay Y and to a compressor thermostat 23C2 via a reverse contact of an auxiliary relay Z while said compressor thermostat 23C2 is connected inseries via a reverse contact of the auxiliary relay Y to a re-start prevention timer Z2 of the number two compressor thereby preventing the start of the number two compressor when the cool water inlet temperature in the condition 6 in the diagram is higher than that in the condition 7 thus eliminating the short period running of the number two compressor for the improved reliability of the unit.
COPYRIGHT: (C)1982,JPO&Japio
JP14943180A 1980-10-27 1980-10-27 Control system of refrigeration equipment Pending JPS5773876A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14943180A JPS5773876A (en) 1980-10-27 1980-10-27 Control system of refrigeration equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14943180A JPS5773876A (en) 1980-10-27 1980-10-27 Control system of refrigeration equipment

Publications (1)

Publication Number Publication Date
JPS5773876A true JPS5773876A (en) 1982-05-08

Family

ID=15474954

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14943180A Pending JPS5773876A (en) 1980-10-27 1980-10-27 Control system of refrigeration equipment

Country Status (1)

Country Link
JP (1) JPS5773876A (en)

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