Johnson Controls York 366-70487 Скачать руководство пользователя страница 1

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LD12524a

FOR OT/HT MODEL CHILLERS STYLE “B” AND ”C”

CONTROL CENTERS 366-70488, 366-70487 AND 366-73582

LOW PRESSURE CUTOUT CONTROL

P/N 025-45742-000

INSTALLATION AND MAINTENANCE

Supersedes: 160.43-NM4 (1206)

Form 160.43-NM4 (1112)

035-21593-000

Issue Date:

November 12, 2012

Содержание York 366-70487

Страница 1: ...RS STYLE B AND C CONTROL CENTERS 366 70488 366 70487 AND 366 73582 LOW PRESSURE CUTOUT CONTROL P N 025 45742 000 INSTALLATION AND MAINTENANCE Supersedes 160 43 NM4 1206 Form 160 43 NM4 1112 035 21593...

Страница 2: ...als This individual shall also be familiar with and comply with all applicable governmental standards and regulations pertaining to the task in question SAFETY SYMBOLS The following symbols are used i...

Страница 3: ...icy for con tinuous product improvement the information con tained in this document is subject to change without notice Johnson Controls makes no commitment to update or provide current information au...

Страница 4: ...JOHNSON CONTROLS 4 FORM 160 43 NM4 ISSUE DATE 11 12 2012 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 5: ...ting 025 45742 LPCO Control 9 Pressure Connection Piping 10 Wiring 11 SECTION 3 TESTING AND ADJUSTMENTS 13 Tools Needed 13 Secure Chiller From Operation 13 Connect LPCO Pressure Connection To A Calibr...

Страница 6: ...JOHNSON CONTROLS 6 FORM 160 43 NM4 ISSUE DATE 11 12 2012 THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 7: ...tments LPCO controls 025 45742 are vacuum switches which are negative gauge pressure controls that operate at a predetermined constant pressure below atmospheric This means that the absolute pressure...

Страница 8: ...At atmospheric pressure the switch contacts are made between the Common and Normally Open terminals and open between the Common and Normally Closed terminals As the pressure falls below the control C...

Страница 9: ...rated in a vertical position with the switch up and pressure con nection down The controls are surface mounted using two mounting ears with holes for 10 screws on either side of the control bracket pl...

Страница 10: ...o pressure connection tight enough to ensure a leak free seal 2 Installing kit supplied Capillary Tube 48 in YORK p n 026 45010 000 a Ensure 1 4 in flare mating surfaces are clean and free of debris o...

Страница 11: ...itch bracket Refer to Figure 3 The three switch terminals are clearly labeled COM MON NORMALLY OPEN and NORMALLY CLOSED Refer to Figures 3 and 4 1 Remove enclosure cover first by removing the one capt...

Страница 12: ...res 1 3 and 4 and ECC Wiring Diagram 8 Use kit supplied wire tie wraps YORK p n 025 09607 000 to bundle and or secure LPCO control wires numbered 47 48 and 49 as needed 9 Reinstall enclosure cover sec...

Страница 13: ...flare half union fitting at the LPCO control pressure con nection 2 Using clean 1 4 in refrigerant hoses connect a controllable vacuum source in series to a digital vacuum gauge and to the 1 4 in ext...

Страница 14: ...7 Repeat steps 4 5 and 6 until the noted CUT OUT setpoint is within the allowable range 8 Once the CUTOUT set point is verified or cali brated then proceed to the switch DEADBAND calibration procedur...

Страница 15: ...k free seal 4 Disconnect the Ohm meter from the switch Com mon and Normally Open terminals 5 Connect the wire numbered 47 to the 025 45742 LPCO control switch terminal labeled as COM MON Refer to Figu...

Страница 16: ...JOHNSON CONTROLS 16 FORM 160 43 NM4 ISSUE DATE 11 12 2012 Section 3 Testing and Adjustments THIS PAGE INTENTIONALLY LEFT BLANK...

Страница 17: ...plated brass Wetted Materials Brass bellows and zinc plated steel spring Weight Approx 1 lb Approvals UNITED STATES AND CANADA UL Listed cUL Certified Pressure UL 508 CSA C22 2 No 14 Files E42272 EUR...

Страница 18: ...USA 17405 1592 800 861 1001 Subject to change without notice Printed in USA Copyright by Johnson Controls 2012 www johnsoncontrols com ALL RIGHTS RESERVED Form 160 43 NM4 1112 Issue Date November 12 2...