Robertshaw CR-101-A1 Instruction Manual

Robertshaw CR-101-A1 Instruction Manual

Adjustable bias volume booster relay

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INSTRUCTION MANUAL
Adjustable Bias Volume Booster Relay
Note to installer: Before installing, read instructions carefully and record
model number. After installing, give this manual to operating personnel or
see that it is filed for future reference.
Industrial Products Division
1602 Mustang Drive
Maryville, Tennessee 37801
Phone: (865) 981-3100 Fax: (865) 981-3168
FOR
CR-101-A1
1
INSTRUCTION MANUAL NUMBER
P-2167
Rev. A

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Summary of Contents for Robertshaw CR-101-A1

  • Page 1 INSTRUCTION MANUAL Adjustable Bias Volume Booster Relay CR-101-A1 Note to installer: Before installing, read instructions carefully and record model number. After installing, give this manual to operating personnel or see that it is filed for future reference. INSTRUCTION MANUAL NUMBER...
  • Page 2 NOTES:...
  • Page 3: Section I - General Information

    SECTION I - GENERAL INFORMATION A. DESCRIPTION: CONNECTIONS ....1/4" female NPT for input, output and supply, 1/16" NPT for exhaust The Model CR101-A1 Volume Booster Relay is a proportioning unit designed for use in pneumatic control WEIGHT............1.2 lb (0.54 kg) systems where the application requires amplifying the volume of control air or biasing the control air pressure.
  • Page 4: Section Ii - Installation

    SECTION II - INSTALLATION A. GENERAL: weight, it may be supported by the air lines. If more secure mounting is desired, use the mounting bracket furnished as Be sure that all pipes and fittings used are clean, free of chips, shown in Figure 1.
  • Page 5: Section Iv - Adjustments

    equals the input pressure. A decrease in the input pressure will To adjust the bias for an advanced or retarded output, turn the allow the output pressure to force the center assembly upward, adjusting screw clockwise or counterclockwise respectively, opening the exhaust valve until the output pressure is equal to to change the force exerted by the biasing spring.
  • Page 6: Section Vi - Repair

    SECTION VI - REPAIR HEX NUT If the procedure outlined in Section V (MAINTENANCE) fails to restore proper operation, disassemble the relay as SEALING WASHER shown in Figure 4 (except as noted) and follow the instructions COVER below: 1. Inspect air passages for dirt. ADJUSTING SPRING 2.
  • Page 7 REPAIR PARTS ITEM DESCRIPTION PART NUMBER QUANTITY EXHAUST SEAT ASSEMBLY (contains items 1 thru 14) 081033F0001 ADJUSTING SPRING ASSEMBLY 081249A0001 HEX NUT, 1/4-20 027939A0001 WASHER 027947A0001 WASHER 027946A0001 SPACER 029533A0001 INPUT DIAPHRAGM 027932B0001 GASKET 027944A0001 SUPPORT RING 027943A0001 VALVE MID PLATE 027600C0001 WASHER 029360A0001...
  • Page 8 Industrial Products Division U.S.A and Canada Robertshaw Industrial Products Division 1602 Mustang Drive Maryville, Tennessee 37801 Telephone: (865) 981-3100 Fax: (865) 981-3168 http://www.robertshaw.thomasregister.com http://www.robertshawindustrial.com Exports Invensys Appliance Controls 1701 Byrd Avenue P.O. Box 26544 Richmond, Virginia 23261-6544 Telephone: (804) 756-6500 Fax: (804) 756-6561 Q-1345 (4/03) Printed in U.S.A.

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