JOHNSON CONTROLS
115
SECTION 5 – TECHNICAL DATA
FORM 150.67-NM2
ISSUE DATE: 01/31/2019
5
SEISMIC ISOLATOR INSTALLATION AND ADJUSTMENT
LD13763
WASHER
("F")
("B")
GROMMET
("G")
("A")
("C")
("F")
("E")
("E")
("E")
1/4 - 3/8 GAP
C
L
C
L
("C")
EQUIPMENT
("A")
7. THE A DJUSTMENT PROCESS CAN ONLY BEGIN AFTER THE EQUIPMENT OR MACHINE IS AT ITS
FULL OPERATING WEIGHT.
8. BACK OFF EACH OF THE (4) LIMIT STOP LOCK NUTS ("F") ON ISOLATORS 1/2".
9. ADJUST EACH ISO L ATOR IN SEQUENCE BY TURN ING SPRING ADJUSTING NUTS ("G") ONE FULL
CLOCKWISE TURN AT A TIME. REPEAT THIS PROCEDURE ON ALL ISOLATORS, ONE AT A TIME.
CHE CK THE LIMIT STOP LO CK NUTS ("F") PERIODICALLY TO ENSURE THAT CLEARANCE
BETWEEN T HE WASHER AND RUBBER GROMMET IS MAINTAINED. STOP ADJUST
MENT OF
ISOLATOR O NLY WHEN THE TOP PLATE ("A ") HAS RISEN JUST ABOVE THE SHIM ("E").
10. REMOVE ALL SPACER SHIMS ("E").
11. FINE ADJUST ISOLATORS TO LEVEL EQUIPMENT.
12. ADJUST ALL LIMIT STOP LOCK NUTS ("F") PER ISOLATOR, MAINTAINING 1/4-TO 3/8-INCH GAP.
THE LIMIT STOP NUTS MUST BE KEPT AT THIS GAP TO ENSURE UNIFORM BOLT LOADING
DURING UPLIFT (A S THE CASE WHEN EQUIPMENT IS DRAINED).
13. INSTALLATION IS COMPLETE.
1. READ INST RUCTIONS IN THEIR ENTIRETY BEFORE BEGINNING INSTALLA
TION.
2.ISOLATORS ARE SHIPPED FULLY ASSEMBLED AND ARE TO BE POSITIONED IN
ACCORDANCE WITH THE SUBMITTAL DRAWINGS OR AS OTHERWISE RECOMMENDED.
3.SE T ISOLATORS ON FLOOR, HOUSEKEEPING PAD, OR SUB-BASE, ENSURING THAT
ALL ISOLATOR CENTERLINES MATCH THE EQUIPMENT MOUNTING HOLES. THE VMC
GROUP RECOMMENDS THAT THE ISOLATOR BASE PLATES ("B") BE INSTALLED ON A
LEVEL SURFACE. SHIM OR GROUT AS REQUIRED, LEVELING ALL ISOLATOR BASE
PLATES TO THE SAME ELEVATION (1/4-INCH MAXIMUM DI
FFERENCE CAN BE
TOLERATED).
4.B OLT OR ANCHOR ALL ISOLATORS TO SUPPORTING STRUCTURE UTILIZING BASE
PLATE THRU HOLES ("C") OR WE L D BASE PLATE TO SUPPORTING STRUCTURE WITH
3/8 F ILLET WELD 2" LONG @ 4" ON CENTER AROUND ENTIRE BASE PLATE OR AS
ENGINEERED FOR SPECIFIC LOAD AND OR FIELD CONDITIONS.
5.ISOLATORS ARE SHIPPED TO THE JOB SITE WIT H (2) REMOVABLE SPACER SHIMS
("E") BET WEEN THE TOP PLATE AND THE HOUSING. THESE SHIMS MUST BE IN PLACE
WHEN THE EQ UIPMENT IS POSITIONED OVER THE I
SOLATORS.
6.WITH ALL SHIMS ("E") IN PLACE, POSITION EQUIP MENT ON TOP OF PLATE ("A") OF
ISOLATOR. BOLT EQUIPMENT SECUREL Y TO TOP PLATE OF ISOLATOR USING A
MINIMUM OF (2) 5/8 UNC A325 GRADE 5 SAE BOLT OR WELD EQUIPMENT OR BRACKET
TO THE TOP PLATE ("A") OF ISOLATOR WITH A MINIMUM 3/8 FILLET WELDS 2" LONG
@ 3" O.C. FOR A MINIMUM TOTAL WELD OF 10". (ALL SIDES OF EQUIPMENT OR
BRACKET RESTIN G ON TOP PLATE ("A") MUST BE WELDED).
Units shipped on or after June 15, 2008
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