Jackson JFT-S technical manual Service Procedures, After Maintenance Actions, Special Parts

SECTION 5: SERVICE PROCEDURES

VACUUM BREAKER REPAIR PARTS KIT (CONTINUED)

Removing the plunger

6.Your repair kit comes with a new plunger. Examine the old one and ensure that the mating surface is not damaged or cut. Also inspect the rubber seal on the top of the plunger to ensure it is in good condition and not torn.

7.If any of these conditions are present, replace the old plunger with the new one from your kit. Verify that the new plunger is also free from defects. If it is not, contact your Ecolab representative immediately.

8.The plunger should drop into the vacuum breaker and seat. Ensure it is not flipped upside down (the orange seal ring should be up towards the top of the vacuum breaker).

9.Pick up the cap and examine it. With a soft towel, remove any grit, grime or debris that may have gotten caught in the threads of both the cap retainer or the vacuum breaker body. There is an O-ring that should be present on the cap retainer as well. Regardless of the condition of the plunger, this O-ring should be replaced once the cap is removed. Using a small flathead screwdriver, remove the old O-ring.

Replacing the O-ring

10.With the new O-ring in place, screw the cap back on the vacuum breaker body. The cap needs to only be hand tight (snug).

Examining the seal ring on the plunger

AFTER MAINTENANCE ACTIONS

1. Reconnect the incoming water (if disconnected) and turn on. Then restore power to the unit. Run the unit for at least 10 minutes to ensure there are no leaks. If any prob- lems arise please contact your Ecolab representative.

SPECIAL PARTS

Vacuum breaker repair kit:

For 1/2” NPT order 06401-003-06-23

For 3/4” NPT order 06401-003-06-24

Complete Vacuum Breaker Assembly

For 1/2” NPT order 04820-003-06-13

For 3/4” NPT order 04820-002-53-77

Examining the plunger seating surface

JFT Series Technical Manual 7610-002-77-38

Issued: 03-16-2006 Revised: N/A

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