TYPE-3500/3600
Installation, Operation, and Maintenance Instructions
3
DISASSEMBLY
The following procedure describes how to completely disassemble the regulator. When part replacement
or inspection is required, complete only those steps necessary to accomplish the job.
1. Remove the adjusting screw cap.
2. Turn the adjusting screw counterclockwise to remove spring compression.
3. Remove the bottom housing, bottom housing seal, and tension spring.
4. Unscrew the seat block screw from the yoke.
5. Remove the seat housing and seat body.
6. Remove the bonnet screws and separate the bonnet from the body.
7. Remove the upper spring retainer and spring.
8. Unscrew the diaphragm locknut, and remove the diaphragm plate, the diaphragm, the
diaphragm gasket, and the diaphragm washer.
9. Remove the yoke from the body.
10. Unscrew the supply nozzle. Examine seating edge of supply nozzle. Replace with a new part if
worn or nicked.
ASSEMBLY
The procedure assumes that the regulator was completely disassembled. It not, start these instructions
at the appropriate step.
1. Screw the supply nozzle into the regulator.
2. Insert the yoke into the regulator. The seat block has four valve discs, one on each side. Inspect
the valve discs and select the one to be used. Insert the seat block and seat housing into the
regulator and fasten to the yoke with the seat block screw.
3. Place the bottom housing seal in the seal pocket of the regulator body. Place the tension spring
in the bottom housing, and thread it into the regulator.
4. Put the diaphragm gasket on the regulator body.
5. Place the diaphragm washer, the diaphragm, and the diaphragm plate on the yoke. Make sure
the diaphragm convolutions are toward the spring and secure the parts by threading the
diaphragm locknut onto the yoke.
6. Place the spring and upper spring retainer on the diaphragm plate.
7. Position the bonnet over the spring and on the regulator body. Orient the bonnet vent or vents
as necessary. Insert the cap screws and tighten them only finger-tight.
8. Thread the adjusting screw into the bonnet just far enough to slightly compress the spring.
Securely tighten the cap screws and refer to the “Startup” section for adjustment procedures.
LIMITED WARRANTY & DISCLAIMER
ControlAir, Inc. products are warranted to be free from defects in materials and workmanship for a
period of 18 months from the date of manufacture, provided said products are used according to
ControlAir, Inc. recommended usages. ControlAir, Inc.’s liability is limited to repair of, refund of purchase
price paid for, or replacement in kind of, at ControlAir, Inc.’s sole option, any products proved defective.
ControlAir, Inc. reserves the right to discontinue manufacture of any products or change product
materials, design or specifications without notice.
