Archer VR3 Instalacja, obsługa i konserwacja - Strona 4

Przeglądaj online lub pobierz pdf Instalacja, obsługa i konserwacja dla Kontroler Archer VR3. Archer VR3 7 stron. Vacuum regulator

d. The MIA-140 inlet plug can then be removed fully by unscrewing it several turns

and then pulling it out.

e. The RVA-830-100 / 250 rate valve seat may or may not need to be replaced. If

the rate valve stem fits loosely into the seat, replace the seat. If it feels snug

the seat can be left in place. If the rate valve seat does need to be replaced, it

can be pushed down and out of the top meter block from above using a small

screwdriver or other small tool. Using a flathead screwdriver, remove the top

and bottom meter blocks from the front body.

5) 500 PPD Units:

a. Remove the VRA-122 Meter Body by unscrewing the (4) #10-24 screws.

b. Unscrew the RVA-652 / 651 Rate Valve and remove.

c. Using a pair of pliers, unscrew and remove the RVA-224 bonnet & RVA-116

sleeve from the meter body

d. Next remove the glass meter tube by slowly unscrewing the MIA-232 inlet plug.

This clamps the glass tube into place. Be careful to not let the glass meter tube

fall out.

e. Using a flathead screwdriver, remove the top and bottom meter blocks from the

front body.

6) The guide pin VRA-100 can be unscrewed from the diaphragm assembly by hand or (if

necessary) by using a pair of pliers. But it is generally not necessary to remove this

pin for routine maintenance. Simply replace the OA-VIT-006 o-ring.

7) The diaphragm back plate VRA-363 and diaphragm front plate are threaded together

and can often be unscrewed by hand. If they will not unscrew by hand, it may be

necessary to use a vice and / or channel locks.

8) Whenever routine maintenance is being performed, all parts should be thoroughly

cleaned. It is recommended that all o-rings (with the exception of the OA-VIT-332) be

replaced.

9) When reassembling, new o-rings should be given a thin film of the Fluorolube grease.

NEXT: The inlet assembly is a critical component of the VR3. Improper handling or

reassembly can result in dangerous leakage of chlorine gas.

Archer Instruments recommends that only trained personnel or those familiar with

vacuum regulator maintenance service the inlet assembly.

To service the inlet assembly:

a. Remove the inlet assembly from the yoke plate by sliding the VRA-142 retainer

clip off of the inlet capsule.

b. Remove the inlet filter from the inlet capsule. The inlet filter cartridge (FCA-1 &

FCA-2) can be removed using any ¼-20 threaded bolt or screw. The VR3 body

screws and yoke screws are ¼-20 thread. Unscrew the FCA-2 from the FCA-1

and replace the filter.

Archer Instruments, LLC www.archerinstruments.com