Archer VR3 Installation, Betrieb und Wartung - Seite 3

Blättern Sie online oder laden Sie pdf Installation, Betrieb und Wartung für Controller Archer VR3 herunter. Archer VR3 7 Seiten. Vacuum regulator

Operating the Model VR3:

1) Prior to placing the VR3 vacuum regulator into operation, it is important to carefully test

the lead gasket seal. A small squeeze bottle (provided with every Archer Instruments

vacuum regulator) should be partially filled with ammonia. Squeezing the bottle allows the

ammonia fumes to be used to test for chlorine leaks. A leak is detected by a visible light

gray / white gas cloud when the two fumes interact. To test for leaks, open the cylinder

valve ¼ turn and then close immediately. This pressurizes the lead gasket seal but ensures

the full cylinder of chlorine is isolated during leak testing. Use ammonia fumes around the

cylinder valve and lead gasket to check for any signs of leaking gas. If a leak is found, this

must be addressed before placing the unit into operation.

2) After confirming no leaks exist, open the chlorine cylinder valve 1/3 of a turn. This is fully

open and there is no need to open the valve further.

3) If the Model VR3 is not equipped with a rate valve (if this is plugged), no further action is

needed.

4) If the VR3 is equipped with a rate valve, adjust the rate valve knob until the desired feed

rate is indicated on the graduated meter tube.

Maintaining the VR3:

Recommended Maintenance Frequency: Archer Instruments recommends yearly routine

maintenance of the VR3 vacuum regulator.

-Refer to the following parts diagram when performing maintenance on the VR3.

1) To disassemble the VR3, remove the two BTA-125 yoke screws and pull the yoke &

inlet assembly out of the back of the vacuum regulator.

2) Remove the BTA-124 body screws and separate the VR3 front and back bodies.

3) The diaphragm assembly can then be removed by pulling it straight out of the front

body. Take care to not lose the vent spring, which is located between the diaphragm

assembly and the front body.

4) 250 PPD Units & Lower:

a. Unscrew the RVA-518-XXX rate valve & knob (or the dummy plug if the unit is

plugged) from the VBA-100C valve bonnet until it can be gently pulled straight

up and out.

b. Remove the VBA-100C rate valve bonnet (if unit is not plugged) by unscrewing

it from the top meter block using a pair of pliers. Beneath the bonnet (or

dummy plug) is an OA-VIT-106 o-ring, which should be removed and replaced.

c. Next remove the glass meter tube by slowly unscrewing the MIA-140 inlet plug.

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

fall out.

Archer Instruments, LLC www.archerinstruments.com