Versa-Matic 3 Clamped Metallic Hazardous Service Ball Valve (RE3) - Manual (Page 24)

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21
• Model RE3 Metallic Clamped
AirVantage Servicing - Control Module
To service the control module, first shut off and bleed the air
being supplied to the pump. For safety purposes the air supply
line should be disconnected from the pump. Then shut off the
suction and discharge lines to the pump. Bleed the pressure
from the pump suction and discharge lines and remove the
lines from the pump. During the servicing of the AirVantage,
consult the “AirVantage Composite Repair Parts Drawing”.
Step #1: Remove the Patch Cable
Twist the ribbed portion of the patch cable connector
in a counterclockwise direction, until it unthreads from
the connector. The cable can then be removed from the
intermediate.
Step #2: Remove the AirVantage from the Pump
Use a ½” socket and remove the four 5/16-18 x 5 1/2 cap
screws that hold the AirVantage to the pump. Remove the two
chamber bolts/nuts that are holding the right side bracket to be
able to remove the right bracket and AirVantage unit from the
pump. Be sure to support the weight of the AirVantage while
removing the last cap screw. After the AirVantage is removed
from the pump, set the unit down on the cover located on the
bottom. Inspect the o-ring between the poppet valve and the
adapter plate for damage.
Step #3: Access the Pilot Valve
Use a 5mm hex-key wrench and loosen the four M6 x 35mm
socket head cap screws securing the top cover on. Lift the
cover off, exposing the pilot valve. There is a molded o-ring
seal located on the underside of the cap. Make sure the o-ring
stays located within the groove. The connector will need to
be removed from the pilot valve. Once the plug has been
removed, feed the wire assembly into the hole in the valve
body to the point where the connector just enters the valve
body. Reinstall the top cover and loosely reinstall the bolts. The
connector will eventually need to be reconnected.
Step #4: Access the Control Module
Use a 5mm hex-key wrench and loosen the four M6 x 35mm
socket head cap screws securing the bottom cover on. Lift
the bottom cover off, exposing the power generation module.
There is a molded o-ring seal located on the underside of the
cap. Make sure the o-ring stays located within the groove.
Unplug the connector that connects the power generator to the
control board. Use a 4mm hex-key wrench to loosen the four
M5 x 25mm socket head cap screws. The power generation
module should now be loose. Carefully lift the power
generation module off the rest of the assembly, making sure
that the control board wire and connector slips through the hole
in the power generation case.
"AirVantage Caution" - Take caution not to lose the o-ring
seals between the components.
If the control module needs to be replaced, use an 4mm hex-
key wrench and loosen the two M5 x 25mm socket head cap
screws holding the control module to the poppet assembly. The
control module should now be loose. Carefully lift the control
module off the poppet assembly, making sure that the pilot
valve connector wire slips through the hole in the poppet valve
assembly.
"AirVantage Caution" - Take caution not to loosen the
o-ring that seals between the components.
Step #5: Reinstalling
When reinstalling the new control module, make sure to feed
the pilot valve connector wire through the hole in the poppet
valve assembly. Install the two M5 x 25mm socket head cap
screws and tighten to 3.4 N-M.
Reinstall the power generation module. Make sure to feed the
control module wire through the hole in the power generation
case. Install the four M5 x 25mm socket head cap screws and
tighten to 6.8 N-M.
“AirVantage Caution” – Be sure to reattach the connector
from the power generator to the control board.
Reinstall the top cover, making sure the o-ring seal is still in the
groove. Tighten the four M6 screws. Reinstall the AirVantage
right bracket, chamber bolts/nuts and four 5/16-18 x 5 1/2 cap
screws, torque to 90 in-lbs.
“AirVantage Caution” – Be sure to reattach the patch cable
connector that connects the AirVantage module to the
intermediate.
Note: Refer to AirVantage
Composite Repair Parts List
on page 23 for part numbers
VALVE, POPPET
CONTROL MODULE
POWER GENERATION MODULE
CAPSCREW, HEX SOC HD
M6 X 1.0 X 35
COVER
SEAL, O-RING
SEAL, O-RING
SEAL, O-RING
O-RING
O-RING
CAPSCREW, HEX SOC HD
M6 X 1.0 X 25
CAPSCREW, HEX SOC HD
M6 X 1.0 X 25
CONNECTOR (Power
Generation Module to
Control Module)
CONNECTOR
(Control Module to Power
Generation Module)
CONNECTOR
(To Intermediate)
WASHER, FLAT, M6
Note: Ensure all mating faces are free from scores or damage prior to re-
assembly. Check each metallic face joint with a 0.003" feeler gage to ensure all
flange faces are fully closed after assembly. Failure to do so may compromise
the flameproof design of the assembly.
Do not open when an
explosive atmosphere
may be present.
WARNING
S u b s t i t u t i o n o f
components may
impair intrinsic safety.
WARNING