VERDER VA 50 Operation manual

819.4496
Rev. ZAL
EN
INSTRUCTIONS – PARTS LIST
For fluid transfer applications. For professional use only.
8.3 bar Maximum Fluid Working Pressure
8.3 bar Maximum Air Input Pressure
Patent No.
CN ZL941026434.4
FR 9408894
JA 35107270
US 5,368,452
*Applies only to pumps with
conductive polypropylene fluid
sections.
Important Safety Instructions
Read all warnings and instructions in this manual.
Save these instructions.
*
II 2 GD
Ex h IIC 66°C...135°C Gb
Ex h IIIC T135°C Db
04613B
CONDUCTIVE POLYPROPYLENE*, POLYPROPYLENE AND PVDF
VERDERAIR VA 50
Air-Operated
Diaphragm Pumps

2 819.4496
Table of Contents
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Pressure Relief Procedure . . . . . . . . . . . . . . . . 13
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Repairing the Air Valve . . . . . . . . . . . . . . . . . . . 16
Ball Check Valve Repair . . . . . . . . . . . . . . . . . . 18
Diaphragm Repair . . . . . . . . . . . . . . . . . . . . . . . 19
Bearing and Air Gasket Removal . . . . . . . . . . .23
Repair Kit Listing . . . . . . . . . . . . . . . . . . . . . . . . . . 25

819.4496 3
Configuration Number Matrix
Check the identification plate (ID) for the 15–digit Configuration Number of your pump. Use the following matrix to define
the components of yourpump.
Sample Configuration Number: VA50PA – SS TF TF FE 00
NOTE: Some combinations are not possible. Please check with your local supplier or www.verderair.com.
VA50 P A SS TF TF FE 00
Pump Model Fluid Section Air Section Seats Checks Diaphragms Connections Options
Pump Model
(1 and 2) Fluid Section Material (3) Air Section Material (4) Seats (5)
VA50 C Conductive
Polypropylene* AAluminum BN Buna–N
KPVDF SStainlessSteel HY TPE
PPolypropylene KY PVDF
PP Polypropylene
SP Santoprene
SS StainlessSteel
VT FKM
Balls
(6) Diaphragm (7) Connections (8) Options (9)
BN Buna–N BN Buna–N FE End Flange 00 Standard
GE Geolast GE Geolast RE Remote
HY TPE HY TPE
SP Santoprene SP Santoprene
TF PTFE TF PTFE/EPDM
2–Piece
VT FKM TO PTFE/EPDM
Overmolded
VT FKM
*Conductive Polypropylene is certified: II 2 GD ATEX T-code rating is dependent on the temperature of the
fluid being pumped. Fluid temperature is limited by the ma-
terials of the pump interior wetted parts. See Technical
Data for the maximum fluid operating temperature for your
specific pump model.
Ex h IIC 66°C...135°C Gb
Ex h IIIC T135°C Db

4 819.4496
Symbols
Warning Symbol Caution Symbol
Warning
This symbol alerts you to the possibility of serious injury
or death if you do not follow the instructions.
Caution
This symbol alerts you to the possibility of damage to or
destruction of equipment if you do not follow the
instructions.
Warning
INSTRUCTIONS
EQUIPMENT MISUSE HAZARD
Equipment misuse can cause the equipment to rupture or malfunction and result in serious injury.
•This equipment is for professional use only.
•Read all instruction manuals, tags, and labels before operating theequipment.
•Use the equipment only for its intended purpose. If you are not sure, call VERDER After Sales Service.
•Do not alter or modify thisequipment.
•Check equipment daily. Repair or replace worn or damaged parts immediately.
•Do not exceed the maximum working pressure of the lowest rated component in your system. This
equipment has a 8.3 bar maximum working pressure at 8.3 bar maximum incoming air pressure.
•Use fluids and solvents which are compatible with the equipment wetted parts. Refer to the Technical
Data section of all equipment manuals. Read the fluid and solvent manufacturer’s warnings.
•Do not use hoses to pull equipment.
•Route hoses away from traffic areas, sharp edges, moving parts, and hot surfaces. Do not expose
VERDER hoses to temperatures above 82°C or below -40°C.
•Do not lift pressurized equipment.
•Wear hearing protection when operating this equipment.
•Comply with all applicable local, state, and national fire, electrical, and safety regulations.

819.4496 5
Warning
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes can cause serious injury or death if splashed in the eyes or on the skin, inhaled, or
swallowed.
•Know the specific hazards of the fluid you areusing.
•Store hazardous fluid in an approved container. Dispose of hazardous fluid according to all local, state,
and national guidelines.
•Alwayswearprotective eyewear,gloves,clothing,andrespirator asrecommendedbythe fluidandsolvent
manufacturer.
•Pipe and dispose of the exhaust air safely, away from people, animals, and food handling areas. If the
diaphragm fails, the fluid is exhausted along with the air. See Air Exhaust Ventilation on page 12.
FIRE AND EXPLOSION HAZARD
Improper grounding, poor ventilation, open flames or sparks can cause a hazardous condition and result in a
fire or explosion and seriousinjury.
•Ground the equipment. Refer to Grounding on page6.
•Never use a non–conductive polypropylene or PVDF pump in an explosive atmosphere or with non-
conductive flammable fluids as specified by your local fire protection code. Refer to Grounding on page6
for additional information. Consult your fluid supplier to determine the conductivity or resistivity of your
fluid.
•If there is any static sparking or you feel an electric shock while using this equipment, stop pumping
immediately. Do not use the equipment until you identify and correct theproblem.
•Provide fresh air ventilation to avoid the buildup of flammable fumes from solvents or the fluid being
sprayed, dispensed, or transferred.
•Pipe and dispose of the exhaust air safely, away from allsources ofignition. If thediaphragm fails,the fluid
is exhausted along with the air. See Air Exhaust Ventilation on page 12.
•Keep the work area free of debris, including solvent, rags, andgasoline.
•Electrically disconnect all equipment in the work area.
•Extinguish all open flames or pilot lights in the workarea.
•Do not smoke in the work area.
•Do not turn on or off any light switch in the work area while operating or if fumes are present.
•Do not operate a gasoline engine in the workarea.

6 819.4496
Installation
General Information
1. The Typical Installation shown in FIG. 2 is only aguide
for selecting and installing systemcomponents. Contact
your VERDER Customer Service for assistance
in planning a system to suit yourneeds.
2. Always use Genuine VERDER Parts andAccessories.
Be sure all accessories are adequately sized and
pressure-rated to meet the system’srequirements.
3. Reference numbers and letters in parentheses refer to
the callouts in the figures and the parts listson pages
28–29.
4. Variations in color between the plastic componentsof
this pump are normal. Color variation does not affect the
performance of the pump.
Tightening Screws Before First Use
Before using the pump for the first time, check and retorque
all external fasteners. See Diaphragm Kits, page 29.After
the first day of operation, retorque the fasteners. Although
pump use varies, a general guideline is to retorque fasteners
every twomonths.
Grounding
The non–conductive polypropylene and PVDF pumps are
not conductive. Attaching the ground wire to the grounding
strip grounds only the airmotor.
When pumping conductive flammable fluids,always ground
the entire fluid system by making sure the fluid has an
electrical path to a true earth ground. See FIG. 1.
Never use a non–conductive polypropylene or PVDF pump
in an explosive atmosphere or with non-conductive
flammable fluids as specified by your localfire protection
code.
U.S. Code (NFPA 77 Static Electricity) recommendsa
conductivity greater than 50 x 10–12 Siemans/meter
(mhos/meter) over your operating temperature range to
reduce the hazard of fire. Consult your fluid supplier to
determine the conductivity or resistivity of yourfluid. The
resistivity must be less than 2 x 1012 ohm-centimeters.
Warning
TOXIC FLUID HAZARD
Hazardous fluid or toxic fumes cancause
serious injury or death if splashed in the
eyes or on the skin, inhaled, orswallowed.
1. Read TOXIC FLUID HAZARD on page 5.
2. Use fluids and solvents which are compatible with the
equipment wetted parts. Refer to the Technical Data
section of all equipment manuals. Read the fluid and
solvent manufacturer’s warnings.
Warning
FIRE AND EXPLOSION
HAZARD
This pump must be grounded. Before
operating the pump, ground the system
as explained below. Also, read the
section FIRE AND EXPLOSION
HAZARD, on page 5.

819.4496 7
Installation
Grounding (continued)
To reduce the risk of static sparking, ground the pump and
all other equipment used or located in the pumping area.
Check your local electrical code for detailed grounding
instructions for your area and type of equipment.
Ground all of this equipment:
•Air Motor: Connect a ground wire and clamp as shown
in FIG. 1. Loosen the grounding screw (W). Insert one
end of a 1.5 mm2minimum ground wire (Y) behind the
grounding screw and tighten the screw securely.
Connect the clamp end of the ground wire to a true
earth ground. Order Part No. 819.0157 Ground Wire
and Clamp.
NOTE: When pumping conductive flammable fluids with a
non–conductive polypropylene or a PVDF pump,
always ground the entire fluid system. See the
Warning on page 6.
•Air and Fluid hoses: Use only electrically conductive
hoses.
•Air compressor: Follow the manufacturer’s
recommendations.
•All solvent pails used when flushing, according to local
code. Use only metal pails, which are conductive. Do
not place the pail on a non-conductive surface, such as
paper or cardboard, which interrupts the grounding
continuity.
•Fluid supply container: Follow local code.
FIG. 1 ________________________
02646B
Y
W

8 819.4496
Installation
Air Line
1. Install the air line accessories as shown in FIG. 2. Mount
these accessories on the wall or on a bracket. Be sure
the air line supplying the accessories is electrically
conductive.
a. Install an air regulator (C) and gauge to control
the fluid pressure. The fluid outlet pressure will be
the same as the setting of the air regulator.
b. Locate one bleed-type master air valve (B) close
to the pump and use it to relieve trapped air. See
the Warning at left. Locate the other master air
valve (E) upstream from all air line accessories
and use it to isolate them during cleaning and
repair.
c. The air line filter (F) removes harmful dirt and
moisture from the compressed air supply.
2. Install an electrically conductive, flexible air hose(A)
between the accessories and the 1/2 npt(f) pumpair
inlet (N). See FIG. 2. Use a minimum 13 mm ID air hose.
3. Screw an air line quick disconnect coupler (D) onto the
end of the air hose (A); be sure the coupler porting is
large enough to not restrict the air flow, which will affect
pump performance. Screw the mating fitting intothe
pump air inlet snugly. Do not connect the coupler (D) to
the fitting until you are ready to operate the pump.
FLOOR MOUNT TYPICAL INSTALLATION
FIG. 2 _______________________________________________________________________
Warning
A bleed-type master air valve (B) is required in your system
to relieve air trapped between this valve and the pump.
Trapped air can cause the pump to cycleunexpectedly,
which could result in serious injury, including splashing in
the eyes or on the skin, injury from moving parts, or
contamination from hazardous fluids. See FIG. 2.
YJ
FEB C
A
D
KL
G
H
R
S
N
04614B
KEY
A ElectricallyConductiveAirSupplyHose
B Bleed-Type Master Air Valve
(requiredforpump)
C AirRegulator
D Air Line QuickDisconnect
E Master Air Valve (foraccessories)
F Air Line Filter
G Fluid Suction Hose
HFluidSupply
J FluidDrainValve(required)
K Fluid Shutoff Valve
L FluidHose
N 1/2npt(f)Air Inlet Port
R 2 in. Fluid InletFlange
S 2 in. Fluid OutletFlange
Y GroundWire(required;seepage7 for
installationinstructions)

819.4496 9
Installation
Mountings
1. Be sure the mounting surface can support the weight of
the pump, hoses, and accessories, as well as the stress
caused during operation.
2. For all mountings, be sure the pump is bolted directly to
the mounting surface.
3. For ease of operation and service, mount the pump so
the air valve cover (2), air inlet, and fluid inlet and outlet
ports are easily accessible.
4. Rubber Foot Mounting Kit 819.4333 is available to
reduce noise and pump movement duringoperation.
5. Prolonged exposure to UV radiation will degrade natural
polypropylene components of the pumps. To prevent
potential injury or equipment damage, do not expose
pump or the plastic components to direct sunlight for
prolonged periods.
Fluid Suction Line
1. The pump fluid inlet (R) is a 2 in. raised face flange.
Refer to Flange Connections on page10.
2. Ifthe fluidinlet pressuretothe pumpis morethan 25%of
theoutlet workingpressure, theball checkvalveswill not
close fast enough, resulting in inefficient pump
operation.
3. At inlet fluid pressures greater than 1.05 bar, diaphragm
life will be shortened.
4. See the Technical Data on page 33 for maximum
suction lift (wet and dry).
Fluid Outlet Line
1. The pump fluid outlet (S) is a 2 in. raised face flange.
Refer to Flange Connections on page10.
2. Install a fluid drain valve (J) near the fluid outlet. See the
Warning above.
3. Install a shutoff valve (K) in the fluid outletline.
Caution
The pump exhaust air may contain contaminants. Ventilate
to a remote area if the contaminants could affect your fluid
supply. See Air Exhaust Ventilation on page 12.
Warning
A fluid drain valve (J) is required to relieve pressure in
the hose if it is plugged. The drain valve reduces the risk
of serious injury, including splashing in the eyes or on
the skin, or contamination from hazardous fluids when
relieving pressure. Install the valve close to the pump
fluid outlet. See FIG. 2.

10 819.4496
Installation
Flange Connections
The fluid inlet and outlet ports are 2 in. raised face, standard
150 lb class pipe flanges. Connect 2 in. flanged plastic pipe
to the pump as follows. You will need:
•torque wrench
•adjustable wrench
•a 6 in. diameter, 1/8 in. thick PTFE gasket, with four 0.75 in.
diameter holes on a 4.75 in. diameter bolt circle, and a
2.20 in. diametercenter
•four 5/8 in. x 3 in.bolts
•four 5/8 in. spring lockwashers
•eight 5/8 in. flat washers
•four 5/8 in. nuts.
1. Place a flat washer (E) on each bolt (C). Refer to FIG. 3.
2. Align the holes in the gasket (B) and the pipe flange (A)
with the holes in the pump outlet flange(S).
3. Lubricate the threads of the four bolts. Install the bolts
through the holes and secure with the washers (E),
lockwashers (D), and nuts (F).
4. Hold the nuts with a wrench. Refer to the tightening
sequence in FIG. 3 and torque the bolts to 27–41 N•m.
Do not over-torque.
5. Repeat for the pump inlet flange(R).
BOLT TIGHTENING SEQUENCE
FIG. 3 _______________________________________________________________________
1
04405
F
E
S
B
A
E
D
C
R
1
2
3
4
1
04615B
KEY
A FlangedPlasticPipe
B PTFEGasket
C Bolt
D Lockwasher
E Flat Washer
F Nut
R 2 in. Fluid Inlet Flange
S 2 in. Fluid Outlet Flange
Lubricate threads. Torque to 27–41 N•m. Do
not over-torque.
1