Repair; Pressure Relief Procedure; Check Valve Repair - VERDER VERDERAIR VA-E50 Manual

Repair

Repair Repair
Pressure Relief Relief Procedure Procedure
Pressure Pressure Relief Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
This equipment stays pressurized until pressure
is relieved manually. To help prevent serious
injury from pressurized fluid, such as splashing
in the eyes or on skin, follow the Pressure Relief
Procedure when you stop pumping and before you
clean, check, or service the equipment.
1. Remove power from the system.
2. Open the dispensing valve, if used.
3. Open the fluid drain valve to relieve fluid
pressure. Have a container ready to catch the
drainage.
4. Back out regulator knob to bleed any internal
air pressure.
Check Check Valve Check Valve Repair Valve Repair Repair
Tools Tools Required Tools Required Required
• Torque wrench
• 10 mm socket wrench (plastic pumps)
• 13 mm socket wrench (metal pumps)
• O-ring pick
NOTE: Kits are available for new check valve balls
NOTE: NOTE:
and seats in a range of materials. O-ring and fastener
kits also are available.
NOTE: NOTE: To ensure proper seating of the check balls, NOTE:
always replace the seats when replacing the balls.
Also, replace the o-rings every time the manifold is
removed.
859.0765
Disassemble the Disassemble Disassemble the Check the Check Check Valve
1. Follow the Pressure Relief Procedure, page
Remove power from the motor. Disconnect all
hoses.
2. NOTE NOTE NOTE for for for plastic plastic plastic pumps: pumps: Use hand tools until pumps:
thread-locking adhesive patch releases.
3. Use a 10 mm (plastic pump) or 13 mm (metal
pump) socket wrench to remove the manifold
fasteners (5) and nuts (42; used only on stainless
steel models), then remove the outlet manifold
(3).
4. Remove the seats (6), balls (7), and o-rings (8) if
present.
NOTE: NOTE: NOTE: Some models do not use o-rings (8).
5. Repeat for the inlet manifold (4), o-rings (8) if
present, seats (6), and balls (7).
To continue disassembly, see
Disassemble the Diaphragms, page
Reassemble Reassemble the Reassemble the Check the Check Valve Check
1. Clean all parts and inspect for wear or damage.
Replace parts as needed.
2. Reassemble in the reverse order, following all
notes in the illustration. Put the inlet manifold on
first. Be sure the ball checks and manifolds are
assembled exactly exactly exactly as shown. The arrows (A) on
the fluid covers (2) must
manifold (3).
Repair
Valve Valve
13.
Valve Valve
must point toward the outlet
must
11.
11