Maintenance / Repair - VERDER VERDERAIR HC-PURE SB Series Manual

MAINTENANCE / REPAIR

Flushing and storage
Flush the pump often enough to prevent fluid you
are pumping from drying or freezing in the pump
and damage it. Always flush the pump follow
the Pressure relief procedure on page 10 before
storing it for any length of time. Use a compatible
flushing agent. Flush the pump long enough to
be sure it is completely free from any previously
pumped liquid.
Tightening treaded connections
Before each use, check all hoses for wear or
damage and replace as necessary. Check to be
sure all threaded connections are tight and leak-
free. Tighten and retorque the pump if necessary.
Use torque values on page 23.
Preventive maintenance schedule
Establish a preventive maintenance schedule,
based on the pump's service history. This is
especially important for prevention of spoils or
leakage due to diaphragm failure.
Disassembly
IMPORTANT:
Follow the pressure relief procedure at
page 10 before starting to work at the
pump!
After a diaphragm rupture always make
sure no liquid is left at the air side of the
pump. Especially the muffler (07) have to be
checked before opening the pump.
The fluid side of the complete range of VA-HCP SB
pumps are built together the same way. The only
difference are the number of assembly pins (23)
used. The center section has the same built up for
VA-HCP 15SB to VA-HCP 50SB. Every VA-HCP
SB pump is delivered with an AV (Air Valve) tool
(Figure 7a, 7b, 7c, 7d) which has on side pins to
disassemble the air valve (27) and the opposite
side can be used to push out the outer part of air
valve from the center housing.
Disassembly of the ball valves
To have access to the ball valves you need to
disassembly of the manifolds first. To get the
ball valves (11), unscrew the clamps (24) with the
gaskets (22). Each time, replace the gaskets with a
new one after unscrewing the valve stopper.
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Disassembly of the side housings
To have access the internal parts of the pump, it
must be dismantled first. Unscrew the bolts on the
assembly pins (23), remove the spring washers,
than slide the side housings (2) apart. Remove the
assembly pins (23) from the center housing and
diaphragms.
21-VA-MA_Manual_HC-PURE SB_rev1-en | 23.06.2023
Figure 3
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