ENV-10000-E-02 3ENVIROGEAR PUMP COMPANY
SECTION 1
CAUTIONS
CAUTION: In any positive-displacement pump
system, a reliable pressure protection device
must be used in the discharge piping to avoid a
dangerous pressure increase, which could cause
the pump or any component in the discharge
piping to burst, which could cause serious injury.
A pump-mounted integral relief valve is not
intended to be used in this manner.
CAUTION: This pump contains powerful
permanent magnets that can cause serious injury.
Read the appropriate section of this service
manual before doing any service work.
DANGER: Magnetic Field. Can disrupt medical im-
plantssuchaspacemakers. Implantwearersshould
remain a minimum of 1ft (0.3m) away from pump
and 3ft (1m) away from disassembled magnets.
Pinch Point. Inner and Outer magnets strongly at-
tract each other which can crush and cut.
CAUTION: Magnets inside pump can damage
electronic equipment or magnetic media.
CAUTION: This pump is designed to rotate only
in the direction indicated. Do not run the pump in
the opposite direction, for long periods because
internal passageways that control axial thrust
will not work correctly, causing premature wear
and reduced pumping efficiency.
CAUTION: The inner magnets on the back of the
rotor assembly are strongly attracted to the outer
magnets in the outer drive assembly. During the
separation process, there will be a strong force
of up to 300 lbs (136 kg) trying to pull them back
together, which can create a powerful pinch point.
To safely separate the rotor assembly from the
outer drive assembly, follow the instructions
below and use the following equipment:
CAUTION: Carbon-graphite bushings are very
brittle, so they must be handled and assembled
using great care.
CAUTION: You must press the bearing by its
inner ring to avoid damaging it.
CAUTION: Failure to have each magnet segment
in opposite polarity with adjacent magnets will
cause a significant reduction of coupling torque.
CAUTION: Maximum temperature limits are
base upon mechanical stress only. Certain
chemicals will significantly reduce maximum
safe operating temperatures. Consult Chemical
Resistance Guide for chemical compatibility and
temperature limits.
CAUTION: Prevention of static sparking – if static
sparking occurs, fire of explosion could result.
Pump, valves, and containers must be grounded
to a proper grounding point when handling
flammable fluids and whenever discharge of
static electricity is a hazard.
CAUTION: Always wear safety glasses when
operating pump.
• Crane, hoist or other suitable lifting device
capable of generating at least 400 lbs
(182 kg), and
• Sturdy workbench that has the following
features:
is positioned beneath the lifting device,
and is firmly anchored to the floor, or if
unanchored, the workbench must weigh at
least 400 lbs (182 kg), and is strong enough
to resist a lifting force of up to 400 lbs (182
kg). Pump Disassembly Tool F-00096 or
F-00097.
• Always use an arbor during assembly to
guide and align the bushings.
• When pressing bushings, use a light
lubricant.
• When pressing bushings, always use a
smooth, continuous motion – stopping with
the bushing partially exposed can crack the
bushing.
• After assembly, always inspect the bushings
closely for cracks.
