Pulsafeeder Isochem RGT IOM - Manual (Page 13)

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6. Maintenance
The timing for maintenance of the pump is established primarily on past performance. Each
installation is different. Therefore detailed maintenance records of past performance can be
invaluable for determining future preventative maintenance intervals. During routine pump
inspections pay particular attention to the bearings, wearplates, and impeller, as those areas will
determine future maintenance intervals. For motor maintenance instructions consult the motor
manufacturer.
Before performing any maintenance requiring pump disassembly, be sure to flush and
drain pump and magnetic drive sections thoroughly with a neutralizing fluid. Wear
protective clothing and handle equipment with proper care.
1. When changing a pump from one service to another, be sure to check that all wetted parts of
the pump are compatible with the fluid to be handled and that the motor is sufficiently sized
for the application. If in doubt contact your Isochem supplier.
2. All magnetic drive couplings have a specific maximum torque limit. If this torque is
exceeded the drive will decouple. Operation in the decoupled mode should be avoided as
high temperatures could be generated.
3. Should the pump exhibit reduced flow rate or pressure capability, noise, or otherwise
abnormal operation, first refer to the troubleshooting section. If the problem cannot be found,
inspect the pump for wear or damage. It can be easily opened for partial wet end cleaning
and inspection without disturbing piping connections by removing just the front cover.
6.1 Maintenance Precautions
1. Drain and flush pump and magnetic drive before any pump disassembly. Access to the
magnetic drive area is provided by a drain plug in the pump housing. Use caution as this
section of the pump will not fully self-drain.
2. The exposed magnets on the drive magnet assembly are very fragile and will chip easily. Use
extreme care while handling them. Keep wristwatches, credit cards, ID badges, and other
sensitive items away from the magnetic fields.
3. Take care to avoid particles or objects from attaching themselves to the drive magnets. It is
difficult to remove small particles and larger objects could be attracted with enough force to
break the magnets.
4. Be careful during disassembly and re-assembly of the drive and driven magnet assemblies.
The attraction forces are high and when the magnets come close together there is a strong
tendency to snap together suddenly, possibly causing pinching or worse to fingers. Get help,
often two people may be required to safely separate or re-attached the drive and driven
sections of the pump.
D O NOT MACHINE THE MAGNETS IN THE DRIVE OR DRIVEN MAGNET ASSEMBLIES . T HE
DUST THAT WOULD BE PRODUCED IS HIGHLY FLAMMABLE .
5. The model number stamped on the pump nameplate identifies the pump type and other
details. Refer to the model number chart if you are unsure of exactly what type of pump you
have. Always refer to the full model and serial number in any correspondence with your
Isochem supplier.