Johnson Pump MCHC, Instruction Manual

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MCHZ/EN (0912) 4.2
Installation 17
MCHZ
3 Installation
3.1 Safety
• Read this manual carefully prior to installation and commissioning. Non-observance of
these instructions can result in serious damage to the pump and this will not be
covered under the terms of our guarantee. Follow the instructions given step by step.
• Ensure that the pump can not be started if work has to be undertaken to the pump
during installation and the rotating parts are insufficiently guarded.
• Depending on the design the pumps are suitable for liquids with a temperature of up
to 120°C. When installing the pump unit to work at 70°C and above the user should
ensure that appropriate protection measures and warnings are fitted to prevent
contact with the hot pump parts.
• If there is danger of static electricity, the entire pump unit must be earthed.
• If the pumped liquid is harmful to men or the environment, take appropriate measures
to drain the pump safely. Possible leakage liquid from the shaft seal should also be
discharged safely.
3.2 Preservation
In order to prevent corrosion, the inside of the pump is treated with a preserving agent
before leaving the factory. Before commissioning the pump remove any preserving
agents and flush the pump thoroughly with hot water.
3.3 Environment
• The foundation must be hard, level and flat.
• The area in which the pump is installed must be sufficiently ventilated. An ambient
temperature or air humidity which is too high, or a dusty environment, can have a
detrimental effect on the operation of the electric motor.
• There should be sufficient space around the pump unit to operate and if necessary
repair it.
• Behind the cooling air inlet of the motor there must be a free area of at least ¼ of the
electric motor diameter, to ensure unobstructed air supply.
• For models with a stuffing box, check that the gland nuts have not been over-
tightened. If necessary slacken the gland nuts and re-tighten them by hand.