If the unit is installed or stored in an environment with a temperature of over
104°F (40°C) be aware that the winding may be damaged and the grease might
need to be changed more often.
1.6 Maintenance Procedures
Before beginning work on the pump-motor unit, please take the following
precautions:
• Make sure power has been completely disconnected
• Wait for the unit to come to a complete stop.
• Allow the unit time to cool.
• Shut off lines and release pressure
• Make certain that no vacuum or gauge pressure is present in the lines/tanks to
be opened.
• Make sure that no fluids can escape
Please note that the rotating impeller is accessible when the inlet and discharge
connections are open. Do not reach into the unit through open connections or
insert objects into the unit through any openings. Serious injury could occur. If
the unit is running without piping or tubing, provide the inlet and discharge of the
unit with either additional mufflers or piping of a sufficient length to prevent
access to the impeller.
Check regularly to ensure the terminal box is free of any dirt or foreign
substances and there is no moisture or humidity present. Make certain the
terminal box cover and cable entries are tightly closed.
1.7 Hot Surfaces
During operation, the surface of the unit can reach temperatures of 320° F
(160° C). It is advisable to cover the unit with suitable touch protection (e.g. a
perforated plate or wire cover). Do not touch the unit during operation, and allow
time to cool after shut-down. Temperature-sensitive parts such as lines or
electronic components should not come into contact with the surface of the unit.
1.8 Hearing Protection
Make certain any missing or defective silencers are replaced. Noise emitted by
the unit can cause serious hearing damage. Conduct a noise measurement test
while the unit is running. If the unit operates over 90 dB(A), please place a
warning sign in the area where the unit has been installed and make certain that
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