© Edwards Limited 2016. All rights reserved. Page 11
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Installation
LRP200000201 Issue A
Check that the operating data corresponds to the data shown on the heat exchanger nameplate.
Ensure the maximum allowable pressure drop in the cooling liquid circuit is not exceeded. If necessary, use
reducers immediately upstream and downstream of the heat exchanger cooling liquid connections.
If necessary and not already provided, install a filter in the cooling liquid supply pipeline to prevent debris
from fouling the heat exchanger, considering pressure drop in both the clean and dirty conditions.
3.4.5 Connect drains
Using a suitable gasket as a seal, connect the pumping system drain connections to a safe location.
3.5 Connect electrical supplies
Connect the electrical supply to the drive motor in accordance with the manufacturer's instructions.
If the drive motor is fitted with thermistors, it is recommended the thermistors be connected to a suitable control
circuit in accordance with the manufacturer's instructions.
3.6 Commissioning the pumping system
3.6.1 Safety
A suitably trained and supervised technician must inspect and commission the pumping system. Contact
Edwards for further assistance.
Ensure operators have read and understood the Associated Publications listed in the Section 1.2.7 of this
manual.
Operators must wear the appropriate safety clothing if contact with contaminated components is
anticipated.
Ensure that all inspection work is performed in a properly lighted area and in compliance with local and
national safety requirements.
Isolate all electrical equipment in the pumping system from the electrical supply before starting any work so
that they cannot be operated accidentally.
Do not start the liquid ring pump full of seal liquid as this could damage the pump.
Do not operate the liquid ring pump without seal liquid in the pump. If so, there may be a risk of damage to
the pumps.
Ensure the electrical installation conforms to local and national safety requirements. It must be
connected to a suitably fused and protected electrical supply with a suitable earth (ground) point.
Incorporate a manual reset device in the control equipment to prevent the pumping system from
automatically starting after a fault condition has been corrected.
Obey the safety instructions in this section and take note of appropriate precautions. Failure to
observe these instructions may result in injury to people and damage to equipment.
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