© Edwards Limited 2008. All rights reserved. Page 35
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Storage and disposal
A313-01-880 Issue A
6 Storage and disposal
6.1 Storage
If you will store the pump in temperatures close to, or below, 0 °C (32 °F), you must drain the cooling-water
from the pump, or add a suitable anti-freeze to the pump.
6.1.1 Preparation
1. Shut down the pump as described in Section 4.3.
2. If necessary, disconnect the electrical supply from the pump motor (refer to the Motor Manual supplied with
your HV pump) or disconnect the drive and transmission system from the pump drive shaft (refer to the
manufacturer’s instructions supplied with your transmission system and/or to Section 3.7.1).
3. If necessary, purge your system and the HV pump with dry air, and disconnect the pump from your system
pipelines.
4. Disconnect your cooling-water supply pipelines from the pump.
5. Place and secure protective covers over the pump inlet, outlet and services connections.
6. If required, use suitable lifting equipment to move the pump to its storage area: refer to Section 3.3.
7. If you will store the pump for longer than six weeks, refer to the requirements in Section 6.1.2.
8. Store the pump in clean, dry conditions in a well-ventilated place that is free from vibration or shocks.
6.1.2 Long-term storage
If the pump is to be stored for longer than six weeks:
1. Drain the oil from the drive end and non-drive end covers: refer to Section 5.7.
2. Fill the drive end and non-drive end covers with a suitable protective oil (see Table 13): use the method in
Section 5.5.
3. Turn the pump drive shaft by hand through three or four revolutions, to turn the pump and prevent seizure.
4. Spray a suitable protective oil (see Table 13) through the inlet and into the pump.
5. If required, spray a suitable protective oil (see Ta ble 13) on the outer surfaces of the pump, to inhibit corrosion.
During storage, every 14 days or less, turn the pump drive shaft by hand through a quarter of a revolution, to turn
the pump and prevent seizure or degradation of the bearings.
When required for use after storage:
1. Drain the protective oil from the drive end and non-drive end covers, then fill the end covers with new oil: refer
to Section 5.7.
2. Use a suitable cleaning solution (such as alcohol or white spirit) to clean the rotors:
Moisten a suitable clean, lint-free cloth with the cleaning solution.
Clean the rotors which are visible through the inlet port.
Turn the pump drive shaft as necessary to access the other rotors.
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