Pulsafeeder MPC - Manual (Page 13)

7. Storage Instructions
The MPC can be successfully stored for extended periods. The key to this
success is temperature and humidity control.
7.1 Short Term (0 - 12 months)
The MPC should be stored in a temperature and humidity controlled
environment. It is preferable to keep the temperature constant in the
range of -18
° to 60° Celsius (0° to 140° Fahrenheit). The relative
humidity should be 0 to 90% non-condensing.
If the MPC is installed on the pump, it should not be removed during this
period provided the above conditions can be applied to the pump as
well.
7.2 Long Term (12 months or more)
Storage of the MPC for periods of longer than twelve months is not
recommended. If extended storage is unavoidable the MPC should be
stored in accordance with those conditions stipulated for Short Term
Storage. In addition, a porous bag of 85g (3 oz) silica gel or similar
dessicant should be placed inside the enclosure. The cover should be re-
installed to seal the desiccant within the enclosure. The conduit
connections must be tightly capped. . Inspect the unit carefully for any
signs of damage and remove the desiccant before placing it into
operation
Special note for long-term storage:
If AC input power has not been applied to the MPC for a period
greater than 12 months, the controller must be prepared for
operation. The MPC should have AC power applied at the input for a
period of 8 hours before placing pump into normal operation. Refer
to Installation and Wiring section for AC power connection
instructions.