Do not attempt to tighten bolts or screws that are not discussed in this user guide and that are
not needed for normal installation and maintenance procedures. The sealing of the bolts and
screws can break.
Correct supervision and maintenance of the electric machine makes sure that the electric machine has
reliable operation and designed lifetime.
Maintenance schedule
Object
Check/Task
Weekly Monthly Yearly
General construction Operation
Noise, vibration. If clearly increased, contact Danfoss.
X
Mounting
Bolt tightness. Tighten to proper value if necessary. Applies to bolts and
screws that are discussed in this user guide. See Chapter
X
Bearings
Detect any unusual noise or vibration. If exists, contact Danfoss.
X
Enclosure and connected
parts
Check cleanliness. Clean if necessary. See Chapter
.
X
Shaft seals
Check the wear. Replace if necessary.
X
Electrical system
Cables
Wearing of the cables. Replace if necessary.
X
Electrical connections
Check connections. Make sure that tightening torque is correct for the
cable glands. See Chapter
.
X
Groundings (earthings)
Check groundings (earthings). Make sure that the connection resistance
is correct. Re-connect if necessary.
X
Anti-condensation
heater
Check anti-condensation heater connections and resistance, if the option
is installed. If needed, contact Danfoss.
X
Cooling system
Operation
Functioning. Cooling system functions as specified.
X
Tubing and connection
tightness
No visible leakage. If leaking, tighten the connections, or replace parts.
X
Ventilation plug
Cleanliness. Clean if necessary. See Chapter
.
X
Coolant flow
Coolant flow direction. It is recommended to change the coolant flow
direction by changing the connections or flow direction from the pump.
See Chapter
X
Coolant quality
Coolant as specified. Correct glycol used, and water/glycol mixture
correct. Refill if necessary. See Chapter
X
Lubrication
Relubrication (grease
lubricated bearings)
Relubricate depending on the use (see Chapter
).
Maximum relubrication interval is six months.
X
Cleaning
Never open or remove the watertight ventilation plugs. Clean them only from the outside.
Risk of electric shock if the electric machine is cleaned against instructions allowing water to
go in to the electric machine.
Keep the electric machine clean. For cleaning, use non-abrasive and non-corrosive cleaning products.
User Guide
EM-PMI300-T310
Maintenance
52 |
©
Danfoss | April 2023
BC265858156812en-000202
