Optidrive HVAC User Guide V2.00
www.invertekdrives.com
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3.10.
Routine Maintenance
The drive should be included within the scheduled maintenance program so that the installation maintains a suitable operating environment,
this should include:
Ambient temperature is at or below that set out in the “Environment” section.
Heat sink fans freely rotating and dust free.
The Enclosure in which the drive is installed should be free from dust and condensation; furthermore ventilation fans and air filters
should be checked for correct air flow.
Checks should also be made on all electrical connections, ensuring screw terminals are correctly torqued; and that power cables have no signs
of heat damage.
3.11.
Gland Plate and Lock Off
The use of a suitable gland system is required to maintain the appropriate IP / Nema rating. Cable entry holes will need to be drilled to suit
this system. Some guidelines sizes are defined below:
Please take care when drilling to avoid leaving any particles within the product.
Cable Gland recommended Hole Sizes & types:
Min Gland Rating
Hole Size
Imperial
Metric
Size 2
IP66
3 x 22mm
3 PG13.5
3 x M20
Size 3
IP66
1 x 22mm and 2 x 28mm
1 PG13.5 and 2 PG16
1 x M20 and 2 x M25
UL rated ingress protection ("Type " ) is only met when cables are installed using a UL recognized bushing or fitting for a flexible-
conduit system which meets the required level of protection ("Type")
For conduit installations the conduit entry holes require standard opening to the required sizes specified per the NEC
Not intended for rigid conduit system
Power Isolator Lock Off – IP66 with Built in Isolator Option
On the switched models the main power isolator switch can be locked in the ‘Off’ position using a 20mm standard shackle padlock (not
supplied).
IP66 / Nema 12 Unit Lock Off
IP66 / Nema 4X Unit Lock Off
