Nordson iDry
r
Series Induction Dryers
45
Part 1075452
−
04
E
2016 Nordson Corporation
Repair
WARNING:
Allow only qualified personnel to perform the following tasks.
Follow the safety instructions in this document and all other related
documentation.
WARNING:
HIGH VOLTAGE! Disconnect and lockout all power to the
system before perfoming any of the procedures in this section. Failure to
observe may result in fatal injury to personnel.
Repair of the dryer consists mainly of replacing damaged or failed
components. Most repairs require no more than basic tools. Electrical
repairs should always be done by a qualified electrician with knowledge of
high voltage systems.
For help with repairs not covered in this manual, contact your Nordson
representative.
WARNING:
Never disarm any diagnostic device including but not limited to
the current sensor, overtemperature switches, air pressure switch, or coil
tray lid safety switches. Disarming diagnostic devices will void the warranty
and may cause equipment failure.
Coil and Coil Tube Replacement
The coil and coil tube can be replaced separately. They both must be
removed to replace one or the other.
1. Shut down the dryer, turn the main disconnect to the OFF position, then
disconnect and lockout power at an external disconnect
.
2. Unlock and open the coil tray lid.
3. If necessary, remove the screws securing the coil tray rear access panel
with a hex wrench. This provides access to the capacitator bank.
4. See Figure 43. Remove the screws (3) securing the exhaust vent
housing (1) and air heater (2) from the entrance and exit hubs (4). Move
the exhaust vent housing and air heater out of the way.
5. Remove the screws and rubber cushions (5) from the face of the hubs.
6. Disconnect the coil wiring (8) from the bus bar (9) terminals.
CAUTION:
There may be multiple coil wire bundles. If only replacing the
coil tube, make sure the wires are marked and match the corresponding bus
bars.
7. Lift the coil and tube assembly out of the dryer. Get help if needed.
8. Slide the coil tube out of the coil.