20
OPERATING AND MAINTENANCE MANUAL
Chapter 9
- Operation and Maintenance
NRC0020-0200 UL
The data in this manual are not binding and may be changed by the manufacturer without notice.
Reproduction of this manual, even partial, is strictly prohibited.
C
HAPTER
9
O
PERATION
AND
M
AINTENANCE
9 . 1
G e n e r a l o p e r a t i o n
Do not switch the dryer off in the absence of a flow of compressed air.
The dryer will switch on and off automatically.
The number of starts/stops depend mainly on the flow rate and temperature of the compressed air and the ambient temperature.
As explained in Chapter 7 “iDRY Electronic Controller”, the control unit will switch the compressor off automatically in the absence of a flow of
compressed air.
In this case the refrigerant compressor will run occasionally and for short periods to compensate for heat losses between the thermal mass and the
external atmosphere.
In this way the dryer will be ready to dry the air when the flow is restored.
If so desired, the user can switch off the dryer overnight or during weekend breaks without any problem.
In this case remember, when the unit is required for duty again, to switch the dryer on at least 10-15 minutes before the air compressor
.
9 . 2
M a i n t e n a n c e
CAUTION
Before installing or operating these dryers, ensure that all personnel involved have read and understood Chapter 2 “Safety” in this manual.
These dryers will give many years of trouble-free duty if they are properly maintained and serviced.
9.2.1 Access to the dryer
To access the electrical panel, remove the lateral screws fixing the top cover to the side panels of the cabinet.
Once the top cover has been removed, access the electrical panel components by unscrewing the nuts fixing the protective cover to the front panel.
9.2.2 Special maintenance of electrical panel (Mod. from NRC0125÷0250 )
In the case of any maintenance operation on the electrical panel, do not detach the earthing wire connected to the bracket, but proceed as follows:
Remove the protection cover via the screws as shown in the figure.
Do not remove the screw connected between the bracket and front panel.
Remove the protection cover via the screws as shown in the figure.
Do not remove the screw connected between the bracket and front panel.
Remove the laminated terminal.
Summary of Contents for NRC0020-0200 UL
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