28
•
If not utilising a hygrometer, purge loss may be reduced during periods of low or no air demand the
Energy Management Feature (EM) may be utilised. A detailed description is given in Section 7.
•
For remote indication of any electrical faults, the Alarm Contacts may be utilised to send a signal to a
light or remote service panel. Further details are given on page 26.
•
An optional pre-filter drain solenoid valve is available for the DMC controller. When installed per figure
4.10, the drain will open for 2 seconds at the beginning of each cycle. Operational schematic, figure
6.8 provides additional detail.
Section 6:
Operation
Please note that the Energy Management feature should not be used when a hygrometer is
installed in the dryer.
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PRODRY PD0046 - PD0360 Instruction Manual
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Walker Filtration
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Section 6: Operation
•
•
s
s
•
Start-up procedure
•
•
Close valves A, B, C and D.
•
Switch on compressor.
•
Open valve A slowly.
•
Check there are no leaks from the dryer
•
Switch on electric power, the panel will display the
operational features.
•
•
The above cycle then repeats.
On initial commissioning, only run the dryer for a
minimum of 6 hours to ensure dewpoint is adequate.
Open valve B slowly.
Please note that the Energy Management feature should
not be used when a hygrometer is installed in the dryer.
Shut-down Procedure
•
Close valve B.
•
Close valve A.
•
Leave dryer running for 15 minutes to fully de-pressurise.
• Switch off all electrical power to the dryer.
Under no circums tances must compressed air be allowed
to flow through the dryer following switc
of electrical
power. This will result in terminal failure of the desiccant
cartridges and regeneration will not be possible.
A
C
B
D
Figure 6.2: Typical installation
Start-up procedure
•
Refer to figure 6.2
•
Close valves A, B, C and D.
•
Switch on compressor.
•
Open valve A slowly.
•
Check there are no leaks from the dryer
•
Switch on electric power, the panel will display the
operational features.
•
The dryer will enter standard cycle mode.
•
Open valve B slowly.
Shut-down Procedure
•
Close valve B.
•
Close valve A.
•
Leave dryer running for 15 minutes to fully de-
pressurise.
•
Switch off all electrical power to the dryer.
On initial commissioning, only run the dryer for
a minimum of 6 hours to ensure dewpoint is
adequate.
Under no circumstances must compressed air
be allowed to flow through the dryer following
switch off of electrical power. This will result in
terminal failure of the desiccant cartridges and
regeneration will not be possible.