5
5.0 Initial Start-up
(Start up after prolonged inoperative periods)
5.1 Preconditions
The desiccant compressed air-dryer is ready for operation when:
• The device has been installed in accordance with section
4. "installation“.
• All inlet and outlet lines have been correctly connected.
• The required forms of energy (electricity, compressed air)
are available.
• A stable power supply must be available.
• The shut-off devices (e.g. butterfly valve, ball valve) in the
compressed-air inlet line are opened and in the outlet line
are closed (if installed).
• The compressed-air bypass is open (if installed).
• The appropriate operating voltage is supplied to the dryer.
• Filters are mounted.
• Condensate piping mounted.
IMPORTANT:
The dryer is preset at the factory, see chapter 6.6.4.
5.2 Switching ON the Dryer
The device is to be switched on only when all the condi-
tions specified in section 5.1 have been fulfilled.
A. Dryer is under operating pressure.
B. Press the "I / 0“ button.
C. The dryer must regenerated for approx. 6 hours without
compressed-air being supplied to the network.
D. Open the shut-off device in the compressed-air outlet line
(if installed).
E. Close the compressed-air bypass (if installed).
5.3 Operation
IMPORTANT:
Please note the information provided in Chapter 7.
"Servicing and Maintenance“.
5.4 Switching OFF the Dryer
A. Press the "I / 0“ button.
• Dryer is switched off.
CAUTION – The dryer is still pressurized!
To depressurize see Chapter 7. "Servicing and Mainte-
nance“.
6.0 Operation
(Switching on, Switching off, Controls)
6.1 Preconditions for Operation
The dryer is ready for operation when the following conditions
have been fulfilled:
• The installation of the dryer in accordance with section 4.
"Installation“.
• Dryer has been commissioned in accordance with section 5.
"Initial Start-Up“.
• All inlet and outlet lines have been correctly connected.
• The required forms of energy (electricity, compressed air)
are available.
• The compressed-air inlet and outlet line are pressurized.
• Shut-off devices (butterfly valve, ball valve) in the com-
pressed-air inlet and outlet lines are open.
• Bypass (if installed) in the compressed-air line up-line of
the desiccant compressed-air dryer is closed.
• The appropriate operating voltage is supplied to the dryer.
• Slowly pressurize the system up to working pressure.
6.2 Switching ON the Dryer
The dryer is to be switched on only when all the require-
ments specified in section 6.1 "Preconditions“ have been
fulfilled.
A. Press the "I / 0“ button.
• The dryer is now in operation.
If "remote control" is selected (see Section 6.6.4), the dryer can
be stopped via contact REM/GND (see diagram).
No connection means "Remote On".
Or if selected via Modbus:
When remotely controlled via Modbus, the dryer will remain in
its state (on / off) if the Modbus connection is disconnected.
6.3 Operation
IMPORTANT:
Please note the information provided in Chapter 7.
"Servicing and Maintenance".
6.4 Switching OFF the Dryer
A. Close the shut-off devices in the compressed air line before
and after the desiccant dryer to avoid a flow through the
dryer when it is switched off. Close the condensate line to
the condensate drain to avoid flooding the desiccant dryer
with condensate in the event of internal pressure loss.
B. Press the "I / 0“ button. (Only possible on local operation.
De-energize at remote operation).
• Dryer is switched off.
CAUTION – The dryer is still pressurized!
To depressurize see Chapter 7. "Servicing and Mainte-
nance“.
IMPORTANT:
The dryer is designed for continuous operation.
After prolonged inoperative periods, the desiccant compressed
air dryer is to be restarted as specified in section 5.2 "Switch-
ing ON the Dryer“.
Summary of Contents for SPXFLOW HSHD Series
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