56
7500 Series Manual
11 Maintenance and Repair
Do not remove the window from the 7500-01-... control unit. If the window is damaged or removed, the
control unit cannot be repaired. A new unit is required.
Do not remove the accessory conduit hub extension, 7500-HUB-AA-01, from the 7500-01-... control unit.
If the conduit hub is damaged or removed, the conduit hub cannot be reinstalled. A new conduit hub is
required. The conduit hub is an accessory and is not included with the 7500-01-... control unit.
The only special maintenance required on the 7500 system is cleaning of the pneumatic filters on the
overall installation, when used, and periodic function checks. This includes pressure readings within the
specifications contained in this manual. When checking pressure measurements of the 7500 control unit,
use calibrated equipment to determine the measurements, or contact a Pepperl+Fuchs representative or the
factory to send the device back for function verification.
Warning!
There are no user-serviceable portions of the 7500 system.
Warning!
When operating the 7500 system in conjunction with a hazardous area, do not modify the system. If there is
a defect, the product may need to be replaced. Repairs can only be performed by a Pepperl+Fuchs specialist
who is trained and authorized to repair the defect.
Warning!
When servicing, installing, and commissioning, the area must be free of all combustible material and/or
hazardous explosive gas. Only the terminal compartment of the control unit is accessible to users. Under no
circumstances shall the control unit or vent be dismantled or removed from the supplied enclosure, unless
instructed in this manual.
Contact Pepperl+Fuchs customer service for an RMA (return merchandise authorization).
12 Troubleshooting
Problem Possible Reason Solution
Purge cycle does not start No air to system Check air supply, make sure mini-
mum pressure is available.
Minimum pressure not high
enough
Check vent and enclosure seals,
check compensation valve setting.
Control unit in dust mode Program 5 was used instead of
programs 1-4. Select the proper
program.
13 Dismantling and Decommissioning
Abide by all local and any other code requirements for disposing of electronic equipment. When disposing of
any component of the 7500 system, VOID must be marked across all certification labels.
To Next Page
Loading...
Need help?
General
