User`s manual

Chapter 7 - Maintenance
GP-477R/577R Series User's Manual
7-3
To keep your GP unit in its best condition, please inspect the following points
periodically.
GP Operation Environment
• Is the operating temperature within the allowable range?
(0
o
C to 50
o
C for GP-477R**; 0
o
C to 40
o
C for GP-577R**)
• Is the operating humidity within the specified range?
(20% RH to 85% RH for GP-477R**; 30% RH to 85% RH for GP-
577R**)
• Is the operating atmosphere free of any corrosive gasses?
Electrical Specifications
• Is the input voltage correct?
Units using AC 85 to 132V:
GP477R-EG11, GP577R-TC11, GP577R-SC11
Unit using DC 24V±20%:
GP477R-EG41-24VP, GP577R-TC41-24VP
Related Items
• Is are all cables connected properly? Are they loose?
• Are all mounting brackets holding the unit securely?
• Are there many scratches or traces of dirt on the installation gasket?
7.2 Periodic Check Points