Refrigerant Manifold gauges set:  
 Check the manifold calibration before any use: 
Needles at 0 if no pressure. 
 In case of R-452A Manifold gauges not available: 
Use the standard R-404A Manifold gauges and refer to R-
452A Refrigerant Properties Information 
 Refrigerant Manifold gauges set includes:  
  HP Compressor hose, 
  HP receiver hose, 
  LP hose and vacuum hose.