The replies to most of the questions during operation can be found in Trouble Shooting in Operation Manual or Process Manual; if not, please contact Landglass: 

Service Phone:0086-379-65298873
Fax: 0086-379-65298869
24 hours phone:0086-13592083663
E-mail:land_khfw@landglass.com

We suggest that the operator can contact our service engineer directly for better communication, so that the problems will be removed as soon as possible!