Wilo T 17 E3 Series - Page 62

en Appendix
62 WILO SE 2019-01
13.3.6 Maintenance and repair
ƒ Carry out maintenance tasks according to the regulations.
ƒ Only carry out maintenance tasks mentioned in these installation and operating in-
structions.
ƒ The spark-proof gaps may only be repaired according to the manufacturer’s design
specifications. It is not permitted to carry out repairs according to the values in
tables 1 and 2 of DIN EN 60079-1.
ƒ Only use screw plugs as stipulated by the manufacturer, that at least correspond to a
strength class of 600N/mm² (38.85long tons-force/inch²).
13.3.6.1 Repair of housing coating
The paint layer can become electrostatically charged in case of thicker
coats.DANGER!Risk of explosion! In explosive atmospheres, a discharge can cause
an explosion!
If the housing coating has to be repaired, the maximum coat thickness is 2mm
(0.08in)!
13.3.6.2 Changing the mechanical seal
Changing the seal on the fluid and motor side is strictly prohibited!
13.3.6.3 Replacing the connection cable
Changing the connection cable is strictly prohibited!