Take full visual inspection for all components especially for high power consumption such as blower’s magnetic contactors, electrical heater’s magnetic contactors about the tightness of wiring. Measure resistance of each phase of heater bank should be almost same (see also Electrical Scheme in Appendix A). Test heater circuit breaker by pressing test button on it and all safety devices such as safety probe, shunt trip coil (see OQ for NR coater). Check ventilators operating by starting the pan and filters cleaning.