Grain Systems PNEG-1702 - Manual (Page 16)

4. Installation
16 PNEG-1702 ETL Listed GSI/FFI Portable Dryer Manual
Electrical Power Supply
Power Supply
An adequate power supply and proper wiring are important factors for maximum performance and long
life of the dryer. Electrical service must be adequate to prevent low voltage damage to motors and control
circuits.
(See Chapter 5 on Pages 24-36.) Power supply for 1 phase models must include a neutral wire.
Transformers and Wiring Voltage Drop
Advise the service representative of the local power supplier that an additional load will be placed on the
line. Check the KVA rating of transformers, considering total horsepower (HP) load. The power supply
wiring, main switch equipment and transformers must provide adequate motor starting and operating
voltage. Voltage drop during motor starting should not exceed 14% of normal voltage. After motor
is running at full speed, it should be within 8% of normal voltage. Check electrical load information
(See Chapter 5 on Pages 24-36) for HP ratings and maximum amp loads.
Power Supply Disconnect
All dryers are equipped with a power disconnect switch in the power box to permit total power shutdown
before opening the power box door, as required for inspection and service. The power disconnect switch
is located on the power box door for quick shutdown.
Machine to Earth Grounding
A Machine to Earth Ground Rod must be installed at the dryer. Place the ground rod that comes standard
within 8' of the dryer and attach it to the dryer control panel with at least a #6 solid, bare, copper ground
wire and the clamp provided. The grounding rod located at the power pole will not provide adequate
grounding for the dryer. Proper grounding will provide additional safety in case of any short and will ensure
long life of all circuit boards, the SCR drive and the ignition system. The ground rod must be in accordance
with local requirements.
All wiring to be done in accordance with the Canadian Electrical Code.