Grain Systems PNEG-582 - Manual (Page 13)

13
ALWAYS DISCONNECT
AND LOCK OUT POWER
BEFORE WORKING ON OR
AROUND HEATER
SERIES 2000 HEATER OPERATING PROCEDURE
The control panel display showing initial start up.
fore the controller has been powered
up, the controller locks up with the
main display alternating between a
"FAN" and "ON" message. This may
be bypassed by depressing and
holding the "FAN BYPASS" switch
(lower right switch). Normal oper-
ating procedure should be to power
up the controller with the fan off.
If multiple heaters are tied to-
gether, and the master detects that
the slave fan is on (the air switch
stuck?), the master will lock up dis-
playing "SLA ERROR". This con-
dition may be bypassed with the
"FAN BYPASS" switch.
All safety and high limit switches are
checked upon power up. If a safety
or limit is open, the control displays it.
The control cannot operate with a
safety switch error, and the fan can-
not turn on with an error condition.
There is no way to bypass an error
condition. It must be fixed. (see errors
on page 20)
The air switch is also checked
on power up. The air switch must
indicate no airflow. This is neces-
sary to check the function of the
air switch. However, if the opera-
tor forgets and turns the fan on be-
Standard electrical safety practices
and codes should be used when
working with a heater. Refer to the
National Electric Code Standard
Handbook by the National Fire Pro-
tection Association. A qualified
electrician should make all wiring
installations.
POWER UP