User Manual

Sealer Sales Page 32
ST-1808-28 Tunnel Service Manual
TROUBLESHOOTING—NO HEAT
NO HEAT (continued)
(a) Check for 220 volt on wires 8 and 9 on CR2 with CR2
contactor pulled in under set temperature. If voltage is
present on CR2 contactor on wires 8 and 9, check the
Heat Bank for broken lugs or wire inside the Heater Bank.
If leads and jumper wires on Heater Bank are not broken
or burned, then replace the Heater Bank.
(b) Check Heater Bank for replacement. Make sure no lugs
on the Heater Bank have been broken.
Wires 2 & 3
CR1