User manual

Chapter 5: Monitoring and maintaining your SEC-HD Phason
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Power contactors
Phason’s 240-volt power contactors are heavy-duty relays that increase the load handling capability
of control relays. Power contactors are ideal for secondary ventilation fans and electric heaters.
 Power contactor relay (PC-240): includes power contactor relay and mounting hardware for easy
mounting in an enclosure.
 Power contactor kit (122-1): includes power contactor relay, on-off-
auto switch and label, snubber filter (reduces electrical noise), and
mounting hardware for easy mounting in an enclosure.
 Power contactor unit (129-0): includes two power contactor
relays, two on-off-auto switches, and two snubber filters,
mounted in a large enclosure. The enclosure has room for two
additional contactor relays or kits.
Temperature probes and extension cable
Temperature probes monitor temperatures ranging from –49 to 122°F (-45 to 50°C). The probes are
available in 1, 6, 30, 75, or 150-foot cable lengths and can extended up to 500 feet using extension
cable. Extension cable is available in 500-foot lengths.
Features
 Easy installation
 Rugged and durable design
 Weather and UV-resistant cable
 Limited warranty (90 days)