Manitowoc SR1801W Especificaciones descargar pdf (Pagina 156)

156 Part Number 80-1479-3 7/10

PTCR

The PTCR allows current to flow through the start

winding at compressor startup. Current flow heats the

ceramic discs in the PTCR. The electrical resistance

increases with temperature and stops all except a

trickle of current flow through the start winding. The

small flow of current keeps the PTCR hot (260°F/

127°C) and the start winding out of the circuit.

The PTCR must be cooled before attempting to start

the compressor, otherwise the PTCR will heat up too

quickly and stop current flow through the start winding

before the compressor motor reaches full speed..

NOTE: If a PTCR is dropped internal damage can

occur to the ceramic PTCR discs. The ceramic disc

can chip and cause arcing which leads to PTCR

failure. Since there is no way to open the PTCR in

order to determine if the ceramic disc is chipped or

not, it must be discarded when dropped.

Warning

Disconnect e lectrical p ower to the en tire ice

machine at the bu ilding el ectrical disco nnect box

before proceeding.

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Manitowoc SR1801W Especificaciones Pagina 156