DUPLEX PANEL OPERATION

FEATURES

The SPM duplex models consist of two pump/motor assemblies

with a pre-piped, common discharge manifold. One

pump/motor unit operates continuously, with the second providing

backup service if the main pump fails. Either automatic

(SPM-DA models) or manual (SPM-DM models) controls

are available.

The duplex automatic series are designed specifically for

buildings where a constant supply of oil must be assured ...

hospitals, apartment buildings, schools and other commercial/

industrial buildings.

The DA Series is equipped with a pressure sensing device

which detects a loss in pressure of the primary pump. If the

standby pump is brought into service, an alarm sounds which

indicates a malfunction in the primary pump.

The electric control circuit on the duplex automatic pump set

is equipped with a lead-lag switch to permit manual alternation

of pump to provide even wear on each pump.

The manually operated duplex pump sets offer the same protection

as an automatic except the standby pump must be

turned on manually which requires that maintenance personnel

always be available.