Johnson Controls P45 Serie Manual De Instrucciones

PSC9705
I
ntroduction
The series P45 controls are designed to give
protection against low lube-oil pressure on
pressure lubricated refrigeration compressors.
The controls measure the pressure differential
(net oil pressure) between the pressure
generated by the oil pump and the refrigerant
pressure at the crankcase. A built-in time delay
switch allows pressure build-up during start and
avoids nuisance shut-down on pressure drops
of short duration during the running cycle.
Several million in use today.
Heavy duty pressure
elements.
Key specifications
match/exceed other brands.
Accurate 0.2 bar switch
differential standard.
Adjustable or fixed setpoint.
Safelight output standard.
Trip-free manual reset.
High current rated output.
Ambient compensated timing.
© 1997 Johnson Controls Inc.
Order No. PD-P45-E
European Refrigeration Controls Catalogue
Series P45
Lube-oil Protection Controls
With Built-in Time Delay Switch
Feature and Benefits
Proven to be a reliable product.
Long-life control.
Withstands higher overrun pressure of 29
bar.
Easily replaces existing lube-oil controls.
Covers more applications.
One model can be used on several
applications.
More customer flexibility.
Better compressor protection.
Can be used in more applications.
Stable delay time.
Catalog Section 6
Product Bulletin P45
Issue 9701
P45 Style 5
P45 Style 13
Catalogue Section 6