Page 159 - Single-line automatic lubrication systems

Control unit

84501

Control units

Description
Technical data
Model 84501 program timer is used to control the lubrication cycle
frequency of air-operated, single-stroke pumps. The timer turns Order number 84501
pump on/off at programmed intervals via a 3-way or 4-way air sole- Function principle control unit
noid valve (not included) installed in the air line to the pump. It is Operating temperature –18 to +54 °C; 0 to +130 °F
Operating voltage 120/230 V AC
capable of retaining memory for three hours during machine shut
Operating voltage frequency 50/60 Hz
down or power failure. Timing is suspended during power interrup- Switch capacity 120 V AC: 5 A
tions. This feature eliminates over-lubrication due to pre-lube when 230 V AC: 1,5 A
machine is frequently started and stopped. Using two programmable Off-time cycle min. 20 sec; max. 24 h
Off-time pumping
min. 10 sec; max. 1 min 24 sec
jumper pins, four options are available with the memory and prelube Prelube on time 40 sec
feature. Protection class NEMA 1
Standards UL, CSA
Dimensions 173 × 210 × 125 mm
7 × 8 × 5 in
Features and benefits Mounting position vertical
• Program timer controls lubication cycle frequency
of air-operated, single-stroke pumps
• Timer turns pump on/off via solenoid air valves
in programmed intervals
• Retains memory for three hours during machine
shut down or power interruption
• Suspended timing during power interruptions eliminates
over-lubrication due to pre-lube when machine is frequently
started and stopped

Applications NOTE
Further technical information, technical drawings,
• Cement industry accessories, spare parts or product function descriptions
• Food and beverage available on SKF.com/lubrication.
• Assembly lines
• Conveyors

159