19
COMPONENT DESCRIPTION
FULL-LOAD
NTS
DATE
D
C
1
3
4
5
A
B
C
D
E
F
5
3
2
1
F
E
B
A
4
2
1201 West US Highway 20, Michigan City IN 46360
1-800-438-6203
SHEET
SULLIVAN-PALATEK
04/17/14
CONTROL SYSTEM
204MM 125-250HP, SP20
Line Pressure
Dry Side
Regulated Air
LEGEND
FIGURE 3-6.
SP20-MPC CONTROL SYSTEM (FULL-LOAD) R00
After the initial start-up, the timer will force the electrical components controlling the low pressure control
to drop out. This will shut off the blow-down circuit, allowing the sump pressure to come up to operating
pressure. During this time, no control air will be flowing to any major components. As the sump pressure
reaches the set point of the minimum pressure valve, air flow to customer’s process will start. The mois
-
ture separator outlet pressure to the customer’s process is monitored and will control the blow-down when
needed. Sump pressure and line pressure are displayed on the control panel to visually monitor the status
of the compressor. Until the customer’s process achieves the set pressure, the compressor will run in full-
load status.
Summary of Contents for SP20
Page 12: ...4 Introduction ...
