5.21 ELECTRICAL SCHEMATIC NCIM10 & NCIM18
Air Dryer Controller
EVB
N
COM
B
D
Sonde
EVD
PR
DMC5
PE
Vc
M
M
PROBE
PO
WE
R
Pui
ssa
nce
Legend:
IG
: Rocker On/Off switch
VC
: Condenser fan motor
K
: Refrigeration compressor
PR
: DMC5 probe
KR
: Compressor start-up relay
EVB
: Hot gas by-pass solenoid valve
KM
: Compressor electric motor
EVD
: Condensate drain solenoid valve
KT
: Compressor thermal protection
6.1 MAINTENANCE SCHEDULE
Only qualified personnel should perform maintenance operations.
Prior to performing any maintenance or service, be sure that:
•
Ensure that the power is off and the unit is at atmospheric pressure.
•
Main power circuit breaker is in the off position per lock out/tag out procedures.
•
Ensure that maintenance personnel have read and understand the safety and operations instructions in
this manual.
High temperature conditions exist during operation of system. Avoid contact until system or component
has dissipated heat.
DAILY
•
Verify that the DewPoint displayed on the DMC11 is correct.
•
Check the proper operation of the condensate drain system.
•
Inspect the condenser for cleanliness.
EVERY 200 HOURS OR MONTHLY
•
Blow entire unit out with compressed air (Max. 30 psig - 2 barg)
•
Blow condenser coils out with compressed air.
•
Close the manual condensate drain valve, remove the mechanical filter and clean it with compressed air
and a brush. Reinstall the filter, make sure it is tight, and open the manual valve.
•
Verify operation of the machine.
EVERY 1000 HOURS OR YEARLY
•
Tighten all electrical connections. Look for broken, cracked or bare wires.
•
Inspect refrigeration circuit for signs of oil and refrigerant leakage.
•
Measure and record amperage. Verify that readings are within acceptable parameters as listed in
specification table.
•
Inspect condensate drain flexible hoses, and replace if necessary.
•
Verify operation of the machine
.