FORM 195.26-NM3
YORK INTERNATIONAL
73
3.
25 ft. Twisted Pair Shielded Cable (minimum 3
conductor), #18 AWG Stranded, 300V min. insu-
lation.
4.
(1 ea.) 25-pin Cannon connector and shell. Con-
nector: Cannon P/N DB-25P or equivalent. Shell:
Cannon P/N DB-C2-J9.
Assembly and Wiring
All components should be assembled and wired as fol-
lows in Fig. 31. Strip the outside insulation back sev-
eral inches and individual wires about 3/8" to connect
the cable at the Micro Logic Board. Connect the shield
of the cable as shown on the Micro Logic Board. Do
not connect at the printer end of the cable.
Printer Configuration
2 Switches on the printer must be properly configured.
Remove the paper roll to access these switches. Place
the switches in the following position:
SW. 1 OFF
SW. 2 ON
Obtaining a Print-out
A print-out of current operating data may be obtained
by pressing the OPER DATA key. A snap-shot will be
taken by the micro of current operating conditions.
These conditions will be stored in memory until they
can be transmitted to the printer and printed. A sample
print-out is shown in Fig. 19 on page 50.
A print-out of the fault shut-down history may be ob-
tained by pressing the HISTORY key. A print-out show-
ing the last 3 faults with all system conditions at the
time of the fault will be transmitted. A sample print-out
is shown in Fig. 20 on page 51.
An automatic print-out will be sent to the printer when-
ever the chiller shuts down on a fault, regardless of
whether the fault causes a system or the entire chiller
to lockout or whether restart is permitted. This is the
same print-out that is obtained when the OPER DATA
Key is pressed; however, it will be a snap-shot of sys-
tem operating conditions at the instant that the fault
occured. Additionally, the Status indication that is noted
in the print-out will note the specific fault that occured.
Using Other Printers
Control codes vary from printer to printer. This will re-
sult in unusual formatting of printed data from many
printers. In addition, “handshaking” lines and “handshak-
ing” sequence will differ between printers. This makes
the equipment susceptable to operation problems or
mis-wiring which may cause damage to the printer or
the Microprocessor Board. YORK assumes no respon-
sibility for assistance or damage in the use of non-
specified printers.
Warranty
YORK assumes no warranty responsibility in the use
of the printer. This includes damages to the printer and
the Microprocessor Board or chiller operation prob-
lems which may result.
FIG. 31 – ASSEMBLY AND WIRING
LD00583
