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569000338
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January 23, 2002
Revised: October 9, 2003
IMI CORNELIUS INC g One Cornelius Place g Anoka, MN 55303-6234
Telephone (800) 238-3600 Facsimile (800) 535–4231
INSTALLATION INSTRUCTIONS FOR
PRESSURE SWITCH PCL KIT (569000689)
Table 1. Loose-Shipped Parts
Item
No. Part No. Name Qty.
1 560002361 Board Circ Prod Delivery 2
2 560004158 Chip Micro EPROM Main 1
3 560002360 Board Circ Oper Interface 1
4 560006424 Switch Press Syr 30-37 PSI 2
5 560005312 Fitg T 7/16-20 x 1/8-FPT 2
6 560002318 Fitg Push PI4512F4S .375 x .25 4
7 560006985 Harn Adaptor Press Switch 2
8 560002388 Tube Prod .250 I.D. x 22-1/2” 1
9 560002389 Tube Prod .250 I.D. x 20-1/2” 1
10 560002339 Clip Flow Bend .375 O.D. Tube 2
11 4417 Clip Lock .375 O.D. Push-in Fitg 4
12 690945000 Tie Cable 2
1. Obtain wakeup time, sleep time, defrost times, and viscosity settings from current setup.
2. Disconnect power (unit may have to be pulled from wall to access electrical outlet).
3. Shut off syrup supply by shutting down CO
2
. Bleed CO
2
from inlets to BIB pumps.
4. Remove left side, front access and rear panel.
5. Remove No. 1 cylinder syrup inlet line and No. 1 syrup flow sensor assembly (leftmost if facing unit).
6. Install new syrup inlet line (2 flavor OC unit), or connect existing line with tubing elbow and cable tie (2 and
4 flavor standing units) to pressure switch assembly (see Figure 1). Assemble locks onto pressure switch
assembly and reconnect electrical harness paying close attention to maintaining wiring integrity. Switch is
supplied with adapter harness to retrofit existing wiring (wires to be attached to “C” common and “NC” nor-
mally closed. Note: some parts will be left over.
7. Repeat steps 5 and 6 for No. 2, 3 and 4 syrup inlet lines and syrup flow sensor assemblies.
8. Remove existing main control board EPROM chip using an EPROM extraction tool. Install EPROM taking
great care not to misalign pins or cause damage to chip. Note: wearing ground strap is stronly recom-
mended to protect board from electrostatic discharge. Take care to put each connector back in its
proper location.
9. Remove existing No. 1 cylinder product delivery board. Install new product delivery board (using ground
strap). Take care to put each connector back in its proper location.
10. Repeat step 9 for product delivery boards No. 2, 3 and 4.