Helmer Scientific i.Series
®
and Horizon Series
™
Refrigerator - Pass-Thru
Service and Maintenance Manual
360429/A
36
8 Schematics
8.1 iBR and iPR Models; 226 and 458 Configurations
THESE DRAWINGS AND SPECIFICATIONS ARE THE SOLE PROPERTY OF HELMER INC. AND SHALL NOT BE REPRODUCED OR
USED AS THE BASIS FOR MANUFACTURE OR SALES OF APPARATUS WITHOUT THE APPROVAL OF HELMER INC.
Condensate
Heater
(F)
POWER
CORD
MAIN POWER
115V~ (±10%) 60 Hz
230V~ (±10%) 50 Hz
230V~ (±10%) 60 Hz
(A)
L2 IN
GND
L2
OUT
L1 IN
L1
OUT
MAIN
POWER
SWITCH
CIRCUIT
BREAKERS
(D)
(C)
GND
Power Entry
/ RFI Filter
(B)
6 5 4
2 1
3
GROUND
NEUTRAL (L2)
LINE (L1)
i.C3 Power PCBA
COMPRESSOR INVERTER
i.C3 Power PCBA
TERMINAL
STRIP
(E)
From i.C3, J44, Pin 1
6 5 4
2 1
3
6 5 4
2 1
3
i.C3 Power PCBA
To i.C3, J18, Pin 1
LIGHTING POWER SUPPLY
LIGHTING POWER SUPPLY
CONDENSER FAN MOTOR
UNIT COOLER
(G)
58 Model - 3 Motors
26 Model - 2 Motors
UNIT COOLER FANS
(H)
COMPRESSOR INVERTER
COMPRESSOR INVERTER
i.Series