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Multi-Temperature Refrigeration System Diagrams 16-6

SLX, SLXe, SLXi SPECTRUM

Zone 1* on Cool, Zone 2** on Heat

Note: SLX Spectrum ETV and SLXe/SLXi Spectrum modes are the same as the SLX Spectrum with the exception of host

only operation, then Modulation control is activated for host zone.

Note: Early generation of SLX Spectrum units (until 04-2012) are fitted with MTV (not ETV). Therefore, please refer to

pages 15-2 and 15-3 for these Host unit diagrams

Z-1 Zone 1 Evaporator* (Host Unit): COOL

1. Liquid Line Solenoid (LLS) – Open

2. Liquid Return Check Valve (LRCV) – Closed

3. Suction Line Check Valve (SLCV) – Open

4. Suction Line Solenoid (SLS) – Open

5. Hot Gas Solenoid (HGS) – Closed

6. Condenser Inlet Solenoid (CIS) – Closed****

7. Condenser Inlet Check Valve (CICV) – Closed

8. Receiver Tank Pressure Solenoid (RTPS) –

Open****

9. Condenser Check Valve (CCV) – Closed

10. Bypass Hand Valve

11. Purge Valve (PV) – Open****

12. Purge Check Valve (PCV) – Open

13. Hot GAs Bypass solenoid (HGBS)

14. Electronic Throttling Valve

Z-2 Zone 2 Evaporator**: HEAT

1C. Zone 2 Liquid Line Solenoid (LLS2) – Open

2C. Zone 2 Liquid Return Check Valve (LRCV2) –

Closed

3C. Zone 2 Suction Line Check Valve (SLCV2) –

Open

4C. Zone 2 Suction Line Solenoid (SLS2) – Open

5C. Zone 2 Hot Gas Solenoid (HGS2) – Closed

Thermo King SPECTRUM SL User Manual

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