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T -309
Safety-3
CAUTION
When Pre-Trip key is pressed, economy, dehumidification and bulb mode will be deactivated. At the
completion of Pre-Trip activity, economy, dehumidification and bulb mode must be reactivated.
CAUTION
When a failure occurs during automatic testing the u nit will su spend operation awaiting operator in-
tervention.
CAUTION
When Pre--Trip test Auto 2 runs to completion without being interrupted, the unit will terminate pre-
trip and display “Auto 2” “end.” The unit will suspend operation until the userdepresses the ENTER
key!
CAUTION
To prevent trapping liquid refrigerant in the manifold gauge set b e sure set is brought to suction pres-
sure before disconnecting.
CAUTION
The scroll compressor achieves low suction pressure very quickly. Do not use the compressor to evacu-
ate the system below zero psig. Never operate the compressor with the suction or discharge service
valves closed (frontseated). Internal damage will result from operating the compressor in a deep vacu-
um.
CAUTION
Use only Carrier Transicold app roved Polyol Ester Oil (POE) -- Mobil ST32 compressor oil with
R-134a. Buy in quantities ofone quartor smaller.When using this hygroscopic oil, immediatelyreseal.
Do not leave container of oil open or contamination will occur.
CAUTION
Take necessary steps (place plywood over coil or use sling on motor) to prevent motor from falling into
condenser coil.
CAUTION
DO NOT disassemble piston from NEW suction modulating valve powerhead assembly. Doing so may
result in damage to piston.
CAUTION
The unit must be OFF whenever a programming card is inserted or removed fr om the controller pro-
gramming port.
CAUTION
Do not allow moistur e to enter wire splice are a as this may affect the sensor resistance.