ISSUE PATE AMENDMENTS 1 [02/12/75] ORIGINAL 2 06/06/16) ON/OFF / PURGE SWITCH CORRECTED WDA A UNIT WILL CONTINUE TO RUN WHILST PURGING PUMP LINE H & & ON/OFF le 5 SWITCH PURGE COIL SENSOR H WATER PUMP ip! se Te COMPRESSOR OH.P FAN i TH / T12 MST SAFETY SWITCH lm .