Carrier 19QA- Manuals

VAPORVALVE PRESSURE GAGE RELIEF -VALVE ASSEMBLY ■ LEVEL GAGE UNIT SIZE A B WEIGHT EMPTY MAXIMUM REFRIGERANT CHARGE ACCESSORY CASTERS lbs kg lbs kg lbs kg 19QA020 4'-9" [1448] 5'-4%" [1648] 495 225 1600 727 34 15 19QA030 7'-3" [2209] 7'-10%” [2410] 546 248 2450 1114 48 22 19QA040 Q'.Q"...

NO. ITEM NO. 1 — Pressure Gage 12 — 2 — Purge Separator Assembly 3 — Refrigerant (Vapor) In 13 — 4 — Tube-in-Tube Condenser 14 — 5 — Filter Drier V i SAE Flare (Hidden) 6 — Refrigerant (Liquid) Out 7 — Oil Separator 8 — Pump 9 — P um p Motor 10 — Heater High-Pressure Cutout Switch (Hidden) 11 — Heat...

L2 H U i H L E V E L S W I T C H MOTOR WIRING SCHEMATIC L l L2 T O G G L ES W I T C H P R E S S U R E S W I T C H - O R N - - W H T ---^ ------- W H T - H E A T E R — — L A M P HEATER WIRING SCHEMATIC NOTE; The 115 and 230 v control wiring are identicai. Fig. 6 — Typical Control Wiring Schematic CON...

OPERATION Evacuation — To minimize refrigerant loss, air must not be allowed to mix with the refrigerant vapor. All spaces that could contain refrigerant (such as chillers, storage tanks, and refrigerant hoses) must be completely evacuated before charging the RMS with refrigerant. To evacuate air fr...

Refrigerant Vapor Transfer A WARNING If the required vacuum level cannot be reached due to the presence of a large leak in the chiller, the vapor recovery process should be stopped. The constant in­ filtration of air into the chiller may contaminate the refrigerant. Refrigerant vapor recovery is req...

DISCHARGE WATER CONNECTIONS Refrigerant Hose Water Hose Direct Coupled Connection Factory-Installed Copper Tubing Fig. 11 — Refrigerant Vapor Transfer/Evacuation Connections TO TRANSFER REFRIGERANT - Open all valves be­ tween the chiller and storage tank. Turn on the water to the tube-in-tube conden...

Purge Separator Assembly — A purge separator assembly is used to remove noncondensable gases that may be mixed with the refrigerant being recovered. See Fig. 4. If vapor is being recovered from a leaking chiller, air will enter the machine. The air will mix with the refrigerant gas and collect in th...

Water Separation — Water is only slightly soluble in refrigerant. See Table 4. If additional water is present, it will float on top of the refrigerant and can be easily re­moved by the RMS unit. Transfer the water contaminated refrigerant to the stor­ age tank using the procedures described in the L...

Table 5 — Vapor Pressure TEMPERATURE CFC-11 CFC-113 HCFC-123 Psi Psi kPa kPa Psi Psi kPa kPa Psi Psi kPa kPa °F °c Gage Absolute Gage Absolute Gage Absolute Gage Absolute Gage Absolute Gage Absolute -20 -28.9 26.9 1.4 -91.1 9.7 29.0 0.4 -98.2 2.8 27.6 1.1 -93.5 7.6 -15 -26.1 26.5 1.7 -89.7 11.7 28.8...

MAINTENANCE Periodic maintenance is necessary to keep all compo­ nents functioning as designed. A maintenance log is rec­ommended to ensure a proper maintenance schedule is followed. Maintaining the Pump — Clean lubricating oil is es­ sential to maintaining the required vacuum capabilities. If the o...

TROUBLESHOOTING SYMPTOM PROBABLE CAUSE REMEDY Unit hums and vibrates excessiveiy. Motor/pump assembly out of alignment. Check alignment and adjust if necessary. Motor/pump assembly holddown bolts are loose. Check hoiddown bolts and tighten as necessary. Pump does not puli a 29 in. Hg vacuum (25 mm H...