Carrier 23XL Spezifikationen PDF herunterladen (Seite 67)

Hard scale may require chemical treatment for its pre-

vention or removal. Consult a water treatment specialist

for proper treatment.

Water Leaks — Water is indicated during machine op-

eration by the refrigerant moisture indicator on the refrig-

erant motor cooling line. See Fig. 11 and 12. Water leaks

should be repaired immediately.

Machine must be dehydrated after repair of water leaks.

See Machine Dehydration section, page 48.

Water Treatment — Untreated or improperly treated wa-

ter may result in corrosion, scaling, erosion, or algae. The

services of a qualiﬁed water treatment specialist should be

obtained to develop and monitor a treatment program.

Water must be within design ﬂow limits, clean, and treated

to ensure proper machine performance and to reduce the

potential of tubing damage due to corrosion, scaling, ero-

sion, and algae. Carrier assumes no responsibility for

chiller damage resulting from untreated or improperly

treated water.

Inspect the Starting Equipment — Before work-

ing on any starter, shut off the machine, and open all dis-

connects supplying power to the starter.

The disconnect on the starter front panel does not de-

energize all internal circuits. Open all internal and re-

mote disconnects before servicing the starter.

Never open isolating knife switches while equipment is

operating. Electrical arcing can cause serious injury.

Inspect starter contact surfaces for wear or pitting on

mechanical-type starters. Do not sandpaper or ﬁle silver-

plated contacts. Follow the starter manufacturer’s instruc-

tions for contact replacement, lubrication, spare parts order-

ing, and other maintenance requirements.

Periodically vacuum or blow off accumulated debris on

the internal parts with a high-velocity, low-pressure blower.

Power connections on newly installed starters may relax

and loosen after a month of operation. Turn power off and

retighten. Recheck annually thereafter.

Loose power connections can cause voltage spikes, over-

heating, malfunctioning, or failures.

Check Pressure Transducers — Once a year, the

pressure transducers should be checked against a pressure

gage reading. Check all three transducers: oil pressure, dis-

charge pressure, cooler pressure.

Note the appropriate pressure reading on the Status01 table

on the LID. Attach an accurate refrigeration gage to the cor-

responding pressure ﬁtting. Compare the two readings. If there

is a difference in readings, the transducer can be calibrated

as described in the Troubleshooting Guide section.

Optional Pumpout System Maintenance —

For compressor maintenance details, refer to the 06D, 07D

Installation, Start-Up, and Service Instructions.

OPTIONAL PUMPOUT COMPRESSOR OIL CHARGE —

Use oil conforming to Carrier speciﬁcations for reciprocat-

ing compressor usage. Oil requirements are as follows:

• HCFC-22 and HFC-134a

ISO Viscosity ................................68

Viscosity SSU 100 F (38 C)....................300

Carrier Part Number ..................PP23BZ-103

The total oil charge, 4.5 pints (2.6 L), consists of

3.5 pints (2.0 L) for the compressor and one additional pint

(0.6 L) for the oil separator.

Oil should be visible in one of the compressor sight glasses

during operation and at shutdown. Always check the oil level

before operating the compressor. Before adding or changing

oil, relieve the refrigerant pressure as follows:

1. Attach a pressure gage to the gage port of either com-

pressor service valve.

2. Close the suction service valve and open the discharge

line to the storage tank or the machine.

3. Operate the compressor until the crankcase pressure drops

to 2 psig (13 kPa).

4. Stop the compressor and isolate the system by closing

the discharge service valve.

5. Slowly remove the oil return line connection (Fig. 42).

Add oil as required.

6. Replace the connection and reopen the compressor serv-

ice valves.

OPTIONAL PUMPOUT SAFETY CONTROL SETTINGS

(Fig. 43) — The optional pumpout system high-pressure switch

should open at 220 ± 5 psig (1517 ± 34 kPa) and should

reset automatically on pressure drop to 190 psig

(1310 kPa) for HCFC-22 machines. For machines using

HFC-134a, the switch opens at 161 psig (1110 kPa) and closes

at 130 psig (896 kPa). Check the switch setting by operating

the pumpout compressor and slowly throttling the pumpout

condenser water.

Fig. 43 — Optional Pumpout System Controls

1 2 ... 62 63 64 65 66 67 68 69 70 71 72 ... 103 104

Kommentare zu diesen Handbüchern

Keine Kommentare

Carrier 23XL Spezifikationen Seite 67

Kommentare zu diesen Handbüchern

Verwandte Produkte und Handbücher für Nein Carrier 23XL