Carrier 30HS Series - User Manual

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SAFETY CONSIDERATIONS

Installation, start-up and servicing of this equip-

ment can be hazardous due to system pressures,

electrical components and equipment location

(roofs, elevated structures, etc.).

Only trained, qualifal installers and service;,-

mechanics should install, start-up and service ,thif

equipment.

When working on the equipment, observe pre-

cautions in the literature, tags, stickers and labels

attached to the equipment and :to any other safety

precautions 'that apply.

•

Follow all safety codes.

•

Wear safety glasses and work gloves.

Carrier Parkway !

yracuse, N.Y. 13221

-Reciprocating

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uid Chillers

For Model D Univ

-. All 208/230 Volt Units Have EXte

All Units Have Suction-Cutoff Unloading SysteM

S070-160

oltage Compressor Motors

Floor must be strong engh,to support oper-

ating weight (see Table 1). If necessary, add sup-

mrting structure (steel beams or reinforced concrete

to floor to transfer weight to nearest beams.

Figure 1 shows location of 6 mounting holes.

•

Each point supports approximately 1/ 6 of the

operating weight.

Do not remove unit from skid until it is in final

location. Rig from the 2-in. diam holes in the cooler

end flanges. Lower carefully onto floor or rollers.

Push or pull only on the skid,

not the unit.

If the

unit is moved on rollers, use a minimum of 3,

evenly spaced.

Areas where corners will be located must be level

*before unit is placed. Level unit with spirit level on

frame channels. Bolt to floor (recommended for

basement or ground floor installations that transmit

vibration to ground without affecting building

structure).

All compressors have mufflers and are attached

rigidly on top of rails mounted on spring vibration _

isolators. Remove rail mounting bolts so rails float_

freely on springs.

If bolts are not removed, they

may retighten from vibration during operation.

Interconnecting piping must be flexible enough

to prevent vibration transmission. If vibration still

occurs, use isolators on unit. If installation is on

upper

floor where vibration cannot be transmitted

to the ground, use field-purchased isolator springs

under each unit mounting hole.

•

Use care in handling, rigging and setting bulky

equipment.

INSTALLATION

LOCATION

Do not store -u s in an area exposed to weather

because of sensitive control mechanisms and elec-

trical ileviCes. Loate unit 'inders.

See Fig. 1 for door' clearance. Allow following

▪

clearances for service access.

Front



3 to 4 ft

Rear



2 ft

Ends



tube removal at one (either) end,

see Fig. 1; 2 ft at opposite end.

Carrier Corporation 1981

CONDENSER

Run water supply lines as short as possible. Size

lines according to head pressure available (not

necessarily connection size), especially on cooling

tower applications. See Carrier System Design

Manual, Part 3, Piping Design:

For installations requiring a water regulating

valve, a separate valve is required (not supplied by

Carrier) for each.circuit. Water bypass valves must

be installed on cooling tower applications where

low outdoor ambients affect head pressure.

The 30HS units using air-cooled or evaporative

condensers should have adequate means for head

pressure control' when operating below 60 F out-

door ambient.

Accessory water manifold packages are available

to manifold 2 condensers on 30HR070-140 units.

Connections are shown in Fig. 1. Each package

Form 30HR.HS-22S1

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Summary

Safety Considerations and General Precautions

General Safety Precautions

Covers hazards, qualified personnel, literature adherence, personal safety, and equipment handling.

Installation Procedures

Location and Clearances

Details site requirements, storage, physical space, and leveling for proper unit placement.

Condenser Setup

Discusses water supply lines, regulating valves, and head pressure control for condenser operation.

Start-Up and Service Procedures

Initial Checks and Electrical

Outlines pre-start checks, electrical wiring requirements, and control circuit connections.

Refrigerant Charging

Provides detailed procedures for filling the system with the correct amount of refrigerant.

Start-Up Procedure

Guides users through the steps to safely initiate unit operation after charging and checks.

Oil Management

Explains how to check, add, or remove compressor oil to maintain the correct level.

Component Protection Systems

Details operation of crankcase heaters, thermal, oil pressure, and safety thermostats.

Pressure Switches and Capacity Control

Covers settings for pressure switches and the operation of capacity control mechanisms.

Sequence of Operation

Describes the unit's operational flow, compressor staging, and loading/unloading logic.

Stoppage and Restart Procedures

Explains common causes for unit stoppage and the correct procedures for restarting.