Heatcraft Refrigeration Products PRO3 manual Service Information, Connections, Maintenance, XR40CX

PRO3 Side Mount Packaged Refrigeration System

Connections

XR40CX

The X-REP output excludes the TTL output. It’s present in the following codes: XR40CX- xx2xx, XR40CX –xx3xx; XR40CX –xx6xx; XR40CX –xx7xx;

The digital input configurable as third probe is present in the following codes: XR40CX- xx4xx, XR40CX –xx5xx; XR40CX –xx6xx; XR40CX –xx7xx;

8A compressor

9 1 0 1 1 1 

8(3)A250V 8(3)A250V

1  3 4 5 6 7 8

	N.C.		Hot Key/IV Probe
Def		Comp	TTL or X-REPoutput

Line

20A compressor

9 1 0 1 1 1 

8(3)A250V 20(8)A250V

1  3 4 5 6 7 8

	N.C.		Hot Key/IV probe
Def		Comp	TTL or X-REP output

Line

XR60CX

The X-REP output excludes the TTL output. It’s present in the following codes: XR60CX- xx2xx, XR60CX –xx3xx; XR60CX –xx6xx; XR60CX –xx7xx;

The digital input configurable as third probe is present in the following codes: XR60CX- xx4xx, XR60CX –xx5xx; XR60CX –xx6xx; XR60CX –xx7xx;

8A or 16A comp. relay - 230 VAC

									Evap.	Room
				8(3)A				9	10 11 12
Max	8(3)A250V~
16A
	1	2	3	4	5	6	6	7
			N.C.					Hot Key/IV probe/
		Def		Fan Comp				TTL or X-REP output
Line

NOTE: The compressor relay is 8(3)A or 16(6)A according to the model.

20A comp. relay - 230 VAC

Service Information

All PRO3 packaged refrigeration system units are designed for maximum durability, reliability and simplicity. The PRO3 packaged refrigeration system comes to you ready for operation, fully charged and with all controls preset at the factory. The following information is provided as an aid in the event that service is required.

Maintenance

The evaporator section of a PRO3 packaged refrigeration system should be checked at least once for proper defrosting because the amount and pattern of frosting can vary greatly.

The frost build-up is dependent on the temperature of the room, the type of product being stored, how often new product is brought into the room and percentage of time the door to the room is open. It may be necessary to periodically change the number of defrost cycles or adjust the duration of defrost.

System Standard Maintenance Guidelines

After first year of operation and under normal usage, maintenance should cover the following items at least once every six months:

1.Check and tighten ALL electrical connections.

2.Check all wiring and insulators.

3.Check contactors for proper operation and for worn contact points.

4.Check all fan motors. Tighten motor mount bolts/ nuts and tighten fan set screws.

5.Clean the condenser coil surface.

6.Check the operation of the control system. Make certain all safety controls are operating properly.

7.Check all defrost controls for proper function.

8.Clean the evaporator coil surface.

9.Clean the drain pan and check the drain pan and drain line for proper drainage.

CAUTION: Unit is critically charged, care must be taken not to reduce the system refrigerant charge while taking pressure readings. Technician must compensate for any refrigerant that might escape the unit into the gauge tubing.

Evap.

Room

Max		20(8)A250V~					9	10 11 12
	5(1)A				8(3)A250V~
20A
1	2	3	4	5	6	7	8

			Hot Key/IV probe
Line	Fan Comp	Def	N.C.TTL or. X-REP output

PRO3 Side Mount Packaged Refrigeration System Installation and Operations Manual, May 2008 13