Service How To Procedures PCOOL - Replacement - AD0302
Last updated: 10/12/2020

PCOOL - Replacement

AD0302

Applies to machines built from January 1992

Introduction

This procedure tells you how to replace a Programmable Coolant (P-Cool) assembly on a HMC or VMC machine. The procedure shows the replacement on a VMC machine. The steps are similar on a HMC machine.

These instructions apply to kit PN: 93-1475, P-COOL INSTALLATION KIT, VF1-11

Minimum software requirements for a machine with a Classic Haas Control:

  • Older software versions do not allow 34 positions for the pcool. Versions M11.17 through M11.21 only allow 14 positions. While the pcool will function, it will be restricted to 14 positions (14° of motion). Software upgrade to M11.22 or higher is required for these machines. No other restrictions on other versions of software.

Machines with a Classic Haas Control Hardware requirements for first time installation:

  • 25-7850  BRACKET PCOOL VF1-11/40TPCOOL
  • 25-8164    COVER CABLE PCOOL VF1-11 250/PLT
  • 52-0026A    HOSE  STRAIGHT SWIVEL PCOOL NPT 3/8M

For these machines:

  • DT, MM, SMM, EC, ES, GR, VR

You must order an M12 cable [1] that has a strain-relief fitting [2]. Use P/N 32-0356.

The cable included in the kit does not have a strain relief.

Electrical Schematic

Replacement

1

Disconnect the P-Cool hose from the valve [1] attached to the P-Cool manifold.

Disconnect the M12 cable [2] from the connector [3] on the used P-Cool assembly.

If the M12 cable has a strain relief, remove the cable bracket [4] from the spindle head cover.

Remove the (2) screws [5] that hold the used P-Cool assembly. Remove the used P-Cool assembly.

Install the new P-COOL ASSEMBLY [A]. Use the same (2) screws [5]. Connect the hose from the new P-Cool assembly to the valve [1] attached to the P-Cool manifold..

2

Remove the spindle head cover.

Connect the new M12 CABLE [B] to the receptacle on the P-COOL ASSEMBLY [A].

Put the cable up the side of the spindle head casting. Make sure the cable goes into the opening [3] at the bottom of the spindle.

Disconnect the used M12 cable [1] from the connector bracket [2].

 Note: On HMC machines, the connector bracket is near the back of the Y-Axis column. Remove the Y-Axis way covers for better access to the connector bracket.

Connect the new M12 CABLE [B] to the connector bracket.

3

Install the spindle head cover. Do not let the M12 CABLE [B] get caught between the cover and other objects.

If the M12 cable has a strain relief, put the cable and strain relief through the bracket [1]. Attach the bracket to the spindle head cover.

To replace the standard nozzle [2] with the long NOZZLE [C], do these steps:

  • Remove the fitting and nozzle [3] from the P-Cool assembly.
  • Install the long NOZZLE [C] into the FITTING [D].
  • Install the fitting into the P-Cool assembly.

Verification

1

Turn on the machine.

For a Machine with a Classic Haas Control First Time Installation:

  • Go into DEBUG mode and set parameter 206 SPIGOT POSITIONS 34.

For a Machine with a Next Generation Control First Time Installation:

Test the option:

Push [CLNT UP]. Push [CLNT DOWN].

The P-Cool nozzle moves up and down.

Make sure the P-Cool system operates correctly.

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