PPC3™ OPERATION AND MAINTENANCE MANUAL
© 2002-2007 DH Instruments, a Fluke Company Page 8
2.3.3 POWER CONNECTION
Check that the PPC3 power switch is OFF.
Connect the supplied power cable to the rear panel power module.
Connect the other end of the power cable to an electrical supply of 85 to 264 VAC, 50/60 Hz.
2.3.4 REMOTE [ENTER/SET P] CONNECTION (FOOTSWITCH
OR OTHER SWITCH)
Connect the optional remote ENTER footswitch, if available or a user supplied switch fitted to
the optional cable (see Section 7.3). Connect the cable to the PPC3 rear panel connection
labeled REMOTE ENTER. Activating the switch is equivalent to pressing the [ENT/SET P]
key on the front panel (see Section 3.1.4).
2.3.5 CONNECTING TO A PRESSURE SUPPLY (SUPPLY
PORT)
Using a pressure connecting hose or tube of appropriate pressure rating, connect the
pressure supply to the SUPPLY port on the rear panel of PPC3. The PPC3 SUPPLY port
connection is 1/8 in. NPT female.
The supply pressure should be equal to the maximum PPC3 control pressure + 10 % (or at
least 70 kPa (10 psi) for a BG15K Q-RPT). Lower gas pressure sources can be used but
should exceed the maximum desired test output pressure by 10 to 20 %.
Never connect a pressure supply greater than 20 % over the maximum control pressure of
the PPC3 model you are using (except models with a BG15K Q-RPT only). Be sure to
connect the pressure supply to the SUPPLY port. Connecting to another port is likely to
damage PPC3.
2.3.6 CONNECTING A VACUUM PUMP (EXHAUST PORT)
For PPC3 to set pressures under atmosphere and/or to reliably set pressure under 20 kPa (3 psi)
gauge (other than zero gauge), a vacuum supply must be connected to the EXHAUST port.
Never connect a pressure supply to or plug the PPC3 EXHAUST port.
To avoid building up pressure on the EXHAUST port or on a vacuum pump connected to
the EXHAUST port, the vacuum source should either be continuously ON or the EXHAUST
port should be bypassed to atmosphere when the vacuum source is OFF. This is because
when a supply pressure is applied to the PPC3 SUPPLY port and the PPC3 is NOT in the
vent ON condition, there may be a constant gas exhaust through the PPC3 EXHAUST port.
To assure optimum pressure control when changing the pressure applied to the EXHAUST
port from vacuum to atmosphere or vice-versa, be sure to change the control reference
setting if the setting is NOT in AUTO mode (see Section 3.5.7.2).
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