September 2012 Page 11
PFM Portable Hydraulic Testers PFM6, PFM6BD, and PFM8
The PFM6 and PFM8 testers are equipped with a poppet style loading valve. The PFM6BD testers utilize a spool design loading
valve to accommodate bi-directional flow. The spool design requires more turns to go from total open to total close.
OFF
ON
LOW
EMP
PRESS
PWR
Flo-check
PFM
TM
OPEN LOAD VALVE BEFORE
OPERATING
DO NOT STAND IN FRONT OF
PRESSURE RELIEF DISC VENT
FLASHING LO-BAT?
REPLACE BATTERIES.
INDICATES DISPLAY
OVER RANGE.
U.S. METRIC
AUTO SHUT-OFF 5 MINUTES
WHEN NO FLOW
- H.P., - kW
PRESSURE
LOW - EMP
GPM, l/min - F°, C°
Figure 3: PFM8 Slide and Membrane Switches
Pressure is displayed as follows:
PFM6 the gauge indicates pressure at the inlet port
PFM6BD the gauge indicates pressure at the inlet port dependent on the direction of flow
PFM8
the pressure is displayed on the LCD. A minimum of 200 PSI (14 kg/cm
2
) is required to activate the display. PSI will increment in 10’s (i.e.
200, 210, 220, etc.); kg/cm
2
, bars or MPa will increment in single units (i.e. 141, 142, 143, etc.)
On all models, the battery voltage is affected by cold temperatures. Allow time for the circulating oil to warm the tester before
critical measurements are taken. On the PFM6 and PFM6BD, a LO BAT signal on the display indicates a low battery condition.
On the PFM8, a flashing colon (:) on the display indicates a low battery condition. Replace the batteries with 4 “AA” alkaline
batteries. See Battery Replacement on page 21.
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