Barranca Diamond GP-6 Cabmaker - Manual (Page 14)

14
PUMP SET-UP (continued)
Keep the water hose away from the electric motor and belt guard to prevent damage from moving
parts and electric shock hazard. The pump should always be used with clear, clean water so as to
avoid grit/abrasive material, mud or rock fragments from scratching the gemstones during polishing or
clogging the pump valves. For optimal water flow, adjust both the pump and the brass intake valve to
their fully open positions. Should less water be desired, turn the brass lever on the inlet valve to restrict
flow to the hood (Fig 12).
NEEDLE VALVES
The three stainless needle valves (Fig 14) are for fine control of water to each of the three grinding
and polishing stations. For best results, close the valves to the stations not in use. To shut off flow to
a needle valve, simply turn the grey ribbed knob clockwise until it closes to a firm stop (do not over-
tighten). To open maximum flow to a needle valve, simply turn the grey ribbed knob counterclockwise
until the valve stops. It may take up to 30 seconds for water flow rate to change to a specific station.
Fig 14 - The three stainless needle
valves
Fig 15 - Drain with hose installed
DRAIN VALVES
A length of 3/8" ID tubing is provided with the GP-6 Cabmaker for drainage of excess water from the
front base of the reservoir where a drain is located at the base of the reservoir (Fig 15).
To drain off the excess build-up of cooling water on the diamond wheels and expandable drum belts,
connect length of 3/8" ID clear tubing to the drain and route it into a 5 gallon collection bucket or drain
for dirty water.
Do not recycle dirty water from the drain valves into a collection bucket for pumping back up to the
intake valve on the rear of the hood as the contaminants (rock grit, mud, slurry and abrasive particles)
will likely scratch the gemstone material being worked and possibly clog the stainless steel water con-
trol valves or submersible pump.
GP-6 CABMAKER OPERATION AND ADJUSTMENT