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IMPORTANT NOTICES
GRS PROGRESSIVE FOOT CONTROL OWNERS
The GRS Progressive Foot Control will operate properly with this engraving system.
Attach the GRS Progressive Foot Control to the “THROTTLE CONNECTION”
push‑to‑connect fi tting on the back of the system.
AIR CONTAMINANTS AND WATER ACCUMULATION
If large amounts of water and contaminants are in the air supply to the system, the
bowl must be drained frequently to prevent water from entering the rotary valve,
hoses, handpiece, etc. Check all fi lters, bowls, hoses, etc., twice a week to prevent
accumulation.
Additionally, the fi lter element must be cleaned and/or replaced frequently. If moisture is
noted in the handpiece or throttle hoses, power off system immediately. Purge air from
system, drain fi lter bowl, and proceed as follows:
• Disassemble and clean handpiece(s). Reassemble.
• Set primary air pressure to 10 psi (0.7 bar). Power on the system to purge moisture
from valves, hoses, etc.
• Locate the drain plug to the internal air reservoir (FIG. 1.R). Use a 3/16" hex wrench
to remove the plug; drain any moisture from reservoir. Replace drain plug.
• Before powering on engraving system, locate source of moisture and correct
problem. An additional fi lter or water trap in the air line may be necessary.
