750-297
Profire E/LNE Series Manual
5-7
Maintenance
5.12.4 — Oil Level Sight Gauge
The oil level sight gauge can be cleaned by removing it from the air-oil tank and soaking it in a detergent solution. If
cleaning the gauge proves unsatisfactory, replace it.
5.12.5 — Compressor Oil Filter (Lube Oil Strainer)
The lube oil strainer prevents foreign materials from entering the compressor. It is important to replace the compressor
oil filter at the same interval as changing the lubricating oil (every 2,000 hours of operation).
5.12.6 — Compressor Lubrication
A separate compressor has a lubricating oil fill pipe in the air inlet to the compressor. Lubricating oil must be visible in
the gauge glass at all times. There is no specific level required as long as oil is visible. Do not operate if oil is not
visible. Oil with proper viscosity must be used. SAE 30 non-detergent is recommended in a normal operating
environment and SAE 10 non-detergent oil for a 32º F and below environment. Name brands known to perform
satisfactorily include Havoline (Texaco), Mobil Oil (Mobil), Shell X100 and Permalube (American).
When adding oil: Remove the cover from the fill pipe and add oil through the conical strainer in the pipe with the unit
running. The oil and its container should be clean. Although there is a strainer in the lube oil line, its purpose is to
remove any unwanted materials rather than to act as a filter for unclean oil.
5.13 — Gas System
5.13.1 — Motorized Main Gas Valves
Should the valve fail to operate, check for voltage at the valve. Make certain that the main shutoff cock is closed prior
to testing. The actuator is not field repairable nor should it be disassembled. Replace the actuator if the valve fails to
operate. After replacement, cycle the valve with the fuel shutoff to determine that it opens and closes. If the valve has a
visual indicator, observe its position for correct operation.
5.13.2 — Solenoid Valves
A slight hum from the solenoid is normal when the coil is energized. Should the valve fail to operate, check that there is
voltage at the valve coil. If there is no voltage at coil, check for loose wiring connections. If there is proper voltage at
the valve coil and the valve still fails to open, replace the coil. Refer to manufacturer's bulletin for correct procedure in
coil replacement.
Oil must NEVER be added unless the pump is in operation and the stainer screen is in place. Failure to follow these
instructions can cause damage to the equipment.
Disconnect all power before servicing the valves.
!
Caution
!
Caution