The «EMERGENCY STOP» push button cannot be pressed or does not engage.
➤ Do not start the machine.
➤ Have the «EMERGENCY STOP» push button replaced.
10.11.2 Have the actuating pressure of the safety relief valve checked
The machine should shut down if the actuating pressure of the safety relief valve reaches a maxi‐
mum of P
max.
(P
max.
Check in accordance with section: "Check actuating pressure of safety relief valve" in the
separate User Manual for the SIGMA CONTROL SMART controller, chapter “Have safety
functions checked”.
Maximum working pressure: see machine nameplate
Maximum working pressure [psig]
Activating pressure [psig]
125
160
150
232
Tab. 84 Safety relief valve actuating pressure
Material Hearing protection
Eye protection
Risk of hearing damage when air is blown out through the safety valve!
➤ Close all the doors/enclosure.
➤ Wear hearing protection.
Risk of burns due to released cooling oil and compressed air when blowing off the safety
valve!
➤ Wear eye protection.
➤ Have the actuating pressure of the safety relief valve checked.
Result When the "activating pressure" is reached, the safety relief valve actuates (blows off).
When the "activating pressure" is reached, the safety relief valve does not actuate (blow off).
➤ Immediately shut down the machine and cease any further operation.
➤ Request an inspection and/or replacement of the safety relief valve.
10.11.3 Having excessive temperature shut-down function checked
The machine should shut down if the discharge temperature reaches a maximum of T
max.
; T
max.
[°F]
see table 85.
Check in accordance with section: "Check safety shut-down at excessive airend discharge
temperature" in the separate User Manual for the SIGMA CONTROL SMART controller,
chapter “Have safety functions checked”.
10 Maintenance
10.11 Check safety functions
No.: 902366 10 USE
Operator Manual Portable Rotary Screw Compressor
MOBILAIR M55 PE SIGMA CONTROL SMART pV
159
