69. With ambient temperatures are at or below -9 °C (15 °F), the AUX pumps may not initially generate full pressure. If system pressure does not rise to at least 3500 psi within 30 seconds of selecting the pump to AUTO, select the pump to off, wait 30 seconds and proceed as follows.1. Select the AUX pump to AUTO for 30 seconds, then off for 30 seconds.2. Repeat ___________ or until system pressure indicates at least3500 psi.
for a maximum of 10 cycles