10Tighten the hose clamp located on the plastic tube and the elbow barb end of the Chemical Trap.
11Remove the plastic cap from the inlet end of the Chemical Trap. Taking the clear end of the vacuum hose and another hose clamp attach the vacuum hose to the inlet end of the Chemical Trap and tighten the hose clamp.
12Attach the black end of the vacuum hose to the barb fitting located on the back of the Detector box and tighten the last hose clamp onto it to make this connection.
13Using three or four wraps of Teflon® tape around NPT fitting of the supplied muffler or user supplied exhaust fitting to the pump's "EXHAUST" port. Any exhaust tubing attached to the pump exhaust should be positioned to avoid the accumulation of water from condensation of water vapor.
WARNING | Vent the exhaust from the vacuum pump to a fume hood or other exhaust system to elimi- | |
nate any potential hazard. | ||
|
14Place the vacuum pump where it will be located when the pump is operated, within the length of the power cord to be attached to the female connector on the back of the Detector.
15Make sure that the On/Off switch on the pump is in the on position.
Operation Notes (Welch Pump)
1The pump is designed to start against atmospheric pressure. Therefore, if the pump is turned off inadvertently, it may be necessary to allow the Detector pressure to rise before restarting the pump.
2The only user maintenance required is the periodic replacement of the piston sleeves and seals, e.g., after 8 months of continuous operation. Consult the pump’s manual for further details.
3Although, the pump is not damaged by exposure to ozone, use of the Chemical Trap is highly recommended. Refer to the pump manual and seal replacement kit instructions for more detailed information.
4High line voltage will cause the pump to overheat and trip its thermal fuse.
5When new, or after changing seals, the pump may require a short
Operation and Maintenance Manual | 53 |
