CAMCORP HVP with Roots Blower - Manual (Page 54)

7 For your nearest ROOTS office contact information, please consult the last page of this document.
Technical Supplement for 32, 33, 36, 42, 45, 47, 53, 56, 59,
65, 68, 615 Universal RAI-G blowers
ROOTS Universal RAI-G rotary positive gas blowers are a
design extension of the basic Universal RAI blower model.
URAI-G blower uses (4) mechanical seals in place of the
standard inboard lip seals to minimize gas leakage into the
atmosphere. The seal vent chambers are plugged. These
units are intended for gases which are compatible with cast
iron case material, steel shafts, 300/400 series stainless steel
and carbon seal components, viton o-rings and the oil/grease
lubricants. If there are any questions regarding application or
operation of this gas blower, please contact factory.
Precaution: URAI-G blowers: Care must be used when
opening the head plate seal vent chamber plugs (43) as
some gas will escape–if it is a pressure system, or the
atmospheric air will leak in-if the system is under vacuum.
There is a possibility of some gas leakage through the
mechanical seals. This leakage on the gear end will escape
through the gear box vent, and on the drive end, through the
grease release fittings. If the gas leakage is undesirable,
each seal chamber must be purged with an inert gas
through one purge gas hole (43) per seal . There are two
plugged purge gas holes(1/8 NPT) provided per seal. The
Technical Supplement for URAI ® Gas Blowers
purge gas pressure must be maintained one psi above the
discharge gas pressure. Also, there exists a possibility of
gear end oil and drive end grease leakage into the gas
stream.
The lubricants selected must be compatible with the gas.
URAI GAS Blower Oil and Grease Specifications
The specified oil should be ROOTS synthetic P/N 813-106- of
the proper viscosity.
When servicing drive end bearings of a Gas blower, use the
specified NLGI #2 premium grade aluminum complex*
grease, ROOTS P/N T20019001, with 300°F (149°C) service
temperature and moisture resistance and good mechanical
stability.
*ROOTS Synthetic Oil & Grease is superior in performance to
petroleum based products. It has high oxidation stability, excellent corrosion
protection, extremely high film strength and low coefficient of friction. Typical
oil change intervals are increased 2-3 times over petroleum based lubricants.
Also, ROOTS Synthetic Oil is 100% compatible with petroleum based oils.
Simply drain the oil in the blower and refill the reservoirs with ROOTS Synthetic
Oil to maintain optimum performance of your ROOTS blower.